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KR101528110B1 - portable type interception tool of virus - Google Patents

portable type interception tool of virus Download PDF

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Publication number
KR101528110B1
KR101528110B1 KR1020140146452A KR20140146452A KR101528110B1 KR 101528110 B1 KR101528110 B1 KR 101528110B1 KR 1020140146452 A KR1020140146452 A KR 1020140146452A KR 20140146452 A KR20140146452 A KR 20140146452A KR 101528110 B1 KR101528110 B1 KR 101528110B1
Authority
KR
South Korea
Prior art keywords
virus
lower side
user
chlorine dioxide
portable
Prior art date
Application number
KR1020140146452A
Other languages
Korean (ko)
Inventor
황만수
Original Assignee
황만수
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 황만수 filed Critical 황만수
Priority to KR1020140146452A priority Critical patent/KR101528110B1/en
Application granted granted Critical
Publication of KR101528110B1 publication Critical patent/KR101528110B1/en

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K33/00Medicinal preparations containing inorganic active ingredients
    • A61K33/20Elemental chlorine; Inorganic compounds releasing chlorine
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/01Deodorant compositions
    • A61L9/012Deodorant compositions characterised by being in a special form, e.g. gels, emulsions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/015Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00Disinfection, sterilisation or deodorisation of air
    • A61L9/015Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
    • A61L9/04Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
    • A61L9/12Apparatus, e.g. holders, therefor
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10Apparatus features
    • A61L2209/13Dispensing or storing means for active compounds
    • A61L2209/133Replaceable cartridges, refills
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/20Method-related aspects
    • A61L2209/21Use of chemical compounds for treating air or the like

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Dispersion Chemistry (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

Disclosed is a portable virus interception tool, which comprises a body (10) formed in a plate shape and having a hanging hole (12) penetrated on an upper part; and a virus interception body (20) having an accommodation portion (21) positioned at an lower side of a front surface (11) of the body (10), a virus interception powder (23) accommodated inside the accommodation portion (21) and including chlorine dioxide (22), and micro holes (24) formed in a through hole shape on a lower side of the accommodation portion (21) and discharging chlorine dioxide (22) included in the virus interception powder (23). Since the portable virus interception tool of the present invention includes the virus interception body inputted with virus interception powder having chlorine dioxide at the lower side of a front surface of the body formed in a plate shape, the tool can be put on a neck of a user by simply using a necklace or hung on a pocket of clothes of the user by using a gripper, or hung on the clothes, a bag or a cap of the user by using an elastic clip, thereby previously preventing the virus from being approached to the user during a daily life.

Description

Portable type interception tool of virus < RTI ID = 0.0 >

The present invention relates to a portable virus barrier, and more particularly, to a portable virus barrier, which comprises a blocking agent provided with a barrier powder containing chlorine dioxide, which is easily hung on a neck or attached to a pocket of a garment, And the like, as well as the effect of sterilization, disinfection and deodorization.

Generally, in the air, there are various kinds of germs. In daily life, bacteria in the air are inhaled as they are without filtration and have a very bad influence on the health of children and elderly people.

For example, in the case of a cold, it is caused by respiratory system diseases such as nose and throat organs, caused by irritation such as viruses, bacteria or dust, unbalanced body temperature distribution, allergic causes, and the like.

In particular, rhinovirus or coronavirus in the air, which is distributed in the air, is the main virus that causes colds. It is usually distributed in the air by sneezing or coughing, It inflows to others and causes a cold.

Accordingly, various techniques for blocking viruses and germs from being inhaled into the human body have been developed.

For example, airborne bacteria and drug-resistant bacteria sterilization apparatuses have been proposed in the registration practice 20-0317757, which includes a section for sucking in air, a pre-filter for filtering the sucked air installed in the section, A static electricity generating film is provided on one side of the first chamber for raising the electric potential of the air while rubbing against the sucked air while generating static electricity so that the air having a raised potential through the static electricity generating film moves, A pressure chamber for generating copper ions from the inside of the cell by applying pressure to the cell protective layer of the living bacteria; and a UV lamp installed in the pressure chamber for generating ultraviolet rays. The photocatalyst ceramic is provided at the lower end of the UV lamp to react the photocatalytic titanium oxide Filter air and a pressure valve for increasing the density of the positive ions A third chamber provided at one side of the second chamber and provided with a reducing ceramic for reducing the air oxidized by the reaction of the previous process and discharging the air again to the outside, A connecting head installed on the lower side of the first chamber to the third chamber for adjusting the level of the water level sensor, a connecting head for balancing the water level of the water level sensor and the water level, and an inlet heater for increasing the temperature of the water to increase the sterilizing effect And a water tank included therein.

Such prior art is expected to have an effect of sterilizing drug resistant bacteria such as Legionella, Staphylococcus aureus, Enterococcus, Escherichia coli, Pseudomonas aeruginosa, and airborne airborne bacteria.

However, in the case of the related art, there is a problem in that the space is limited because the configuration is too many and complicated and it is difficult for a person to easily carry around and must be provided in one indoor space.

Further, since the prior art is designed to sterilize bacteria by means of an ultraviolet lamp, a ceramic filter, a static electricity generating film, and the like, the structure is not only complicated, but also increases the production cost and increases the purchase cost of consumers. .

Accordingly, there is a desperate need for a technique that is easy to carry, can be worn by a person at any time, and is capable of preventing the virus from being inhaled into the human body by blocking the virus in the air.

Korea Registered Practitioner 20-0317757 (Registered on June 13, 2003) Korean Patent Publication No. 10-2005-0068053 (published on May 5, 2005)

The present invention provides a shielding agent on the front surface of a plate-shaped body and allows the body to be carried around the user's clothing or neck so as to be portable, thereby blocking the proximity of various viruses distributed in the air in daily life And it is an object of the present invention to provide a portable virus blocking member which can prevent exposure to a pathogenic disease caused by inhalation of a virus according to a zoom.

In order to achieve the above object, a portable virus blocker according to the present invention comprises a body having a plate-like shape and having a hook hole penetrating thereon, a receiving part, a receiving part, and a receiving part housed in the receiving part and containing chlorine dioxide Wherein the receiving portion of the virus carriage is located on the lower front side of the body and the receiving portion of the virus carriage is located on the lower front side of the body, And a male Velcro tape attached to an arm velcro tape attached to a lower front side of the body, wherein the receiving portion is attached to the lower side of the front side of the body by detachment of the arm velcro tape and the male Velcro tape, Wherein the receiving portion is formed so that the receiving portion is separated from the lower side, The body cavity is provided with micropores for releasing chlorine dioxide contained in the body shield powder and the hook hole of the body is inserted into the clothes pocket, And an elastic clip for hanging on the same wearing article.

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The present invention is characterized in that a body of virus is provided with a virus shielding powder containing chlorine dioxide on the lower part of the front face of the plate body so that the body is easily hooked to the user's neck using a neck strap, It is possible to prevent the virus from approaching during the daily life of the user because the user can hang it on the clothes pocket of the user or use the elastic clip to hang it on the user's clothing or the bag or the cap. The purchase cost of viruses can be minimized and the viruses can be detached from the body, so that only the viruses can be replaced and reused, thereby greatly improving usability and convenience.

1 is a perspective view showing a portable virus blocking mouth according to the present invention.
2 is a block diagram showing a configuration of a portable virus-blocking mouth according to the present invention.
3 is a block diagram showing another embodiment of the portable virus blocking mouth according to the present invention.
FIG. 4 is a block diagram showing still another embodiment of the portable virus blocking mouth of the present invention. FIG.
FIG. 5 is an enlarged view of the constituent parts of a portable virus blocking mouth according to the present invention.
6 is an enlarged configuration view of another embodiment of the constituent parts of the portable virus blocking mouth of the present invention.
FIG. 7 is an enlarged view of another embodiment of the constituent parts of the portable virus blocking mouth of the present invention. FIG.
FIG. 8 is a partially exploded perspective view showing still another embodiment of the constituent parts of the portable virus barrier of the present invention. FIG.

Hereinafter, other objects and features of the present invention will be apparent from the following description of embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, a portable virus blocking port according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

As shown in the figure, the portable viral device according to the present invention comprises a body 10 having a plate shape and having a hook hole 12 penetrating thereon, and a receiving portion 21 located at a lower side of the front face 11 of the body 10 And a virus blocking powder 23 contained in the receiving part 21 and containing chlorine dioxide 22 and a virus blocking powder 23 penetrating through the bottom part of the receiving part 21, (20) having fine holes (24) through which chlorine dioxide (22) contained in the chlorine dioxide (23) is discharged.

The method for containing the chlorine dioxide 22 in the virus-blocking powder 23 comprises diluting the chlorine dioxide with air using a gas generator, immediately supplying the diluted chlorine dioxide to the screw conveyor type agitator, (23) containing the virus-blocking agent (23).

As is well known, chlorine dioxide has been designated as a disinfectant and disinfectant in the standards and specifications of water treatment agents notified by the Ministry of Environment. It is being used as a disinfectant for water to be consumed. There is no halogen element-containing organic compound and no halogen element- Are also known to be nonexistent.

In addition, studies by Purdue University in the US have shown that it is highly effective at removing harmful bacteria from fruits and vegetables and has an efficacy of reducing anthrax, rustella, coli, and salmonella by at least a factor of 100,000 .

division Chlorine dioxide Chlorine (sodium hypochlorite, etc.) Reactivity
(pH sterilization power)
Maintain sterilization power within a wide pH range (2-10) Sterilization abruptly decreases with increasing pH
Hypochlorous acid dissociates to hypochlorite ion depending on pH
Selectivity Chlorine dioxide rarely reacts with organics and produces no by-products. Chlorine reacts with almost all the compounds, resulting in oxidation, substitution, and addition reactions. Persistence of disinfection It has the effect of suppressing reproductive growth of bacteria and so on and removing the bacteria membrane by strong microorganism permeability of membrane. Bacteria reproduce a lot. Disinfection byproduct Fewer disinfection byproducts More than 600 kinds of carcinogenic disinfection by-products such as trialopenic (THMs), haloacetic acid (HAAs), and haloacetonitrile (HANs) Ability to remove protists and heavy metals Microbial control ability is 5 times stronger than chlorine, decomposes pesticide residues in food, removes iron, manganese, phenol and toxic substances Minimal activation of raw flora and removal of heavy metals It also causes odor when chlorine disinfectant is used in phenol

* Green environment blog excerpt

(http://blog.naver.com/PostView.nhn?blogId=ogreene&logNo=140175587920)

As the chlorine dioxide having such an effect is contained in the virus powder 23 of the virus carrier 20, various viruses distributed in the user's surrounding air can be blocked by the virus carrier 20 So that the user can prevent the virus from being inhaled through the respiratory tract.

The chlorine dioxide 22 is discharged through the fine holes 24 that are made in the lower side of the accommodating portion 21. The number of the fine holes 24 is not limited.

In addition, as shown in the figure, ten pieces of the virus body 20 are formed under the front face 11 of the body 10, but the number of the virus body 20 is not limited.

The virus body 20 may be provided on the entire front side 11 of the body 10 or on the rear side of the body 10 as well as on the front side 11 of the body 10, Of course it is.

According to the present invention as described above, when a user wears the body (10) by hanging on his or her clothes or neck, various viruses distributed in the air in the user's daily life are blocked in advance, And the body 10 can be easily attached to or attached to a part of the user's body or clothes, so that usability and portability are easy.

The hook hole 12 of the body 10 may further include a necklace string 30 for allowing the body 10 to be hooked on the user's neck.

Since the necklace strap 30 is further provided, the user can carry the body 10 on his neck using the necklace strap 30 hooked on the hook hole 12, It is possible to obtain a virus-blocking effect by the virus-free body 20 provided on the front face 11 of the body 10 which is hooked on the neck of the user.

In addition, the hook hole 12 of the body 10 may further include a tongue 40 for hooking the body 10 to a user's garment bag.

Since the user is further provided with the tongs 40 as described above, the user can carry the body 10 by holding the body 10 in the pocket of the clothes he wears by using the tongs 40 fixed to the hook holes 12 , A virus blocking effect by the virus discs 20 provided on the front face 11 of the body 10 that is hooked to the clothes pocket of the user can be obtained.

In addition, the hook 10 of the body 10 may further include an elastic clip 50 for hooking the body 10 to a user's garment bag, a hat or a bag.

Since the elastic clip 50 is further provided, the user can use the elastic clip 50 fixed to the hook hole 12 to carry the body 10 to the user's garment, bag, And a virus blocking effect by the virus carrier 20 provided on the front surface 11 of the body 10, which is hooked to the user's clothes, bag, hat or the like, can be obtained.

As described above, according to the present invention, the user can conveniently hang or attach the clothes or the article to be worn by the user by various hanger means, thereby greatly improving the portability and convenience, and the virus that can be brought close to the user's body during daily life It is possible to prevent the pathogenic disease caused by the inhalation of the virus through the respiratory system of the user.

The receiving portion 21 of the present invention may be made of a transparent vinyl material and may be welded and fixed to the lower side of the front surface 11 of the body 10 by a weld portion 61 formed by high frequency welding.

As the receiving portion 21 is fixed by the bonded portion 61 as described above, when the user hangs the body 10 on the neck or hangs on or attaches to the clothes, 10 from falling off.

The receiving portion 21 may be made of a nonwoven fabric and sewed and fixed by a sewing portion 62 formed by a sewing operation to a lower front side of the body 10. [

When the receiving part 21 is sewn and fixed to the front surface 11 of the body 10 by the sewing part 62 as well as the body 10 is hooked on the neck, It is possible not only to prevent the receiving portion 21 from falling off the body 10 but also to prevent dislocation of the virus contained in the virus blocking powder 23 contained in the receiving portion 21 by the receiving portion 21 made of non- The release of the chlorine 22 can be made more easily through the fine holes that the nonwoven fabric itself has.

The arm 10 is provided with an arm velcro tape 63 on the lower side of the front face 11 of the body 10. The receiving portion 21 is attached to the lower side of the front face 11 of the body 10 And a male Velcro tape 64 attached to the arm velcro tape 63 provided thereon.

Since the arm velcro tape 63 and the male Velcro tape 64 are further provided on the front surface 11 of the body 10 and the accommodating portion 21 of the virus body 20 as described above, The receiving portion 21 is attached to the lower side of the front surface 11 of the body 10 by attaching or detaching the elastic body 63 and the male Velcro tape 64 or by attaching the receiving portion 21 from the lower side of the front surface 11 of the body 10 The receiving portion 21 can be detached.

Thus, when the chlorine dioxide 22 contained in the virus blocking powder 23 contained in the receiving portion 21 of the virus carrier 20 is completely discharged, only the receiving portion 21 is replaced with a new one, It can be reused by re-adhering to the base 10, and economical effect can be added.

In addition, the granular absorbent 70 for absorbing the moisture of the surrounding air may be further contained in the accommodating portion 21 of the present invention.

The granular absorbent 70 absorbs moisture around the granular absorbent 70, such as silica gel. Since the granular absorbent 70 is further provided, blocking of the virus contained in the moisture in the air can be prevented Of course, it removes odors in the air.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention

10: Body 11: Body front
12: Hook hole 20: Virus car group
21: receptacle 22: chlorine dioxide
23: virus blocking powder 24: fine holes
30: Necklace string 40: Tongs
50: elastic clip 61: welded part
62: sewing section 63: arm velcro tape
64: Number Velcro tape 70: Absorbent

Claims (8)

(10) having a plate-like shape and through which a hook hole (12) is passed, a body (10) accommodated in the accommodation portion (21) and containing the chlorine dioxide (22) (20) having a virus blocking powder (23)
An arm bell tape 63 is further attached to the lower side of the front surface 11 of the body 10,
The receiving portion 21 of the virus disc holder 20 is provided with an arm velcro tape which is located on the lower side of the front face 11 of the body 10 and is attached to the lower side of the front face 11 of the body 10, And a number of Velcro tapes (64) adhered to the upper surface (63)
The receiving portion 21 is attached to the lower side of the front surface 11 of the body 10 by attaching and detaching the arm velcro tape 63 and the male Velcro tape 64 or the front surface 11 of the body 10 The receiving portion 21 is separated from the lower side,
Further comprising fine holes (24) formed in the lower part of the receiving part (21) to discharge the chlorine dioxide (22) contained in the virus blocking powder (23)
In the hook hole (12) of the body (10)
And an elastic clip 50 for hanging the body 10 on an item to be worn such as a clothes pocket or a hat or a bag so that the portable body can be easily carried by the user. A portable virus blocker.
delete delete delete delete delete delete The method according to claim 1,
And a granular absorbent (70) for absorbing moisture of the surrounding air is further inserted into the accommodating portion (21).
KR1020140146452A 2014-10-27 2014-10-27 portable type interception tool of virus KR101528110B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140146452A KR101528110B1 (en) 2014-10-27 2014-10-27 portable type interception tool of virus

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Application Number Priority Date Filing Date Title
KR1020140146452A KR101528110B1 (en) 2014-10-27 2014-10-27 portable type interception tool of virus

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Publication Number Publication Date
KR101528110B1 true KR101528110B1 (en) 2015-06-11

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170000559U (en) * 2015-08-03 2017-02-13 황만수 interception tool of virus
KR20170002805U (en) 2016-01-28 2017-08-07 황만수 band type interception tool of virus
KR20170002804U (en) 2016-01-28 2017-08-07 황만수 sticker type interception tool of virus
KR20220157203A (en) 2021-05-20 2022-11-29 서해식 Protecing screen for contacting with patient

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012245434A (en) * 2011-05-25 2012-12-13 Amatera:Kk Chlorine dioxide gas generator pack, and manufacturing method and preservation method thereof
KR20130021218A (en) * 2011-08-22 2013-03-05 김향미 Disposable detachable perfume
JP3184180U (en) * 2013-04-05 2013-06-13 株式会社 プライス Air purification tool
JP3186240U (en) * 2013-07-12 2013-09-26 株式会社グローバル プロダクト プランニング Chlorine dioxide gas sustained release device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012245434A (en) * 2011-05-25 2012-12-13 Amatera:Kk Chlorine dioxide gas generator pack, and manufacturing method and preservation method thereof
KR20130021218A (en) * 2011-08-22 2013-03-05 김향미 Disposable detachable perfume
JP3184180U (en) * 2013-04-05 2013-06-13 株式会社 プライス Air purification tool
JP3186240U (en) * 2013-07-12 2013-09-26 株式会社グローバル プロダクト プランニング Chlorine dioxide gas sustained release device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170000559U (en) * 2015-08-03 2017-02-13 황만수 interception tool of virus
KR200484164Y1 (en) 2015-08-03 2017-08-08 황만수 interception tool of virus
KR20170002805U (en) 2016-01-28 2017-08-07 황만수 band type interception tool of virus
KR20170002804U (en) 2016-01-28 2017-08-07 황만수 sticker type interception tool of virus
KR200484371Y1 (en) 2016-01-28 2017-08-30 황만수 band type interception tool of virus
KR20220157203A (en) 2021-05-20 2022-11-29 서해식 Protecing screen for contacting with patient

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