JP3691557B2 - Sterilizer for air flow path - Google Patents

Sterilizer for air flow path Download PDF

Info

Publication number
JP3691557B2
JP3691557B2 JP27775595A JP27775595A JP3691557B2 JP 3691557 B2 JP3691557 B2 JP 3691557B2 JP 27775595 A JP27775595 A JP 27775595A JP 27775595 A JP27775595 A JP 27775595A JP 3691557 B2 JP3691557 B2 JP 3691557B2
Authority
JP
Japan
Prior art keywords
air flow
flow path
sterilizing material
bacteria
mrsa
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP27775595A
Other languages
Japanese (ja)
Other versions
JPH09117496A (en
Inventor
義之 大串
Original Assignee
義之 大串
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 義之 大串 filed Critical 義之 大串
Priority to JP27775595A priority Critical patent/JP3691557B2/en
Publication of JPH09117496A publication Critical patent/JPH09117496A/en
Application granted granted Critical
Publication of JP3691557B2 publication Critical patent/JP3691557B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、院内感染の主たる菌である緑膿菌とMRSA(メチシリン耐性黄色ブドウ球菌)に対して効果的な殺菌作用を有する空気流路用殺菌材に関する。
【0002】
【従来の技術】
上記した院内感染の発生メカニズムとしては、一般に、以下のことが考えられる。
【0003】
▲1▼感染に対して抵抗力の弱っている患者が増加している。
【0004】
▲2▼感染に対して抵抗力を弱めるような治療法や検査法が行われることがある。
【0005】
▲3▼正常な防御機構を阻害するような医療が行われる場合がある。
【0006】
▲4▼化学療法剤、殊に広域抗生物質の濃厚長期使用を行うことがある。
【0007】
▲5▼病室の構造、特に壁面や床面が緑膿菌やMRSAの成育を助長している。
【0008】
▲6▼病院の建物に配設されている通気ダクトを介して、抵抗力のない入院患者のい
る病室まで緑膿菌やMRSAが運ばれている。
【0009】
ところで、上記した院内感染の発生メカニズムにおいて、▲6▼に着目した場合、従来では何ら対策を施していないのが現状である。
【0010】
【発明が解決しようとする課題】
また、▲5▼に着目した場合は、病院の壁材は主としてセメントによるモルタル層やペイントなどの美装材によって形成されており、これは、緑膿菌やMRSAの恰好の育成場所となっている。
【0011】
したがって、緑膿菌やMRSAが通気ダクトなどを介して病院内のいたるところ、例えば、菌に対して抵抗力の弱い入院患者のいる病室などにも運ばれることになる。
【0012】
本発明は、上記課題を解決することのできる空気流路用殺菌材を提供することを目的としている。
【0013】
【課題を解決するための手段】
この発明は、モルタルに、アクリル酸エステル共重合体を主成分とする複合ポリマーエマルジョンとセラミック粉とを混入して生成した殺菌材を、空気流路中に配設するフィルターに担持させて形成したことを特徴とする空気流路用殺菌材に係るものである。
【0016】
【発明の実施の形態】
以下、本発明に係る空気流路用殺菌材の実施形態を図面に基づき説明する。
【0017】
図1に病室Aを示しており、1は空調機であり、同空調機1内部には、吸気口10と排気口11との間に空気流路(図示せず)が形成されている。
【0018】
2は天井に配設した換気装置であり、同換気装置2は、天井内に配設した空気流路となるダクト3に連通連結している。
【0019】
空調機1の空気流路内、及び、換気装置2の排気口21とダクト3との連結部分にはフィルター4を配設している。
【0020】
同フィルター4は、ここではガラス繊維製としているが、エアフィルターとして機能するものであればその素材は何ら限定するものではない。
【0021】
本実施の形態では、上記フィルター4に、後に詳述する殺菌材5を担持させて空気流路用殺菌材を形成し、空気の流通過程において、緑膿菌やMRSAなどの院内感染の主たる菌を殺菌するようにしている。
【0022】
ここで担持とは、塗布、含浸などを指しており、ここでは、フィルター4の繊維素材に上記殺菌材5を含浸させている。
【0023】
殺菌材5は、モルタルに、アクリル酸エステル共重合体を主成分とする複合ポリマーエマルジョンとセラミック粉とを混入して生成したものであり、モルタルとしては、白色セメントまたはポルトランドセメントに、珪砂、鉄粉、亜鉛華、その他を混合したものを用いるのが好ましい。
【0024】
また、複合ポリマーエマルジョンは、固形分として25〜50%含むアクリル酸エステル共重合体水溶液を用いるのが好ましい。
【0025】
また、セラミック粉は、珪砂を焼結した後に粉状としたものが好適に用いられる。
【0026】
さらに、複合ポリマーエマルジョンとセラミック粉を含めたモルタルとの混合比は、1:1〜1:6.5 とするのが好ましい。
【0027】
上記した殺菌材5は、特に、緑膿菌とMRSA(メチシリン耐性黄色ブドウ球菌)にきわめて有効であり、同殺菌材5を使用した場合、所定時間後には緑膿菌が1/10以下に減少し、MRSAに至っては、1/100 以下に減少することが実験的に確かめられている。さらに、その効力は長期にわたって持続することも対候性促進試験により確かめられている。
【0028】
したがって、上記殺菌材5を担持させたフィルター4を空調機1や換気装置2に配設すれば、病院内などの空気を空気流路で循環させる過程において緑膿菌、MRSA等の各種細菌類を効果的に、しかも、長期にわたって滅菌、除菌することが可能となる。
【0029】
特に、抵抗力のない患者の居る病室A内の空気中の緑膿菌やMRSAが、上記フィルター4により除菌されるとなると、近年問題となっている院内感染を効果的に防止することができる。
【0030】
また、参考例として、上記殺菌材5を、空気流路を構成する壁体内面に担持させて空気流路用殺菌材とすることもある。
【0031】
すなわち、ここでは、図1に示したダクト3の内壁面31に、図2に示すように殺菌材5を直接塗布し、同殺菌材5とダクト3内を通過する空気とを接触させることによって殺菌作用をもたせている。
【0032】
また、図3に示すように、例えば、ダクト3の内壁面31に殺菌材5を含浸させた不織布やガラスクロスや織布等の殺菌用貼設材32を貼設してもよい。また、例えば、ダクト3の内壁面31に断熱材を貼設し、同断熱材に殺菌材5を含浸させてもよい。勿論、含浸のみならず、上記殺菌用貼設材32や断熱材に殺菌材5を塗布してもよい。
【0033】
なお、空気流路を形成するものとしては、上記ダクト3に限るものではなく、前記した空調機1や換気装置2内において空気流路を形成する枠体や壁体を含むものであり、また、これら空調機1や換気装置2の他、空気が流通するように区画形成されているものであれば何でもよい。
【0035】
以下、上記してきた殺菌材5の製造方法について説明する。
【0036】
先ず、複合ポリマーエマルジョンとして、以下の配合のものを用いた。
【0037】
(例1)

Figure 0003691557
また、以下の成分構成でも好適に用いることができる。
【0038】
(例2)
Figure 0003691557
また、上記複合ポリマーエマルジョンに混合するモルタルは、セラミック粉を含有した状態で以下の成分構成とした。
【0039】
Figure 0003691557
なお、上記白色セメントの成分重量比は以下の通りとした。
【0040】
Figure 0003691557
なお、この白色セメントに代えて、ポルトランドセメントを用いることもできる。
【0041】
また、上記したセラミック粉としては、以下の組成のものを用いた。このセラミック粉は、廃材としての使用済碍子を磨砕して得たものであり、粒径は74μm 〜149 μm であった。
【0042】
Figure 0003691557
上記した複合ポリマーエマルジョン1に対して、重量比で、モルタルを1.0 〜6.5 の割合で掻き混ぜて殺菌材5を製造する。
【0043】
ここで、上記した殺菌材5の抗菌力測定試験の結果を以下に示す。
【0044】
〔使用菌株〕
▲1▼MRSA(Methicillin resistant Staphylococcus aureus)
▲2▼緑膿菌(Pseudomonas aeruginosa)
〔試験方法〕
1) 試料の準備
殺菌材5を厚さ1mmの膜状に形成し、20mmの正方形に裁断し、オートクレイブで加圧滅菌した。
【0045】
2) 培養試験
ブレインハートインフュージョン寒天培地で24時間培養した菌を滅菌リン酸緩衝食塩液(PBS) に108 個/mlとなるように懸濁した。これを原菌液として10倍段階希釈し、106 個/mlに調整した試験菌懸濁液を試料となる殺菌材5上に接種した後、35℃で18時間、フ卵器内で湿潤静置培養した。
【0046】
培養後、滅菌PBS 20mlに試料を入れ、ストマッカーで30秒間振とうし、試料中の生菌を液中に分散させた。さらに、分散液を原液として10倍段階希釈した後、原液と各段階の希釈液をそれぞれ1mlずつ2枚のシャーレに取り標準寒天培地で混釈平板とし、37℃、48時間培養した。培養後出現した集落数から、生菌数を算出し、菌の減少率から試料の抗菌力を判定した。
減少率(%)=
(初発菌数−18時間後の菌数)/初発菌数×100
3)結果
MRSA50株に対する抗菌力
全株99%以上の減少率で、培養18時間後の菌数は、初発菌数に比べ、1/100 以下に減少した。
緑膿菌50株に対する抗菌力
全株90%以上の減少率で、培養18時間後の菌数は、初発菌数に比べ、1/10以下に減少した。
【0047】
以上説明してきたように、本発明に係る空気流路用殺菌材は、モルタル内に混入した複合ポリマーエマルジョンとセラミック粉の保有する良好な抗菌力によって、MRSA及び緑膿菌等の細菌を著しく減少させることができる。
【0048】
また、ここでは、院内感染の防止を主な目的としているので、MRSA及び緑膿菌に対する有効性を強調したが、実験的には、食中毒の原因菌となるサルモネラ菌に対する優れた殺菌作用も確かめられている。
【0049】
さらに、本発明に係る空気流路用殺菌材は、その他雑菌に対しても有効であり、かかる雑菌を死滅させることができることから、以下のような用途も考えられる。
【0050】
例えば、本空気流路用殺菌材をマスクに適用すれば、インフルエンザの流行時などの予防として有益である。
【0051】
また、雑菌により発生する異臭がなくなるので、かかる消臭作用を利用して自動車のエアコンの空気流路の中途や吹き出し口などに適用すれば、エアコンを作動させたときに時折発生する異臭を消臭して自動車室内の消臭を図ることができる。
【0052】
【発明の効果】
本発明に係る空気流路用殺菌材は、モルタルに、アクリル酸エステル共重合体を主成分とする複合ポリマーエマルジョンとセラミック粉とを混入して生成した殺菌材を、空気流路中に配設するフィルターに担持させて形成している。
【0053】
かかる殺菌材は、モルタル内に混入した複合ポリマーエマルジョンとセラミック粉の保有する良好な抗菌力によって、病院内に存在するMRSA及び緑膿菌等の細菌を空気の流通過程において除去することができるので、院内感染の防止にきわめて有効であり、病室内の空気を殺菌することによって、抵抗力のない入院患者などが院内感染することを効果的に防止できる。
【0054】
また、マスクに適用すれば、インフルエンザの予防などに有益となる。
【0055】
さらに、雑菌を死滅させることにより、かかる雑菌による異臭の発生がないので、この消臭作用を利用して自動車のエアコンなどに適用すれば自動車内の消臭が可能となる。
【図面の簡単な説明】
【図1】本発明に係る空気流路用殺菌材の配設状態を示す説明図である。
【図2】同空気流路用殺菌材の一適用例を示す説明図である。
【図3】同空気流路用殺菌材の一適用例を示す説明図である。
【符号の説明】
A 病室
1 空調機
2 換気装置
3 ダクト
4 フィルター
5 殺菌材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sterilizing material for an air flow path that has an effective sterilizing action against Pseudomonas aeruginosa and MRSA (methicillin-resistant Staphylococcus aureus), which are the main bacteria causing nosocomial infections.
[0002]
[Prior art]
As the occurrence mechanism of the above-mentioned nosocomial infection, generally, the following can be considered.
[0003]
(1) The number of patients with weak resistance to infection is increasing.
[0004]
(2) Treatment and examination methods that weaken resistance to infection may be performed.
[0005]
(3) Medical care that interferes with normal defense mechanisms may be performed.
[0006]
(4) Concentrated long-term use of chemotherapeutic agents, especially broad-spectrum antibiotics.
[0007]
(5) The structure of the room, especially the walls and floors, promotes the growth of Pseudomonas aeruginosa and MRSA.
[0008]
{Circle around (6)} Pseudomonas aeruginosa and MRSA are carried to the hospital room where there is a non-resisting inpatient through a ventilation duct installed in the hospital building.
[0009]
By the way, in the above-mentioned mechanism of nosocomial infection, when attention is paid to (6), no countermeasure has been taken in the past.
[0010]
[Problems to be solved by the invention]
In addition, when paying attention to (5), the hospital wall material is mainly formed by bedding materials such as cement mortar layer and paint, which is a good breeding place for Pseudomonas aeruginosa and MRSA. Yes.
[0011]
Therefore, Pseudomonas aeruginosa and MRSA are transported throughout the hospital via a ventilation duct or the like, for example, to a hospital room where an inpatient with weak resistance to bacteria is present.
[0012]
The object of the present invention is to provide a sterilizing material for an air flow path that can solve the above-mentioned problems.
[0013]
[Means for Solving the Problems]
This invention was formed by supporting a sterilizer produced by mixing a composite polymer emulsion mainly composed of an acrylate copolymer and ceramic powder in a mortar on a filter disposed in an air flow path. The present invention relates to a sterilizing material for an air flow path.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a sterilizing material for air flow according to the present invention will be described with reference to the drawings.
[0017]
FIG. 1 shows a hospital room A, 1 is an air conditioner, and an air flow path (not shown) is formed between the air inlet 10 and the air outlet 11 in the air conditioner 1.
[0018]
Reference numeral 2 denotes a ventilator disposed on the ceiling, and the ventilator 2 is connected to a duct 3 serving as an air flow path disposed in the ceiling.
[0019]
A filter 4 is disposed in the air flow path of the air conditioner 1 and at the connection portion between the exhaust port 21 of the ventilator 2 and the duct 3.
[0020]
The filter 4 is made of glass fiber here, but the material of the filter 4 is not limited as long as it functions as an air filter.
[0021]
In the present embodiment, the filter 4 is loaded with a sterilizing material 5 which will be described in detail later to form a sterilizing material for an air flow path, and in the air circulation process, the main bacteria causing nosocomial infections such as Pseudomonas aeruginosa and MRSA. To sterilize.
[0022]
Here, “support” refers to application, impregnation, and the like. Here, the fiber material of the filter 4 is impregnated with the sterilizing material 5.
[0023]
The disinfectant 5 is formed by mixing a mortar with a composite polymer emulsion mainly composed of an acrylate copolymer and ceramic powder. As the mortar, white cement or Portland cement, quartz sand, iron It is preferable to use a mixture of powder, zinc white and others.
[0024]
The composite polymer emulsion is preferably an aqueous acrylate copolymer solution containing 25 to 50% as a solid content.
[0025]
The ceramic powder is preferably used in the form of powder after sintering quartz sand.
[0026]
Furthermore, the mixing ratio of the composite polymer emulsion and the mortar including the ceramic powder is preferably 1: 1 to 1: 6.5.
[0027]
The sterilizing material 5 described above is particularly effective against Pseudomonas aeruginosa and MRSA (methicillin-resistant Staphylococcus aureus). When the sterilizing material 5 is used, Pseudomonas aeruginosa is reduced to 1/10 or less after a predetermined time. However, it has been experimentally confirmed that MRSA decreases to 1/100 or less. Furthermore, it has been confirmed by the weather resistance promotion test that the efficacy lasts for a long time.
[0028]
Therefore, if the filter 4 carrying the sterilizing material 5 is disposed in the air conditioner 1 or the ventilator 2, various bacteria such as Pseudomonas aeruginosa and MRSA in the process of circulating air in the hospital or the like through the air flow path. Can be effectively sterilized and sterilized over a long period of time.
[0029]
In particular, when Pseudomonas aeruginosa and MRSA in the air in the hospital room A where there is a non-resistant patient is sterilized by the filter 4, it is possible to effectively prevent nosocomial infections that have recently become a problem. it can.
[0030]
As a reference example, the sterilizing material 5 may be carried on the inner surface of the wall constituting the air flow path to form a sterilizing material for the air flow path.
[0031]
That is, here, the sterilizing material 5 is directly applied to the inner wall surface 31 of the duct 3 shown in FIG. 1 as shown in FIG. 2, and the sterilizing material 5 and the air passing through the duct 3 are brought into contact with each other. Has a bactericidal action.
[0032]
As shown in FIG. 3, for example, a pasteurizing material 32 such as a nonwoven fabric, glass cloth, or woven fabric in which the inner wall 31 of the duct 3 is impregnated with the germicide 5 may be pasted. Further, for example, a heat insulating material may be attached to the inner wall surface 31 of the duct 3 and the heat insulating material may be impregnated with the sterilizing material 5. Of course, the sterilizing material 5 may be applied not only to the impregnation but also to the sterilizing paste 32 and the heat insulating material.
[0033]
In addition, as what forms an air flow path, it is not restricted to the said duct 3, It includes the frame and wall which form an air flow path in the above-mentioned air conditioner 1 or the ventilator 2, and In addition to the air conditioner 1 and the ventilator 2, anything may be used as long as it is partitioned so that air flows.
[0035]
Hereinafter, the manufacturing method of the sterilizing material 5 described above will be described.
[0036]
First, a composite polymer emulsion having the following composition was used.
[0037]
(Example 1)
Figure 0003691557
Also, the following component constitution can be suitably used.
[0038]
(Example 2)
Figure 0003691557
Moreover, the mortar mixed with the said composite polymer emulsion was set as the following component structures in the state containing the ceramic powder.
[0039]
Figure 0003691557
In addition, the component weight ratio of the said white cement was as follows.
[0040]
Figure 0003691557
In place of this white cement, Portland cement can also be used.
[0041]
Moreover, as the above-mentioned ceramic powder, one having the following composition was used. This ceramic powder was obtained by grinding used insulators as waste materials, and the particle size was 74 μm to 149 μm.
[0042]
Figure 0003691557
The sterilizing material 5 is manufactured by stirring the mortar at a weight ratio of 1.0 to 6.5 with respect to the composite polymer emulsion 1 described above.
[0043]
Here, the result of the antibacterial activity measurement test of the sterilizing material 5 described above is shown below.
[0044]
[Used strain]
(1) MRSA (Methicillin resistant Staphylococcus aureus)
(2) Pseudomonas aeruginosa
〔Test method〕
1) Preparation of sample The sterilizing material 5 was formed into a 1 mm thick film, cut into a 20 mm square, and autoclaved in an autoclave.
[0045]
2) Culture test Bacteria cultured for 24 hours on brain heart infusion agar medium were suspended in sterile phosphate buffered saline (PBS) at 10 8 cells / ml. This was diluted 10 times as a stock solution and inoculated on the sample sterilizer 5 with a test bacterial suspension adjusted to 10 6 cells / ml, and then wetted in an incubator at 35 ° C for 18 hours. The culture was stationary.
[0046]
After culturing, the sample was placed in 20 ml of sterile PBS and shaken with a stomacher for 30 seconds to disperse the viable bacteria in the sample. Furthermore, after 10-fold serial dilution using the dispersion as a stock solution, 1 ml each of the stock solution and each stage of the diluted solution was taken in two petri dishes and made into a pouch plate with a standard agar medium, and cultured at 37 ° C. for 48 hours. The number of viable bacteria was calculated from the number of settlements that appeared after the culture, and the antibacterial activity of the sample was determined from the rate of bacterial reduction.
Reduction rate (%) =
(Initial number of bacteria-Number of bacteria after 18 hours) / Initial number of bacteria x 100
3) Results The antibacterial activity against MRSA50 strain was reduced by 99% or more, and the number of bacteria after 18 hours of culture decreased to 1/100 or less compared to the number of initial bacteria.
Antimicrobial activity against 50 strains of Pseudomonas aeruginosa was reduced by 90% or more, and the number of bacteria after 18 hours of culture decreased to 1/10 or less compared to the number of initial bacteria.
[0047]
As described above, the sterilizing material for air flow according to the present invention significantly reduces bacteria such as MRSA and Pseudomonas aeruginosa by the good antibacterial activity possessed by the composite polymer emulsion and ceramic powder mixed in the mortar. Can be made.
[0048]
In addition, since the main purpose here is to prevent nosocomial infections, the effectiveness against MRSA and Pseudomonas aeruginosa has been emphasized, but experimentally, an excellent bactericidal action against Salmonella, which is a causative agent of food poisoning, has been confirmed. ing.
[0049]
Furthermore, the sterilizing material for air flow paths according to the present invention is effective against other germs and can kill such germs, so the following uses are also conceivable.
[0050]
For example, if this air flow path disinfectant is applied to a mask, it is beneficial for prevention during influenza epidemics.
[0051]
Also, since the off-flavor generated by various germs is eliminated, if this deodorizing action is applied to the middle of the air flow path or outlet of an automobile air conditioner, the off-flavor that occasionally occurs when the air conditioner is operated can be eliminated. Odor can be deodorized in the car interior.
[0052]
【The invention's effect】
The sterilizing material for an air flow path according to the present invention includes a sterilizing material produced by mixing a composite polymer emulsion mainly composed of an acrylate ester copolymer and ceramic powder in a mortar. It is formed by supporting it on a filter.
[0053]
Such a disinfectant can remove bacteria such as MRSA and Pseudomonas aeruginosa present in hospitals by the good antibacterial power possessed by the composite polymer emulsion and ceramic powder mixed in the mortar in the air circulation process. It is extremely effective in preventing nosocomial infection, and by sterilizing the air in the hospital room, it is possible to effectively prevent nosocomial inpatients from being hospitalized.
[0054]
Moreover, if it is applied to a mask, it is useful for preventing influenza.
[0055]
Furthermore, by eliminating various germs, there is no generation of a strange odor due to such germs. Therefore, if this deodorizing action is applied to an automobile air conditioner or the like, the interior can be deodorized.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing an arrangement state of air flow disinfectants according to the present invention.
FIG. 2 is an explanatory view showing an application example of the air flow path sterilizing material.
FIG. 3 is an explanatory view showing an application example of the air flow path disinfectant.
[Explanation of symbols]
A Hospital room 1 Air conditioner 2 Ventilator 3 Duct 4 Filter 5 Disinfectant

Claims (1)

モルタルに、アクリル酸エステル共重合体を主成分とする複合ポリマーエマルジョンとセラミック粉とを混入して生成した殺菌材を、空気流路中に配設するフィルターに担持させて形成したことを特徴とする空気流路用殺菌材。A sterilizing material produced by mixing mortar with a composite polymer emulsion mainly composed of an acrylate copolymer and ceramic powder is formed by carrying it on a filter disposed in an air flow path. Sterilizer for air flow path.
JP27775595A 1995-10-25 1995-10-25 Sterilizer for air flow path Expired - Fee Related JP3691557B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27775595A JP3691557B2 (en) 1995-10-25 1995-10-25 Sterilizer for air flow path

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27775595A JP3691557B2 (en) 1995-10-25 1995-10-25 Sterilizer for air flow path

Publications (2)

Publication Number Publication Date
JPH09117496A JPH09117496A (en) 1997-05-06
JP3691557B2 true JP3691557B2 (en) 2005-09-07

Family

ID=17587888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27775595A Expired - Fee Related JP3691557B2 (en) 1995-10-25 1995-10-25 Sterilizer for air flow path

Country Status (1)

Country Link
JP (1) JP3691557B2 (en)

Also Published As

Publication number Publication date
JPH09117496A (en) 1997-05-06

Similar Documents

Publication Publication Date Title
JP4999847B2 (en) Antimicrobial treatment of nonwoven materials for infection prevention
Borkow et al. Copper oxide impregnated wound dressing: biocidal and safety studies
Sripriya et al. Improved collagen bilayer dressing for the controlled release of drugs
WO2014133149A1 (en) Process for producing silver-ion antibacterial liquid, silver-ion antibacterial liquid produced by said process, and silver-ion-containing product containing said antibacterial liquid
US20080254080A1 (en) Novel Uses of Calcium Hydroxide
JP2022500361A (en) Anti-pathogenic compositions and methods thereof
JP2009506128A (en) Antimicrobial composition
JP2009505804A (en) Antimicrobial composition
JP2001508041A (en) Contact killing / non-leaching antibacterial material
KR20110112274A (en) A multi-effect antimicrobial surface coating forming material and its preparation
CA2014114A1 (en) Polymeric broad-spectrum antimicrobial materials
JP3691557B2 (en) Sterilizer for air flow path
CN107754004A (en) A kind of adhesive bandage and its preparation and application
CN102505239A (en) Fiber capable of repelling mosquitoes and flies
Gniadek et al. Air-conditioning vs. presence of pathogenic fungi in hospital operating theatre environment
Bahtiyari et al. Antimicrobial textiles for the healthcare system
ZA200704110B (en) Novel uses of calcium hydroxide
Chen et al. The role of nanotechnology-based approaches for clinical infectious diseases and public health
Hiruma et al. Efficacy of bioshell calcium oxide water as disinfectants to enable face mask reuse
JPH06321722A (en) Antimicrobial sheet and calendar using the same sheet
CN111248223A (en) Nano disinfectant and preparation method thereof
CN113089326B (en) Protective clothing capable of efficiently killing bacteria and fungi
CN115504716B (en) Sterilization, antivirus and stain-resistant plastering mortar and preparation method thereof
JPH10192378A (en) Sterilizing device
KR200374915Y1 (en) Nano silver contain one time cauze band

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20041101

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050215

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20050418

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050517

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050616

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R371 Transfer withdrawn

Free format text: JAPANESE INTERMEDIATE CODE: R371

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R370 Written measure of declining of transfer procedure

Free format text: JAPANESE INTERMEDIATE CODE: R370

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080624

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090624

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090624

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100624

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110624

Year of fee payment: 6

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110624

Year of fee payment: 6

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees