JPH0212129B2 - - Google Patents
Info
- Publication number
- JPH0212129B2 JPH0212129B2 JP59075509A JP7550984A JPH0212129B2 JP H0212129 B2 JPH0212129 B2 JP H0212129B2 JP 59075509 A JP59075509 A JP 59075509A JP 7550984 A JP7550984 A JP 7550984A JP H0212129 B2 JPH0212129 B2 JP H0212129B2
- Authority
- JP
- Japan
- Prior art keywords
- ozone
- filter
- metal
- ozone decomposition
- metal alloy
- 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 - Lifetime
Links
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 51
- 238000000354 decomposition reaction Methods 0.000 claims description 16
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 9
- 229910001369 Brass Inorganic materials 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 239000010951 brass Substances 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 18
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 239000003054 catalyst Substances 0.000 description 6
- 229910044991 metal oxide Inorganic materials 0.000 description 6
- 150000004706 metal oxides Chemical class 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- OWXLRKWPEIAGAT-UHFFFAOYSA-N [Mg].[Cu] Chemical group [Mg].[Cu] OWXLRKWPEIAGAT-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical group [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005183 environmental health Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002973 irritant agent Substances 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明はオゾン分解フイルター、特に、オゾン
を長期間にわたつて効果的に分解除去しうるフイ
ルターに関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an ozone decomposition filter, and particularly to a filter that can effectively decompose and remove ozone over a long period of time.
（従来技術）
オゾンは刺激性の有毒ガスであり、これが大気
中に発生することは環境衛生上も好ましいことで
はない。このオゾンは、高電圧のかかる電気製品
からのコロナ放電により、あるいは、紫外線、Ｘ
線、陰極線などの放射線が酸素分子に反応して発
生する。静電複写機では、その複写プロセスの中
で行われるコロナ放電によつて空気中の酸素分子
から多量のオゾンが生成され、これが複写機内に
設けられた排気部等から機外へ排出されて、複写
機の置かれている室内の空気を汚染する。したが
つてこの静電複写機のようなオゾン発生源となる
機器や装置類には、その中で生成されるオゾンを
できるだけもとの酸素分子に分解させるフイルタ
ーなどが設けられねばならない。オゾンを分解除
去するフイルターとしては、活性炭を主体とする
もの、多孔体表面に酸化金属触媒をコーテイング
したもの、あるいは還元性物質を主体とするもの
が知られている。例えば、独国特許公開公報第
3217299号には、活性炭繊維を粉砕しこれに澱粉
を加えスラリーにしてのち加熱・冷却し、それを
発泡ウレタンに浸漬し、乾燥して得られる50wt
％の活性炭を含むフイルターが開示されている。
特開昭57−50527号公報や特開昭54−59364号公報
には、活性炭表面にマンガン酸化物と銅酸化物と
をコーテイングさせたり、あるいは金属キレート
化合物をコーテイングさせて得られるフイルター
が開示されている。特開昭57−30533号公報は、
銅酸化物を担持させた活性炭を多数のハニカム状
孔を設けたアルミナ板に付着させたフイルター
が、そして米国特許明細書第4200607号には耐
熱・軽量の多孔のフイルムにMnO2、CeO2およ
びCr2O3をコーテイングしたフイルターが開示さ
れている。また、特開昭56−115622号公報、米国
特許明細書第4261963号、米国特許明細書第
4184983号などは、アルミナ触媒床に銀をコーテ
イングしたフイルター、ZnO2にMnO2をコーテ
イングしたフイルター、無機担体に第８属の金属
や金属酸化物をコーテイングしたフイルターを開
示している。さらに独国特許公開公報第3029948
号はオゾン分解に白金を用いることを提案してい
る。(Prior Art) Ozone is an irritating and toxic gas, and its generation in the atmosphere is not desirable from the standpoint of environmental health. This ozone is produced by corona discharge from high-voltage electrical products, ultraviolet rays,
Radiation such as rays and cathode rays is generated by reacting with oxygen molecules. In an electrostatic copying machine, a large amount of ozone is generated from oxygen molecules in the air due to corona discharge during the copying process, and this is exhausted outside the machine from an exhaust port installed inside the copying machine. It pollutes the air in the room where the copy machine is located. Therefore, equipment and devices that generate ozone, such as electrostatic copying machines, must be equipped with a filter or the like to decompose the ozone generated therein into its original oxygen molecules as much as possible. As filters for decomposing and removing ozone, there are known filters based on activated carbon, filters coated with a metal oxide catalyst on the surface of a porous body, and filters based on reducing substances. For example, German Patent Application No.
No. 3217299 describes a 50wt product obtained by crushing activated carbon fibers, adding starch to the slurry, heating and cooling it, immersing it in urethane foam, and drying it.
% activated carbon is disclosed.
JP-A-57-50527 and JP-A-54-59364 disclose filters obtained by coating the surface of activated carbon with manganese oxide and copper oxide, or by coating the surface with a metal chelate compound. ing. Japanese Patent Application Laid-Open No. 57-30533 is
In US Pat. No. 4,200,607, a heat-resistant and lightweight porous film is coated with MnO 2 , CeO 2 and A filter coated with Cr 2 O 3 is disclosed. Also, Japanese Patent Application Laid-Open No. 115622/1983, US Patent Specification No. 4261963, US Patent Specification No.
No. 4184983 discloses a filter in which an alumina catalyst bed is coated with silver, a filter in which ZnO 2 is coated with MnO 2 , and a filter in which an inorganic carrier is coated with a Group 8 metal or metal oxide. Additionally, German Patent Publication No. 3029948
issue proposes the use of platinum for ozone decomposition.
上記オゾン分解フイルターのうち、活性炭や活
性炭繊維は、その活性表面が空気中の塵あいの吸
着や機械油の飛散による吸着などが原因で、比較
的短期間に失われ易いという欠点を有する。しか
も、オゾンとの反応の結果、それ自身の温度が上
昇して吸着能が低下するというオゾン分解触媒と
しての致命的な欠点を有する。 Among the ozone decomposition filters, activated carbon and activated carbon fibers have the disadvantage that their active surfaces tend to be lost in a relatively short period of time due to adsorption of dust particles in the air or adsorption due to scattering of machine oil. Furthermore, as a result of the reaction with ozone, its own temperature rises and its adsorption capacity decreases, which is a fatal drawback as an ozone decomposition catalyst.
多孔体に酸化金属触媒をコーテイングした上記
オゾン分解フイルターにおいては、そのコーテイ
ング処理が技術的に複雑である。しかも多孔体の
通気抵抗が大きいため、多孔体表面にたとえ理想
的に酸化金属触媒をコーテイングし得たとしても
その内面はほとんど利用され得ない。 In the above ozone decomposition filter in which a porous body is coated with a metal oxide catalyst, the coating process is technically complex. Moreover, since the porous body has a large ventilation resistance, even if the surface of the porous body could be ideally coated with a metal oxide catalyst, the inner surface of the porous body could hardly be utilized.
また、白金などの還元性物質で構成される上記
オゾン分解フイルターにおいては、オゾンを長期
にわたつて効率よく分解除去するためには還元物
質を多量用いねばならず、高価になるとともにコ
ンパクトなフイルターを作製することが不可能で
あり実用的ではない。 In addition, in the above ozone decomposition filter made of a reducing substance such as platinum, in order to efficiently decompose and remove ozone over a long period of time, a large amount of reducing substance must be used, making it expensive and requiring a compact filter. It is impossible and impractical to produce.
（発明の目的）
本発明の目的は、オゾンを長期にわたつて安定
して効率よく分解除去しうるフイルターを提供す
ることにある。本発明の他の目的は、容易かつ安
価に製作されうるオゾン分解フイルターを提供す
ることにある。本発明のさらに他の目的は、通気
抵抗の小さいオゾン分解フイルターを提供するこ
とにある。(Object of the Invention) An object of the present invention is to provide a filter that can stably and efficiently decompose and remove ozone over a long period of time. Another object of the present invention is to provide an ozone decomposition filter that can be manufactured easily and inexpensively. Still another object of the present invention is to provide an ozone decomposition filter with low ventilation resistance.
（発明の構成）
本発明のオゾン分解フイルターは、オゾンに比
較的侵され難い成分とオゾンに比較的侵され易い
成分からなる金属合金を有し、そのことにより上
記目的が達成される。(Structure of the Invention) The ozone decomposition filter of the present invention has a metal alloy consisting of a component that is relatively hard to be attacked by ozone and a component that is relatively easy to be attacked by ozone, thereby achieving the above object.
上記オゾンに比較的侵され難い成分としては、
銅が使用される。上記オゾンに比較的侵され易い
成分としては、アルミニウム、亜鉛、マグネシウ
ム及び鉄が使用される。これらが単独もしくは混
合して用いられる。 The components that are relatively less susceptible to ozone are:
Copper is used. Aluminum, zinc, magnesium, and iron are used as the components that are relatively easily attacked by ozone. These may be used alone or in combination.
金属合金を構成するこれら成分の含有比率は特
に制限はなく、フイルターの設置場所などに依存
して適宜設定される。金属合金は、オゾンとの接
触面積を広くとるために、好ましくは繊維状や網
状に成形されてフイルターに形成される。上記両
成分でなる金属合金としては、例えば、銅と亜鉛
の合金である黄銅が好ましい。 The content ratio of these components constituting the metal alloy is not particularly limited, and is appropriately set depending on the installation location of the filter. The metal alloy is preferably formed into a fibrous or mesh shape to form the filter in order to increase the contact area with ozone. As the metal alloy consisting of both of the above components, for example, brass, which is an alloy of copper and zinc, is preferable.
オゾンと反応し易い金属単独を使用することも
可能であるが、その場合には酸化により金属酸化
物を生ずる結果、金属の形態（繊維状、網状）は
早期に消失する。そのような状態ではオゾン分解
用フイルターとして機能しえない。比較的オゾン
に侵され難い金属と比較的オゾンに侵され易い金
属との合金でなる本発明の繊維状または網状フイ
ルターにおいては、当然、比較的オゾンに侵され
易い金属が先に侵される。しかし、その金属の酸
化物はオゾンに侵され難い金属に保持される結
果、そのオゾン分解は、オゾンに侵され易い金属
単独の場合よりも長期間持続されうる。しかも、
比較的オゾンに侵され易い金属が欠落してしまつ
た後も、比較的オゾンに侵され難い金属が複雑な
表面形状をなすため、結果的にオゾンの分解触媒
として効果的に機能することが考えられる。 It is also possible to use a metal alone that easily reacts with ozone, but in that case, metal oxides are produced by oxidation, and as a result, the metal form (fibrous, network) quickly disappears. Under such conditions, it cannot function as an ozone decomposition filter. In the fibrous or mesh filter of the present invention, which is made of an alloy of a metal that is relatively hard to be attacked by ozone and a metal that is relatively easy to be attacked by ozone, the metal that is relatively easily attacked by ozone is naturally attacked first. However, as a result of the metal oxide being retained by a metal that is not easily attacked by ozone, its ozone decomposition can be sustained for a longer period of time than in the case of a metal that is easily attacked by ozone alone. Moreover,
It is thought that even after the metals that are relatively easily attacked by ozone are removed, the metals that are relatively not easily attacked by ozone form a complex surface shape, and as a result, they function effectively as ozone decomposition catalysts. It will be done.
（実施例） 以下に本発明を実施例について説明する。(Example) The present invention will be described below with reference to Examples.
実施例 １
粒径１mmの活性炭をステンレス製金網より成る
容器に充填する。その前面に黄銅製金網（太さ約
200μｍ）を0.5ｇ/cmになるようにセツトする。こ
の系に0.5ppmのオゾンを0.2〜0.5m/secの速さで
通過させ、出口側のオゾンの濃度を測定した。出
口側の当初のオゾン濃度は0.02ppmであり、120
時間後も0.02〜0.04ppmでありその効果が認めら
れた。Example 1 Activated carbon having a particle size of 1 mm is filled into a container made of stainless steel wire mesh. In front of it is a brass wire mesh (approx.
200μm) to be 0.5g/cm. 0.5 ppm of ozone was passed through this system at a speed of 0.2 to 0.5 m/sec, and the ozone concentration on the outlet side was measured. The initial ozone concentration on the outlet side is 0.02ppm, which is 120
Even after hours, the concentration was 0.02 to 0.04 ppm, and its effect was recognized.
実施例 ２
実施例１の黄銅製金網を銅−アルミニウム金網
（太さ約250μｍ）に替えたところ、120時間後の
オゾン濃度は0.05ppmであつた。Example 2 When the brass wire mesh in Example 1 was replaced with a copper-aluminum wire mesh (thickness: approximately 250 μm), the ozone concentration after 120 hours was 0.05 ppm.
実施例 ３
実施例１の黄銅製金網を銅−鉄金網（太さ約
200μｍ）に替えたところ、120時間後のオゾン濃
度は0.05〜0.07ppmであつた。Example 3 The brass wire mesh of Example 1 was transformed into a copper-iron wire mesh (thickness approx.
200 μm), the ozone concentration after 120 hours was 0.05 to 0.07 ppm.
実施例 ４
実施例１の黄銅製金網を銅−マグネシウム金網
（太さ約250μｍ）に替えたところ、120時間後の
オゾン濃度は0.04〜0.07ppmであつた。Example 4 When the brass wire mesh of Example 1 was replaced with a copper-magnesium wire mesh (thickness: approximately 250 μm), the ozone concentration after 120 hours was 0.04 to 0.07 ppm.
比較例 １
粒径１mmの活性炭をステンレス製金網より成る
容器に充填する。この系に0.5ppmのオゾンを0.2
〜0.5m/secの速さで通過させ、出口側のオゾン
の濃度を測定した。出口側の当初のオゾン濃度は
0.02ppmであり、120時間後は0.2〜0.3ppmとなつ
ていた。Comparative Example 1 Activated carbon with a particle size of 1 mm is filled into a container made of stainless steel wire mesh. Add 0.2 ppm of ozone to this system.
It was passed through at a speed of ~0.5 m/sec, and the ozone concentration on the exit side was measured. The initial ozone concentration on the outlet side is
It was 0.02 ppm, and after 120 hours it was 0.2 to 0.3 ppm.
比較例 ２
粒径１mmの活性炭をステンレス製金網より成る
容器に充填する。その前面に亜鉛製繊維（太さ約
250μｍ）を0.2ｇ/cm2になるようにセツトする。こ
の系に0.5ppmのオゾンを0.2〜0.5m/secの速さで
通過させた。120時間では亜鉛製繊維に顕著な酸
化は見られなかつたが500時間では亜鉛製繊維の
欠落が認められた。Comparative Example 2 Activated carbon with a particle size of 1 mm is filled into a container made of stainless steel wire mesh. In front of it is a zinc fiber (approx.
250μm) to be 0.2g/cm 2 . Ozone at a concentration of 0.5 ppm was passed through this system at a speed of 0.2 to 0.5 m/sec. No significant oxidation was observed in the zinc fibers after 120 hours, but some loss of zinc fibers was observed after 500 hours.
（発明の効果）
本発明のフイルターによれば、このように、有
害な発生オゾンを極めて効果的に分解除去するこ
とができ、かつその効果は長期間にわたつて持続
しうる。しかも、そのフイルターは金属合金を繊
維状もしくは網状にしたものであるため、製作が
著しく容易である。(Effects of the Invention) According to the filter of the present invention, harmful generated ozone can be decomposed and removed very effectively, and the effect can be maintained for a long period of time. Moreover, since the filter is made of a metal alloy in the form of fibers or mesh, it is extremely easy to manufacture.
Claims (1)
び鉄から選ばれたオゾンに比較的侵され易い成分
からなる金属合金を有するオゾン分解フイルタ
ー。 ２ 金属合金が繊維状に構成されてなる特許請求
の範囲第１項に記載のオゾン分解フイルター。 ３ 金属合金が網状に構成されてなる特許請求の
範囲第１項に記載のオゾン分解フイルター。 ４ 金属合金が黄銅である特許請求の範囲第１
項、第２項もしくは第３項記載のオゾン分解フイ
ルター。[Scope of Claims] 1. An ozone decomposition filter comprising a metal alloy consisting of copper and a component relatively easily attacked by ozone selected from aluminum, zinc, magnesium, and iron. 2. The ozone decomposition filter according to claim 1, wherein the metal alloy is configured in the form of fibers. 3. The ozone decomposition filter according to claim 1, wherein the metal alloy is configured in a net shape. 4 Claim 1 in which the metal alloy is brass
The ozone decomposition filter according to item 1, 2 or 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59075509A JPS60220127A (en) | 1984-04-13 | 1984-04-13 | Ozone decomposition filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59075509A JPS60220127A (en) | 1984-04-13 | 1984-04-13 | Ozone decomposition filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60220127A JPS60220127A (en) | 1985-11-02 |
| JPH0212129B2 true JPH0212129B2 (en) | 1990-03-19 |
Family
ID=13578277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59075509A Granted JPS60220127A (en) | 1984-04-13 | 1984-04-13 | Ozone decomposition filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60220127A (en) |
-
1984
- 1984-04-13 JP JP59075509A patent/JPS60220127A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60220127A (en) | 1985-11-02 |
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