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Patent Searching and Data


Title:
CHEMICAL FILTER
Document Type and Number:
WIPO Patent Application WO/2004/094040
Kind Code:
A1
Abstract:
A chemical filter, characterized in that it uses, as an adsorption layer, an organic porous ion exchanger which has an open pore structure wherein a meso pore having an average diameter of 5 to 1,000 μm is formed in the wall between a macro pore and a macro pore connected with each other, has a total pore volume of 1 to 50 ml/g, has ion-exchange groups being uniformly distributed, and has an ion-exchange capacity of 3.0 mg equivalent/g-dry porous material or more. The chemical filter can maintain the capacity of adsorbing and removing a gaseous contaminant even at an enhanced gas transmission rate, and can remove also a trace amount of a gaseous contaminant.

Inventors:
Inoue, Hiroshi c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Yamanaka, Koji c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Yoshida, Akiko c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Kawada, Kazuhiko c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Toriyama, Yukiko c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Application Number:
PCT/JP2004/005812
Publication Date:
November 04, 2004
Filing Date:
April 22, 2004
Export Citation:
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Assignee:
ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-ku Tokyo, 31, 13686, JP)
Inoue, Hiroshi c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Yamanaka, Koji c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Yoshida, Akiko c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Kawada, Kazuhiko c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
Toriyama, Yukiko c/o ORGANO CORPORATION (2-8 Shinsuna 1-chome, Koto-k, Tokyo 31, 13686, JP)
International Classes:
B01D53/02; B01D53/04; B01J20/26; B01J39/18; B01J41/12; H01L21/02; (IPC1-7): B01D53/02
Foreign References:
JP2002306976A2002-10-22
JPH10174838A1998-06-30
JP2000051634A2000-02-22
JPH11226338A1999-08-24
Other References:
See also references of EP 1621244A1
Attorney, Agent or Firm:
Akatsuka, Kenji (Hongo Bldg, 5F 1-16, Kanda Suda-cho, Chiyoda-k, Tokyo 41, 10100, JP)
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