Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6863812 | Collector for adsorptive recovery of dissolved metal from sea water | Akio Katakai, Noriaki Seko | 2005-03-08 |
| 6852233 | Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material | Akio Katakai, Noriaki Seko, Shin Hasegawa, Kunio Fujiwara, Hiroshi Nagai +8 more | 2005-02-08 |
| 6818038 | Polymer substrates for radiation-induced graft polymerization and filter stock | Kunio Fujiwara, Hideo Kawazu, Teruo Masubuchi, Junichi Kanno, Naotoshi Endo +1 more | 2004-11-16 |
| 6811771 | Bactericidal organic polymeric material | Kazuyoshi Takeda, Kunio Fujiwara, Tadashi Adachi, Hideo Kawazu, Makoto Komatsu +2 more | 2004-11-02 |
| 6773654 | Polymer substrates for radiation-induced graft polymerization and filter stock | Kunio Fujiwara, Hideo Kawazu, Teruo Masubuchi, Junichi Kanno, Naotoshi Endo +1 more | 2004-08-10 |
| 6659751 | Apparatus for radiation-induced graft polymerization treatment of fabric webs | Kunio Fujiwara, Hideo Kawazu, Teruo Masubuchi, Junichi Kanno, Naotoshi Endo +1 more | 2003-12-09 |
| 6586099 | Collector of metals dissolved in sea water | Akio Katakai, Noriaki Seko | 2003-07-01 |
| 6333078 | Collector of dissolved metal from sea water having an amidoxime group and a hydrophilic group, a method for production thereof | Akio Katakai, Noriaki Seko | 2001-12-25 |
| 6228135 | Purification of very slightly contaminated air within a clean room | Kunio Fujiwara, Hideaki Sekiguchi, Takeshi Takai, Atsushi Kobayashi | 2001-05-08 |
| 6127433 | Process for producing separation functional fibers and ion-exchange fibers produced therefrom | Toshihiko Yamada, Hiroyuki Shima, Kunio Fujiwara | 2000-10-03 |
| 5783608 | Process for producing separation functional fibers and ion-exchange fibers produced therefrom | Toshihiko Yamada, Hiroyuki Shima, Kunio Fujiwara | 1998-07-21 |
| 5743940 | Process for producing gas adsorbent | Jiro Okamoto, Kunio Fujiwara, Hideaki Sekiguchi, Toshiaki Fujii | 1998-04-28 |
| 5738775 | Electrically regenerable desalting apparatus | Hiroshi Nagai, Syu Nakanishi, Kunio Fujiwara | 1998-04-14 |
| 5648400 | Process for producing polymeric electrolyte complex and ion-exchange resin | Satoshi Tanaka, Tsuyoshi Tsutsui | 1997-07-15 |
| 5425866 | Electrically regenerable demineralizing apparatus | Isao Ishigaki, Kunio Fujiwara, Hideaki Sekiguchi, Hideo Kawazu, Takayuki Saito | 1995-06-20 |
| 5344560 | Process for producing filtration membranes having amino acids that are capable of adsorbing proteins | Kyoichi Saito | 1994-09-06 |
| 5308467 | Electrically regenerable demineralizing apparatus | Isao Ishigaki, Kunio Fujiwara, Hideaki Sekiguchi, Hideo Kawazu, Takayuki Saito | 1994-05-03 |
| 5075342 | Process for producing an ion exchange membrane by grafting non ion-selective monomers onto a ion exchange | Isao Ishigaki, Jiro Okamoto | 1991-12-24 |
| 5071880 | Process for producing a bifunctional filter membrane having iminodiacetic acid groups | Jiro Okamoto, Kyoichi Saito | 1991-12-10 |
| 4980335 | Acidic gas adsorber having a metal phthalocyanine on an ion exchanger | Jiro Okamoto, Kunio Fijiwara, Hideaki Sekiguchi, Toshiaki Fujii | 1990-12-25 |
| 4897433 | Process for producing an anti-thrombogenic material by graft polymerization | Jiro Okamoto, Seiryo Tasaki, Tadayuki Onishi | 1990-01-30 |
| 4622366 | Uranium adsorbing material and process for preparing the same | Jiro Okamoto, Isao Ishigaki, Akio Katakai | 1986-11-11 |
| 4539277 | Ion exchange membrane and process for producing the same | Isao Ishigaki, Jiro Okamoto | 1985-09-03 |
| 4407846 | Method of producing a hydrophilic membrane from a polyethylene base film | Sueo Machi, Isao Ishigaki, Kazuo Murata, Shiro Tanso, Keizi Senoo | 1983-10-04 |
| 4379200 | Novel method of producing ion exchange membrane | Sueo Machi, Isao Ishigaki | 1983-04-05 |