Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12186714 | Reverse osmosis membrane and method of producing the same | Mavis C. Y. Wong | 2025-01-07 |
| 6821430 | Method of treating reverse osmosis membrane element, and reverse osmosis membrane module | Masaaki Andou, Terutaka Watanabe, Masahiko Hirose, Mark Wilf, Craig R. Bartels +1 more | 2004-11-23 |
| 6565747 | Spiral wound type separation membrane element | Takuji Shintani, Katsumi Ishii | 2003-05-20 |
| 6413425 | Reverse osmosis composite membrane and reverse osmosis treatment method for water using the same | Kenichi Ikeda | 2002-07-02 |
| 6177011 | Composite reverse osmosis membrane having a separation layer with polyvinyl alcohol coating and method of reverse osmotic treatment of water using the same | Kenichi Ikeda | 2001-01-23 |
| 6026968 | Reverse osmosis composite membrane | Kenichi Ikeda | 2000-02-22 |
| 5910357 | Separation membrane and method of producing the same, and shape memory polymer composition | Yoshihiko Kondo, Kenichi Ikeda, Hitoshi Takano, Amane Mochizuki | 1999-06-08 |
| 5888605 | Polysulfone semipermeable membrane and method of manufacturing the same | Kenichi Ikeda | 1999-03-30 |
| 5882382 | Polyimide semipermeable membrane | Kenichi Ikeda | 1999-03-16 |
| 5859182 | Fluorine-containing polyquinazolone polymer and separation membrane using the same | Kenichi Ikeda | 1999-01-12 |
| 5817165 | Fluorine-containing polyimide gas separation membrane and method of manufacturing the same | Masatoshi Maeda, Kenichi Ikeda | 1998-10-06 |
| 5811196 | Laminated asymmetric membrane and method for manufacturing the same | Kenichi Ikeda | 1998-09-22 |
| 5749943 | Method of selectively separating unsaturated hydrocarbon | Akira Shimazu, Kenichi Ikeda | 1998-05-12 |
| 5750633 | Dope for cast formation and method of manufacturing the same | Tomomi Ohara | 1998-05-12 |
| 5709733 | Gas separation method | Kenichi Ikeda, Kenichi Inoue | 1998-01-20 |
| 5690870 | Method of manufacturing a polyimide-type gas permeation membrane including fluorine | Ping Xu, Tomomi Ohara | 1997-11-25 |
| 5647894 | Gas separating composite membrane and process for producing the same | Tomomi Ohara, Ping Xu, Akira Shimazu, Kenichi Ikeda | 1997-07-15 |
| 5510527 | Acid chloride | Katsuhide Kojima, Yutaka Nakazono, Masahiko Hirose, Yasuo Kihara, Masatoshi Maeda +2 more | 1996-04-23 |
| 5336409 | Composite reverse osmosis membrane and novel acid chloride | Katsuhide Kojima, Yutaka Nakazono, Mitsuru Shimizu, Masahiko Hirose, Yasuo Kihara +3 more | 1994-08-09 |
| 5162631 | Power supply unit for electrical discharge machine | Akihiro Komori | 1992-11-10 |