Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8557472 | Proton conducting polymer membrane, method for production thereof and fuel cell therewith | Fusaki Fujibayashi, Satoshi Takase | 2013-10-15 |
| 8445141 | Sulfonic acid group-containing polymer, method for producing the same, resin composition containing such sulfonic acid group-containing polymer, polymer electrolyte membrane, polymer electrolyte membrane/electrode assembly, and fuel cell | Kota Kitamura, Hiroki Yamaguchi, Masahiro Yamashita, Kousuke Sasai | 2013-05-21 |
| 8304133 | Method for producing a polymer electrolyte membrane | Kousuke Sasai, Hiroki Yamaguchi, Kouta Kitamura, Masahiro Yamashita | 2012-11-06 |
| 8216727 | Aromatic hydrocarbon based proton exchange membrane and direct methanol fuel cell using same | Masahiro Yamashita, Kota Kitamura | 2012-07-10 |
| 8187734 | Proton-conducting polymer composition and method for preparation thereof, catalyst ink containing said proton-conducting polymer composition and fuel cell including said catalyst ink | Masahiro Yamashita, Kota Kitamura | 2012-05-29 |
| 7754844 | Polyarylene ether compound containing sulfonic acid group, composition containing same, and method for manufacturing those | Kota Kitamura, Shigenori Nagahara, Masahiro Yamashita, Junko Nakao | 2010-07-13 |
| 7649025 | Composite ion-exchange membrane | Kota Kitamura, Shigenori Nagahara, Shiro Hamamoto, Naohiko Takimoto, Hideki Sugihara +3 more | 2010-01-19 |
| 7537852 | Composite ion exchange membrane and electrolyte membrane electrode assembly | Shiro Hamamoto, Satoshi Takase, Shigenori Nagahara, Kota Kitamura, Junko Nakao +1 more | 2009-05-26 |
| 7288603 | Polybenzazole compound having sulfonic acid group and/or phosphonic acid group, resin composition containing the same, resin molding, solid polymer electrolyte membrane, solid polymer electrolyte membrane/electrode assembly and method of preparing assembly | Kota Kitamura, Hiroaki Taguchi, Junko Nakao, Shiro Hamamoto, Hiroshi Tachimori +1 more | 2007-10-30 |
| 6689437 | Oxygen-absorbing material | Hisashi Ubara, Tetsuo Kodama, Naoki Mizuno, Ken Takasugi, Syunji Kurahara +4 more | 2004-02-10 |
| 6673445 | Polybenzazole fibers and their utilization | Tooru Kitagawa, Hideki Sugihara, Atsushi Kaji, Yukihiro Nomura | 2004-01-06 |
| 5171506 | Process for producing polyester fibers | Mitsuhiro Sakuda, Kazuyuki Yabuki, Hideaki Ishihara, Tooru Kitagawa | 1992-12-15 |