Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9156780 | Sulfonic acid group-containing diamine compound and method for producing the same | — | 2015-10-13 |
| 9088030 | Polyimide, polyimide-based polymer electrolyte membrane, membrane-electrode assembly, and polymer electrolyte fuel cell | Akira Shimazu, Hiroyuki Nishii | 2015-07-21 |
| 8980499 | Proton-conductive polymer electrolyte membrane, and membrane-electrode assembly and polymer electrolyte fuel cell using the same | Hiroyuki Nishii, Akira Shimazu | 2015-03-17 |
| 8748664 | Diamine compound and production method thereof | — | 2014-06-10 |
| 8563194 | Electrolyte membrane for polymer electrolyte fuel cell and method of manufacturing the same | Hiroyuki Nishii, Otoo Yamada, Sakura Toshikawa | 2013-10-22 |
| 8304135 | Proton-conductive polymer electrolyte membrane, method of manufacturing the proton-conductive polymer electrolyte membrane, and membrane-electrode assembly and polymer electrolyte fuel cell using the proton-conductive polymer electrolyte membrane | Hiroyuki Nishii, Otoo Yamada, Sakura Toshikawa | 2012-11-06 |