Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7601448 | Polymer electrolyte membrane and fuel cell | Katsuhiko Iwasaki | 2009-10-13 |
| 7226987 | Aromatic polymer phosphonic acid derivative and process for production the same | Shigeru Sasaki, Arihiro Yashiro | 2007-06-05 |
| 6828407 | Polymer electrolyte composition and uses thereof | Shigeru Sasaki, Arihiro Yashiro, Takumi Taniguchi | 2004-12-07 |