Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6773844 | Proton conductive film and fuel cell using the same | Yoshihiko Nakano | 2004-08-10 |
| 6686095 | Gel electrolyte precursor and chemical battery | Norio Takami, Hirohisa Miyamoto, Satoshi Mikoshiba | 2004-02-03 |