Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6495290 | Proton conductor, production method thereof, and electrochemical device using the same | Björn Pietzak, Constance Gertrud Rost, Masafumi Ata | 2002-12-17 |
| 6380710 | Photovoltaic-charged secondary battery device | Haruo Watanabe, Ritsuko Inoue, Tomikazu Watanabe, Hiroshi Miyazawa | 2002-04-30 |