Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6656634 | Non-aqueous electrolytic secondary cell | — | 2003-12-02 |
| 6534217 | Positive electrode material and secondary battery using the same | Keizou Koga, Junji Kuyama, Masayuki Nagamine | 2003-03-18 |