Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6753112 | Positive electrode active material and non-aqueous secondary battery using the same | Ryo Sakai, Koshin Tanaka, Kazuki Amemiya, Hajime Takeuchi, Yasuhiro Shirakawa +1 more | 2004-06-22 |
| 6686093 | Positive electrode active material for nonaqueous electrolytic solution secondary battery and nonaqueous electrolytic solution secondary battery therewith | Ryo Sakai, Yasuhiro Shirakawa, Koshin Tanaka, Hajime Takeuchi | 2004-02-03 |