Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880435 | Alkaline storage cell and manufacturing method therefor | Tsukasa Itou, Ryuji Kawase, Masao Ichiba | 1989-11-14 |
| 4826744 | Alkaline storage cell | Tsukasa Itou, Ryuji Kawase, Masao Ichiba, Fumituga Tachihara, Takashisa Awajitani | 1989-05-02 |