Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5670445 | Cleaning agent of harmful gas and cleaning method | Koichi Kitahara, Kenji Otsuka, Toshiya Hatakeyama | 1997-09-23 |
| 5663013 | Battery with a spacer between the electrode group and the cover | Satoshi Narukawa, Toru Amazutsumi, Yasuhiro Yamauchi | 1997-09-02 |