Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6534952 | Spiral electrode group winding method and device and battery using them | Teruhisa Ishikawa, Yasufumi Tanaka, Yoshiki Osawa | 2003-03-18 |
| 5772704 | Cylindrical battery assembling apparatus | Kouichi Nishihara, Katsuhisa Wadasaki, Seiichi Katou | 1998-06-30 |
| 5718395 | Spiral electrode assembly manufacturing apparatus | Saburo Nakatsuka, Katsushi Matsuo | 1998-02-17 |