Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6498459 | Electronic equipment and battery unit | Hidekiyo Ozawa | 2002-12-24 |
| 6492791 | Protection method, control circuit, and battery unit | Mitsuo Saeki, Shigeo Tanaka, Hidekiyo Ozawa | 2002-12-10 |