Issued Patents 2002
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6492791 | Protection method, control circuit, and battery unit | Masafumi Okumura, Shigeo Tanaka, Hidekiyo Ozawa | 2002-12-10 |
| 6486635 | Monitor signal output circuit, battery pack, battery voltage monitor circuit, battery system, apparatus, battery voltage monitor method, and battery voltage monitor program storage medium | Kouichi Matsuda, Nakazawa Shigeaki, Hidekiyo Ozawa | 2002-11-26 |
| 6452364 | Battery charge control circuit, battery charging device, and battery charge control method | Seiya Kitagawa, Hidekiyo Ozawa, Toshiyuki Matsuyama | 2002-09-17 |
| 6414403 | Power unit | Seiya Kitagawa, Hidekiyo Ozawa | 2002-07-02 |
| 6404076 | DC-DC converter circuit selecting lowest acceptable input source | Kouichi Matsuda, Hidekiyo Ozawa | 2002-06-11 |