Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7556884 | Battery pack and thermostat used therefor | Yoshisada Okayasu | 2009-07-07 |
| 7541690 | Signal transmission method, signal transmission device, and liquid crystal projector | Kenichi Kobayashi, Yoshimasa Kitta | 2009-06-02 |
| 7436644 | Switching circuit, switching method, protective device and battery pack | Tamiji Nagai, Kazuo Yamazaki, Takayuki Aita, Kenji Enomoto | 2008-10-14 |
| 5691620 | Battery charging method | Tamiji Nagai | 1997-11-25 |
| 5637981 | Method for charging a secondary battery and charger used therefor using constant current and constant voltage | Tamimi Nagai | 1997-06-10 |
| 5576608 | Method for charging secondary battery and charger used therefor | Tamimi Nagai | 1996-11-19 |