Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9575131 | Residual quantity display system | — | 2017-02-21 |
| 8232770 | Battery remaining capacity predicting apparatus | — | 2012-07-31 |
| 7693671 | Battery control device, battery control method, battery pack, electronic apparatus and control circuit for calculating charging-discharging count of battery | Hideo Fukuda | 2010-04-06 |
| 7276881 | Protection method, control circuit, and battery unit | Shigeo Tanaka | 2007-10-02 |
| 6885168 | Battery unit having means for preventing over-discharge | Shigeo Tanaka | 2005-04-26 |
| 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 |
| 6014920 | Paper-punching device for use in a image-forming apparatus | Yasuji Yamauchi, Toshio Yamanaka, Masashi Hirai, Kyousuke Taka, Kinji Uno +2 more | 2000-01-18 |
| 6008629 | Charging-and-discharging device for an electronic apparatus, and an electronic apparatus including the same, utilizing a charging device providing a constant charging current | Mituo Saeki, Hidetoshi Yano, Hidekiyo Ozawa | 1999-12-28 |
| 5872445 | Power supply device having low internal power consumption and electronic appliances using said power supply device | Hidekiyo Ozawa, Hidetoshi Yano, Mituo Saeki | 1999-02-16 |
| 5839336 | Paper-punching device for use in an image-forming apparatus | Yasuji Yamauchi, Toshio Yamanaka, Masashi Hirai, Kyousuke Taka, Kinji Uno +2 more | 1998-11-24 |
| 5717256 | Power supply apparatus and electronic appliance equipped with the power supply apparatus | Mituo Saeki, Hidetoshi Yano, Hidekiyo Ozawa | 1998-02-10 |
| 5625237 | Remove power source device having improved capacity indication capability, and an electronic device using the removable power source device | Mituo Saeki, Hidekiyo Ozawa | 1997-04-29 |
| 5608304 | Battery protection circuit and battery pack and apparatus using the battery pack | — | 1997-03-04 |
| 5016061 | Recirculating automatic document feeder | Osamu Tashiro | 1991-05-14 |
| 4901107 | Lens repositioning device in a copier | Ken-ichi Iwamoto, Tatsushi Hayashi | 1990-02-13 |
| 4779121 | Document scanning device | — | 1988-10-18 |