Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 | Masafumi Okumura, Hidetoshi Yano, Hidekiyo Ozawa | 1999-12-28 |
| 5905361 | Charging-and-discharging device, constant-voltage and constant-current control circuit, and electronic device | Hidekiyo Ozawa, Tsutomu Suzui | 1999-05-18 |
| 5872445 | Power supply device having low internal power consumption and electronic appliances using said power supply device | Hidekiyo Ozawa, Masafumi Okumura, Hidetoshi Yano | 1999-02-16 |
| 5808444 | Charging-and-discharging device, battery pack and electronic apparatus including them | Hidekiyo Ozawa, Takeshi Kubo | 1998-09-15 |
| 5801514 | Charging-and-discharging control device, a battery pack, and an electronic apparatus with improved charge and discarge control | Hidetoshi Yano, Hidekiyo Ozawa | 1998-09-01 |
| 5717256 | Power supply apparatus and electronic appliance equipped with the power supply apparatus | Masafumi Okumura, 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 | Masafumi Okumura, Hidekiyo Ozawa | 1997-04-29 |
| 5610450 | Power supply apparatus for efficiently utilizing battery and electronic apparatus using the power supply | Tsutomu Suzui, Hidekiyo Ozawa, Hisafumi Mitsui | 1997-03-11 |
| 5572412 | Power supply with heated protection diode | Hidetoshi Yano | 1996-11-05 |