Issued Patents All Time
Showing 1–25 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8610405 | Charge and discharge circuit of secondary battery and battery pack | Kazuo Yamazaki, Hidenori Tanaka, Yukihiro Terada | 2013-12-17 |
| 8098056 | Bidirectional converter and electronic device | Kazuo Yamazaki, Yukihiro Terada, Hidenori Tanaka | 2012-01-17 |
| 7830675 | Switching power supply device and method of starting the same | Kazuo Yamazaki | 2010-11-09 |
| 7436644 | Switching circuit, switching method, protective device and battery pack | Kazuo Yamazaki, Hitoshi Akiho, Takayuki Aita, Kenji Enomoto | 2008-10-14 |
| 7202633 | Driving circuit for field effect transistor | Kazuo Yamazaki, Kenji Enomoto, Takayuki Aita | 2007-04-10 |
| 7193390 | Apparatus for connecting secondary battery cells in series and method for controlling secondary battery cells connected in series | Kazuo Yamazaki, Tamon Ikeda | 2007-03-20 |
| 7023179 | Charging apparatus and charging method | Kazuo Yamazaki, Tadahisa Yamamoto | 2006-04-04 |
| 7023180 | Charging apparatus and method for a secondary battery of a portably electronic device | Kazuo Yamazaki, Tadahisa Yamamoto | 2006-04-04 |
| 6961255 | Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and/or current to a load | Tamon Ikeda, Kazuo Yamazaki | 2005-11-01 |
| 6956357 | Charging apparatus and charging method | Kazuo Yamazaki, Tadahisa Yamamoto | 2005-10-18 |
| 6956754 | Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and/or current to a load | Tamon Ikeda, Kazuo Yamazaki | 2005-10-18 |
| 6949913 | Charging apparatus and charging method | Kazuo Yamazaki, Tadahisa Yamamoto | 2005-09-27 |
| 6917530 | Switching power supply using controlled negative feedback in series with a switching device and responsive to the voltage and or current to a load | Tamon Ikeda, Kazuo Yamazaki | 2005-07-12 |
| 6650090 | Battery pack and signal transmission system | Tamon Ikeda, Kazuo Yamazaki, Makoto Kamoshida, Tadahisa Yamamoto, Kuniharu Suzuki | 2003-11-18 |
| 6552562 | Current detecting apparatus and its control method | Tamon Ikeda, Kazuo Yamazaki | 2003-04-22 |
| 6465913 | Power source unit | Yoshisada Okayasu, Akio Nakamura, Tsutomu Suda | 2002-10-15 |
| 6462972 | Power source apparatus for providing a power source in a standby mode and a pulse generating apparatus | Tamon Ikeda, Kazuo Yamazaki | 2002-10-08 |
| 6452820 | Power supplying apparatus and method having a primary side insulated from a secondary side | Tamon Ikeda, Kazuo Yamazaki | 2002-09-17 |
| 6373724 | Power supply apparatus | Tamon Ikeda, Kazuo Yamazaki | 2002-04-16 |
| 6326768 | Method, apparatus and battery pack for charging and discharging secondary batteries | Tamon Ikeda | 2001-12-04 |
| 6291965 | Battery charger | Toshitaka Takei, Kuniharu Suzuki | 2001-09-18 |
| 6169341 | Power supplying adapter, electronic equipment, and signal transmission system | — | 2001-01-02 |
| 6124700 | Charging method, charging equipment, and integrated circuit | Kazunori Ozawa, Kuniharu Suzuki, Kazuo Yamazaki | 2000-09-26 |
| 6118255 | Charging apparatus, secondary battery apparatus, charging system, and charging method | Toshitaka Takei, Kuniharu Suzuki | 2000-09-12 |
| 6066939 | Secondary battery pack | Toshitaka Takei, Kuniharu Suzuki | 2000-05-23 |