Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6614667 | Method and apparatus for driving switching element in power converter | Kazuyuki Itoh, Katsuaki Tanaka, Yoshinobu Takayanagi | 2003-09-02 |
| 6438004 | Power conversion apparatus utilizing soft switching resonant snubber circuitry | Katsuaki Tanaka, Kazuyuki Itoh | 2002-08-20 |
| 6414854 | Driving device and method of switching element in power conversion apparatus using current-controlled semiconductor switching element | Kazuyuki Itoh, Katsuaki Tanaka, Yoshinobu Takayanagi | 2002-07-02 |
| 6353543 | Switching circuit of power conversion apparatus | Kazuyuki Itoh, Katsuaki Tanaka | 2002-03-05 |
| 6351107 | Driving device of switching element in power conversion device using current control semiconductor switching element | — | 2002-02-26 |
| 6323634 | Magnetic sensor apparatus, current sensor apparatus and magnetic sensor element | Shiro Nakagawa, Katsuaki Tanaka, Katsumi Yabusaki | 2001-11-27 |
| 6316931 | Magnetic sensor apparatus and current sensor apparatus | Shiro Nakagawa, Kazuyuki Itoh, Katsumi Yabusaki | 2001-11-13 |
| 6208541 | PWM inverter apparatus | Kazuyuki Itoh, Katsuaki Tanaka | 2001-03-27 |
| 6172882 | Partial resonance PWM converter | Katsuaki Tanaka, Kazuyuki Ito | 2001-01-09 |
| 6154379 | Electric power conversion device | — | 2000-11-28 |
| 5234844 | Process for forming bipolar transistor structure | — | 1993-08-10 |
| 5219768 | Method for fabricating a semiconductor device | — | 1993-06-15 |
| 4974045 | Bi-polar transistor structure | — | 1990-11-27 |
| 4866000 | Fabrication method for semiconductor integrated circuits | — | 1989-09-12 |
| 4749663 | Process of fabricating a semiconductor IC involving simultaneous sputter etching and deposition | — | 1988-06-07 |