Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12341447 | Power conversion device | Kazuaki Tobari, Yusaku Onuma, Takuya Sugimoto, Hiroshi Watanabe | 2025-06-24 |
| 7102319 | Synchronous motor and a rotation control method thereof, as well as, an inverter for use of the synchronous motor | Hisayuki Miyajima, Shigenori Miyairi, Hiroshi Watanabe | 2006-09-05 |
| 6426885 | Inverter device and motor driving device provided with inrush current prevention circuit | Syuichi Sekiguchi, Tomoya Kamezawa | 2002-07-30 |
| 6400539 | Inverter device and motor driving device provided with inrush prevention circuit | Syuichi Sekiguchi, Tomoya Kamezawa | 2002-06-04 |
| 6169670 | Inverter apparatus operatable over extended frequency range while suppressing output error | Tomofumi Okubo, Masahiro Hiragi | 2001-01-02 |
| 6166935 | Inverter apparatus with off signal of at least minimum time duration | Naoki Takata, Akiko Ishii | 2000-12-26 |
| 4808933 | Rotating speed measuring apparatus having a corrector for low and high speeds using angle and frequency transducers | Sumio Kobayashi, Hiroyuki Tomita, Tadashi Okawa, Hiroshi Sugai | 1989-02-28 |