Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12324105 | Maleimide resin composition, prepreg, resin film, laminated board, printed wiring board, and semiconductor package | Chihiro Hayashi, Minoru Kakitani, Takao Tanigawa, Ryuji Akebi, Naoyoshi Sato | 2025-06-03 |
| 12313998 | Toner container capable of shortening time of cleaning task before reuse and image forming apparatus | — | 2025-05-27 |
| 10514642 | Image forming apparatus | — | 2019-12-24 |
| 10472197 | Image forming apparatus | Tomoya Hotani, Hiroyuki Harada, Takeshi Iketani, Rei Yamagishi, Masaaki Maruta | 2019-11-12 |
| 9805295 | Image forming apparatus and operating device | — | 2017-10-31 |
| 8924051 | Drive device for railway vehicle | Daijiro Araki, Motomi Shimada, Shuichi Tachihara, Masahiro Nagasu | 2014-12-30 |
| 8708329 | Document conveying device and image forming apparatus including the same | Katsuhiko Hanamoto | 2014-04-29 |
| 7176645 | Control apparatus for electric railcar | Motomi Shimada | 2007-02-13 |
| 6633495 | DC apparatus and vehicle using the same | Seiji Ishda, Toshiaki Okuyama, Tetsuo Kojima, Kiyoshi Nakata | 2003-10-14 |
| 6556460 | Method for controlling a vehicle provided with an electric power converter | Seiji Ishida, Toshiaki Okuyama, Tetsuo Kojima, Kiyoshi Nakata | 2003-04-29 |
| 6274998 | Controller for electric vehicles | Takashi Kaneko, Takeshi Ando, Ken Itou | 2001-08-14 |
| 5929519 | Semiconductor module including switching device chips and diode chips | Mutsuhiro Mori, Ryuichi Saito, Shin Kimura, Syuuji Saitoo, Kiyoshi Nakata +2 more | 1999-07-27 |
| 5801936 | Semiconductor module for a power conversion device | Mutsuhiro Mori, Ryuichi Saito, Shin Kimura, Kiyoshi Nakata, Syuuji Saitoo +2 more | 1998-09-01 |
| 5731970 | Power conversion device and semiconductor module suitable for use in the device | Mutsuhiro Mori, Ryuichi Saito, Shin Kimura, Syuuji Saitoo, Kiyoshi Nakata +2 more | 1998-03-24 |
| 5638266 | Free wheel diode arrangement for neutral point clamped electric power conversion apparatus | Syuuji Saitou, Hiroshi Itahana | 1997-06-10 |
| 5583385 | Power converting device for reducing an induction problem | Syuuji Saitou, Takayuki Matui, Ken-ichi Itoh, Takashi Tsuboi, Eiichi Toyota | 1996-12-10 |
| 5535114 | Power converter | Yoshio Tsutsui, Takeshi Ando, Takayuki Matsui, Eiichi Toyota, Syuuji Saitoo | 1996-07-09 |
| 5461556 | Power converter | Yoshio Tsutsui, Takeshi Ando, Takayuki Matsui, Eiichi Toyota, Syuuji Saitoo | 1995-10-24 |
| 5459655 | Neutral-point clamped inverter device using semiconductor modules | Mutsuhiro Mori, Ryuichi Saito, Shin Kimura, Kiyoshi Nakata, Syuuji Saitoo +2 more | 1995-10-17 |
| 5400242 | Multi-series inverter arrangement | Takeshi Ando, Yoshio Tsutsui | 1995-03-21 |
| 5334258 | Washing method | Nagato Osano, Yukihiro Imai, Akihito Hosaka, Ikuo Nakajima, Toshiji Nishiguchi | 1994-08-02 |
| 4924168 | Control apparatus for PWM-controlled, variable voltage/variable frequency inverters | Yoshiji Jimbo | 1990-05-08 |
| 4785225 | Control apparatus for an induction motor | Yoshiji Jimbo, Kingo Abe, Jinkoo Choo, Seiki Amikura, Yozo Tsuzuki | 1988-11-15 |
| 4672525 | Guard system for inverter apparatus | Shigetoshi Okamatsu | 1987-06-09 |
| 4644240 | Method and apparatus for controlling reverse-conducting GTO thyristor | Takashi Tsuboi | 1987-02-17 |