Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7224133 | Control apparatus, dual chip inverter and single chip inverter of AC motors | Junnosuke Nakatsugawa, Tsuyoshi Tanaka, Kenji Sakurai | 2007-05-29 |
| 6828752 | Driving equipment and semiconductor equipment for alternating-current motor | Junnosuke Nakatsugawa, Hitoshi Ohura, Tsuyoshi Tanaka, Yukio Kawabata | 2004-12-07 |
| 5463299 | Current controller for controlling a current flowing in a load using a PWM inverter and method used thereby | Motoo Futami, Yasuo Notohara, Tooru Kitayama | 1995-10-31 |
| 5381584 | Vacuum cleaner | Fumio Jyoraku, Hisao Suka, Yoshitaro Ishii, Hisanori Toyoshima, Mitsuhisa Kawamata +6 more | 1995-01-17 |
| RE34286 | Method and apparatus for operating vacuum cleaner | Hisanori Toyoshima, Fumio Jyoraku, Yoshitaro Ishii, Kazuo Tahara, Haruo Koharagi +4 more | 1993-06-22 |
| 5184057 | Control method and device for AC motor | Keijiro Sakai, Yuzuru Kubota, Takashi Ikimi, Nobuyoshi Mutoh, Mitsuyuki Honbu | 1993-02-02 |
| 4980617 | Speed control apparatus of movable equipment | Fumio Tajima, Hiroshi Katayama, Kunio Miyashita, Seiichi Narushima, Jun Ohya +1 more | 1990-12-25 |
| 4958406 | Method and apparatus for operating vacuum cleaner | Hisanori Toyoshima, Fumio Jyoraku, Yoshitaro Ishii, Kazuo Tahara, Haruo Koharagi +4 more | 1990-09-25 |
| 4879502 | Speed control apparatus and method for motors | Nobuaki KATO, Kenichi Iizuka, Fumio Tajima | 1989-11-07 |
| 4726738 | Motor-driven compressor provided with torque control device | Yozo Nakamura, Naoyuki Tanaka, Shigeru Machida, Akira Arai, Yoshihisa Uneyama +4 more | 1988-02-23 |