Issued Patents All Time
Showing 26–50 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5019776 | Magnetic position detection apparatus having two magnetic recording medium tracks with magnetoresistors arranged in a bridge circuit so as to eliminate even order harmonic distortion | Syooichi Kawamata, Tadashi Takahashi | 1991-05-28 |
| 4983895 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Yoshitaro Ishii, Fumio Jyoraku +5 more | 1991-01-08 |
| 4983893 | Actuator with stepping motion function | Hiroshi Hayashida, Tadashi Takahashi, Syooichi Kawamata | 1991-01-08 |
| 4980617 | Speed control apparatus of movable equipment | Fumio Tajima, Hiroshi Katayama, Tunehiro Endo, 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 |
| 4945268 | Permanent magnet type linear pulse motor | Hideki Nihei, Hideki Asano | 1990-07-31 |
| 4939435 | Torque detecting apparatus | Tadashi Takahashi, Syooichi Kawamata, Ryoosoo Masaki, Shigeru Kuriyama | 1990-07-03 |
| 4922175 | Position/speed detection method and apparatus | Yasuyuki Sugiura, Mitsuru Watabe, Shigeki Morinaga, Hiroshi Sugai | 1990-05-01 |
| 4918346 | Low ripple-torque permanent magnet brushless motor | Fumio Tajima, Nicolas Samman, Hiroshi Katayama, Motoya Ito, Seiichi Narushima +1 more | 1990-04-17 |
| 4914361 | Method and apparatus for controlling the speed of moving body | Fumio Tajima, Hiroshi Katayama, Seiichi Narushima, Kouichi Saito | 1990-04-03 |
| 4904937 | Apparatus for magnetically detecting positions with minimum length magnetic information units recorded on a plurality of magnetic tracks | Tadashi Takahashi, Syooichi Kawamata | 1990-02-27 |
| 4890024 | Low-speed high-torque motor | Ichiro Hashimoto, Kosho Ishizaki, Hiroshi Hayashida | 1989-12-26 |
| 4880474 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Yoshitaro Ishii, Fumio Jyoraku +5 more | 1989-11-14 |
| 4874053 | Torque detecting apparatus | Hiroshi Kimura, Shotaro Naito, Yasuo Noto, Noboru Sugiura, Tadashi Takahashi +5 more | 1989-10-17 |
| 4857786 | Structure of stepping motor and method of driving the stepping motor | Hideki Nihei, Kouichi Saitoh, Seizi Yamashita | 1989-08-15 |
| 4855652 | Speed control apparatus for a brushless direct current motor | Koujirou Yamashita, Stunehiro Endo, Susumu Kashiwazaki, Kenichi Iizuka | 1989-08-08 |
| 4818939 | Apparatus for magnetically detecting position or speed or moving body utilizing bridge circuit with series connected MR elements | Tadashi Takahashi, Seizi Yamashita, Syooichi Kawamata | 1989-04-04 |
| 4786870 | Magnetic sensor for magnetically detecting the position of a movable body | Syooichi Kawamata, Tadashi Takahashi | 1988-11-22 |
| 4766376 | Magnetic position detector for detecting an absolute position of a movable member | Tadashi Takahashi, Syouichi Kawamata | 1988-08-23 |
| 4713613 | Device for magnetically detecting displacement of non-magnetic movable member | Tadashi Takahashi, Syooichi Kawamata | 1987-12-15 |
| 4707695 | Magnetic position sensor | Tadashi Takahashi, Syooichi Kawamata | 1987-11-17 |
| 4694688 | Crank angle sensor | Tadashi Takahashi, Syooichi Kawamata | 1987-09-22 |
| 4678971 | Linear motor and control method thereof | Hiroshi Kanazawa, Seizi Yamashita | 1987-07-07 |
| 4677377 | Position-detecting sensor for detecting position of a moving object utilizing magnetism | Tadashi Takahashi, Syoichi Kawamata | 1987-06-30 |
| 4672253 | Permanent magnet electrical machine with reduced cogging | Fumio Tajima, Hiroshi Katayama, Teizo Tamura, Kenichi Hironaka, Takuro Kawano +3 more | 1987-06-09 |