Issued Patents All Time
Showing 1–25 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8847585 | Magnetic absolute encoder and motor | Tsukasa Koto, Toshiki Maruyama, Yuki Kato | 2014-09-30 |
| 8400096 | Magnetic encoder and actuator | Toshiki Maruyama, Tsukasa Koto | 2013-03-19 |
| 8368392 | Magnetic encoder and method of detecting absolute rotational position | Muneo Mitamura, Junji Koyama | 2013-02-05 |
| 8159096 | Apparatus for detecting position of rotation of motor | Shunichi Tezuka, Junji Koyama | 2012-04-17 |
| 7994749 | Multiple-rotation absolute-value encoder of geared motor | Junji Koyama, Muneo Mitamura, Yasuo Sawamura | 2011-08-09 |
| 7498914 | Method for magnetizing ring magnet and magnetic encoder | Junji Koyama, Muneo Mitamura, Yasuo Sawamura | 2009-03-03 |
| 7375487 | Geared motor | Junji Koyama, Muneo Mitamura, Yasuo Sawamura | 2008-05-20 |
| 7196442 | Motor encoder | Junji Koyama | 2007-03-27 |
| 7023203 | Absolute magnetic encoder | Junji Koyama, Muneo Mitamura | 2006-04-04 |
| 6817267 | Actuator having a wave gear reduction drive | Yukitoshi Kobayashi, Toshiki Maruyama, Yoshikazu Yajima | 2004-11-16 |
| 6665102 | Galvanometer-type scanner | Toshiki Maruyama, Nozomu Tanioka, Akira Akahane | 2003-12-16 |
| 5381584 | Vacuum cleaner | Fumio Jyoraku, Hisao Suka, Yoshitaro Ishii, Hisanori Toyoshima, Mitsuhisa Kawamata +6 more | 1995-01-17 |
| 5294872 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Yoshitaro Ishii, Fumio Jyoraku +5 more | 1994-03-15 |
| RE34443 | Apparatus magnetically detecting position or speed of moving body utilizing bridge circuit with series connected MR elements | Tadashi Takahashi, Seizi Yamashita, Syooichi Kawamata | 1993-11-16 |
| 5243732 | Vacuum cleaner with fuzzy logic control | Haruo Koharagi, Kazuo Tahara, Toshiyuki Ajima, Tsunehiro Endo, Hisao Suka +8 more | 1993-09-14 |
| 5239490 | Device for detecting rotation of rotary shaft and rotation controlling apparatus using the same | Ryoso Masaki, Toshiyuki Koterazawa, Kazuo Tahara, Yoshikazu Hoshi, Tadashi Takahashi +1 more | 1993-08-24 |
| RE34355 | Magneto resistive sensor for detecting movement of a rotating body | Tadashi Takahashi, Hiroshi Nishida, Sadao Sekizawa | 1993-08-24 |
| 5231344 | Control apparatus for electric generator | Katsuji Marumoto, Kazuo Tahara, Keiichi Mashino, Atsushi Kanke, Akihiro Saito | 1993-07-27 |
| RE34286 | Method and apparatus for operating vacuum cleaner | Hisanori Toyoshima, Fumio Jyoraku, Yoshitaro Ishii, Kazuo Tahara, Haruo Koharagi +4 more | 1993-06-22 |
| 5166585 | Motor control apparatus for an electric vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Yoshitaro Ishii, Fumio Jyoraku +5 more | 1992-11-24 |
| 5101148 | Electric motor actuator | Seizi Yamashita, Hironori Okuda | 1992-03-31 |
| 5075607 | Method and apparatus for operating vacuum cleaner | Haruo Koharagi, Kazuo Tahara, Tsunehiro Endo, Yoshitaro Ishii, Fumio Jyoraku +5 more | 1991-12-24 |
| 5038065 | Permanent magnet reversible synchronous motor | Jun Matsubayashi, Fumio Tajima, Kazuaki Takada, Kuniaki Kubokura, Eiji Toyoda | 1991-08-06 |
| 5023924 | Speed control apparatus for movable equipment | Fumio Tajima, Hiroshi Katayama, Shigeki Morinaga, Seiichi Narushima | 1991-06-11 |
| 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 |