Issued Patents All Time
Showing 1–25 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8127898 | Brake device and motor with speed reducing mechanism | Hiroaki Yamamoto, Hidenori Ishihara, Tomoki Yamashita, Nakatsune Shirai, Katsumi Endo | 2012-03-06 |
| 7678988 | Musical tone apparatus | Takuya Sato, Koji Yoshida | 2010-03-16 |
| 7649297 | Commutator, direct-current motor, and method for manufacturing commutator | Hidenori Ishihara, Hideyuki Suzuki, Hiroaki Yamamoto, Tomoki Yamashita | 2010-01-19 |
| 7298062 | Motor, control circuit member and manufacturing method of motor | Hiroshi Kokubu, Tatsuya Suzuki, Kazutaka Sakohira | 2007-11-20 |
| 7187095 | Motor, control circuit member and manufacturing method of motor | Hiroshi Kokubu, Tatsuya Suzuki, Kazutaka Sakohira | 2007-03-06 |
| 6916980 | Acoustic control system for electronic musical instrument | Tadayuki Ishida | 2005-07-12 |
| 6789443 | Driving apparatus equipped with motor and decelerating mechanism | Hiroaki Yamamoto, Shinji Oka | 2004-09-14 |
| 6787953 | Motor having circuit board | — | 2004-09-07 |
| 6707188 | Motor having rotational sensor | Kengo Yamamura, Hiroaki Yamamoto, Naoki Imamura | 2004-03-16 |
| 6700269 | Direct current motor yoke housing having groove-like reduced thickness portions | Kengo Yamamura, Hiroaki Yamamoto | 2004-03-02 |
| 6628026 | Geared motor including ribbed gear housing | Hiroaki Yamamoto | 2003-09-30 |
| 6591707 | Geared motor having worm wheel drivingly connected to output shaft | Tadashi Adachi, Hirofumi Sakai, Shingo Omori | 2003-07-15 |
| 6575277 | Clutch and drive device having the clutch | Hiroaki Yamamoto, Shinji Oka | 2003-06-10 |
| 6573625 | Motor device having water-proof brush holder | Fumihiro Shimizu, Hiroaki Yamamoto, Kenji Kashima, Kengo Yamamura | 2003-06-03 |
| 6528708 | Exterior structure for electronic keyboard instrument | Keiji Konishi, Takahiro Tajima, Tadayuki Ishida | 2003-03-04 |
| 6481550 | Motor having clutch provided with stopper | Hiroaki Yamamoto, Hirofumi Sakai, Kengo Yamamura, Tadashi Adachi | 2002-11-19 |
| 6479742 | Audio system in electronic musical instrument | Tadashi Yasuda | 2002-11-12 |
| 6463829 | Geared motor having a reinforced gear housing | Hiroaki Yamamoto | 2002-10-15 |
| 6450056 | Motor having speed reduction device | Hiroaki Yamamoto | 2002-09-17 |
| 6452296 | Motor device and transmission mechanism | Hiroaki Yamamoto, Manabu Kato | 2002-09-17 |
| 6437230 | Effector apparatus in electronic musical instrument | Akira Murata | 2002-08-20 |
| 6390264 | Clutch and motor including such clutch | Hiroaki Yamamoto, Tadashi Adachi | 2002-05-21 |
| 6382384 | Clutch having reduced noise level and motor including such clutch | Hiroaki Yamamoto | 2002-05-07 |
| 6288464 | Motor having worm gear mechanism | Keiji Inoue, Hiroaki Yamamoto | 2001-09-11 |
| 6242824 | Motor and manufacturing method thereof | Hiroaki Yamamoto | 2001-06-05 |