Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9185296 | Optical unit with shake correcting function | Tatsuki Wade, Shinroku Asakawa, Shinji Minamisawa, Toshiyuki Karasawa, Katsushige Yanagisawa +3 more | 2015-11-10 |
| 9049375 | Optical unit with shake correcting function | Tatsuki Wade, Shinroku Asakawa, Shinji Minamisawa, Toshiyuki Karasawa, Katsushige Yanagisawa +3 more | 2015-06-02 |
| 8687953 | Photographic optical device, photographic optical system and distance variation amount detecting device | Toshiyuki Karasawa, Ryoji Komatsu, Hisahiro Ishihara | 2014-04-01 |
| 6791824 | Tape running apparatus, motor board, and capstan motor | Satoshi Tanimura, Izumi Komatsu, Nobuki Kokubo | 2004-09-14 |
| 6713979 | Actuator drive circuit | Noriaki Okada, Kazuhiko Saito | 2004-03-30 |
| 6552505 | Method for driving motors and apparatus for driving motors | — | 2003-04-22 |
| 6528916 | Brushless motor | Satoshi Tanimura, Izumi Komatsu | 2003-03-04 |
| 6495938 | Brushless motor, method for operating brushless motor and method for manufacturing brushless motor | Izumi Komatsu, Satohi Tanimura | 2002-12-17 |
| 5761375 | Brushless motor speed detection device | — | 1998-06-02 |
| 5689181 | Brushless motor speed detecting apparatus for reducing generation of spike voltage | Nobuki Kokubo | 1997-11-18 |
| 5686770 | Position detector of a brushless motor | — | 1997-11-11 |
| 5644203 | Brushless motor speed detector | Isao Uchikoshi | 1997-07-01 |
| 5552964 | Switch mounted on circuit board and method of mounting switch on circuit board | — | 1996-09-03 |
| 5483162 | Magnetic detector for a frequency generator responsive to motor rotation | Isao Ushikoshi | 1996-01-09 |
| 5378967 | Brushless motor drive circuit | — | 1995-01-03 |
| 5373252 | Circuit for preventing saturation of a transistor | — | 1994-12-13 |
| 5331259 | Brushless motor drive circuit | — | 1994-07-19 |
| 5237247 | Three-phase sine wave signal synthesizing circuit and brushless motor drive circuit using the same | — | 1993-08-17 |
| 5196771 | Brushless motor drive circuit | — | 1993-03-23 |
| 5173645 | Brushless motor drive circuit | — | 1992-12-22 |
| 5155419 | Brushless motor drive circuit having a highly accurate sinusoidal output signal | — | 1992-10-13 |
| 5140232 | Brushless motor drive circuit | — | 1992-08-18 |
| 4658190 | Reduced ripple drive circuit for a brushless motor | Kiyoshi Miyazaki, Jinichi Ito | 1987-04-14 |