Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5793494 | CRT display device | Tomohiko Douken, Isao Kizuya | 1998-08-11 |
| 5631517 | Ultrasonic motor and driving for the ultrasonic motor | Kazuo Kato, Takashi Sase, Shuzo Oshima, Muneo Chiba, Tomohiko Douken +1 more | 1997-05-20 |
| 5448140 | Image display apparatus with a deflection circuit having function for correcting rotational distortion | Tomohiko Douken | 1995-09-05 |
| 5329211 | CRT display unit | Kazuyoshi Sasaki | 1994-07-12 |