Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34409 | Drive circuit for surface-wave driven motor utilizing ultrasonic vibration | Kazuo Hakamata, Tadao Takagi | 1993-10-19 |
| 4510411 | Drive circuit for surface-wave driven motor utilizing ultrasonic vibration | Kazuo Hakamata, Tadao Takagi | 1985-04-09 |
| 4318603 | Film rewind device in a camera | Koichi Daitoku, Hatsuo Sakamoto, Nobuhiko Terui, Toshiaki Hozumi, Yoshio Sekine +7 more | 1982-03-09 |