Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5369862 | Method of producing a piezoelectric device | Kenichi Kotani, Mikio Nakajima, Yukio Yoshino, Toru Kasanami | 1994-12-06 |
| 5353884 | Positioning device for a member and drilling system employing said positioning device | Toshiaki Misawa, Yoshihide Kiyosawa, Jun Sakata | 1994-10-11 |
| 5316090 | Attitude control device and drilling-direction control device | Shoji Kuwana, Yoshihide Kiyosawa | 1994-05-31 |
| 5307885 | Attitude and drilling-direction control device | Shoji Kuwana, Yoshihide Kiyosawa | 1994-05-03 |