Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885628 | Semiconductor integrated circuit device | Yasuo Nagai, Isao Shimizu, Masatoshi Kimura, Kenji Kaneko, Koozoo Sakamoto | 1989-12-05 |
| 4831424 | Insulated gate semiconductor device with back-to-back diodes | Isao Yoshida, Mitsuo Ito, Kazutoshi Ashikawa, Tetsuo Iijima | 1989-05-16 |
| 4817066 | Transmitter/receiver for ultrasonic diagnostic system | Wasao Takasugi, Ryuichi Shinomura | 1989-03-28 |
| 4814288 | Method of fabricating semiconductor devices which include vertical elements and control elements | Masatoshi Kimura, Isao Yoshida, Kouzou Sakamoto, Kazuo Hoya, Kouichiro Satonaka +2 more | 1989-03-21 |