Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870698 | Output power control circuit for a mobile radio apparatus | Tsutomu Katsuyama, Toyoo Kanai, Yasunobu Taguchi | 1989-09-26 |
| 4831424 | Insulated gate semiconductor device with back-to-back diodes | Takeaki Okabe, Mitsuo Ito, Kazutoshi Ashikawa, Tetsuo Iijima | 1989-05-16 |
| 4814288 | Method of fabricating semiconductor devices which include vertical elements and control elements | Masatoshi Kimura, Takeaki Okabe, Kouzou Sakamoto, Kazuo Hoya, Kouichiro Satonaka +2 more | 1989-03-21 |