Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5108783 | Process for producing semiconductor devices | Makoto Tanigawa, Keizo Sakiyama, Shigeo Ohnishi, Yoshimitsu Yamauchi, Kenichi Tanaka | 1992-04-28 |
| 5059550 | Method of forming an element isolating portion in a semiconductor device | Shigeo Onishi, Kenichi Tanaka | 1991-10-22 |
| 4916087 | Method of manufacturing a semiconductor device by filling and planarizing narrow and wide trenches | Shigeo Onishi, Masato Kawai | 1990-04-10 |