Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882289 | Method of making a semiconductor memory device with recessed array region | Noboru Moriuchi, Yoshiki Yamaguchi, Toshihiko Tanaka, Norio Hasegawa, Shin Kimura +2 more | 1989-11-21 |
| 4873203 | Method for formation of insulation film on silicon buried in trench | Toru Kaga, Shinichiro Kimura, Tokuo Kure, Hideo Sunami | 1989-10-10 |
| 4853894 | Static random-access memory having multilevel conductive layer | Toshiaki Yamanaka, Norio Suzuki, Yoshio Sakai, Osamu Minato, Koichiro Ishibashi +2 more | 1989-08-01 |