Issued Patents 1989
Showing 1–6 of 6 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, Yoshifumi Kawamoto +2 more | 1989-11-21 |
| 4873203 | Method for formation of insulation film on silicon buried in trench | Toru Kaga, Shinichiro Kimura, Yoshifumi Kawamoto, Hideo Sunami | 1989-10-10 |
| 4860071 | Semiconductor memory using trench capacitor | Hideo Sunami, Atsushi Hiraiwa, Yasuo Wada | 1989-08-22 |
| 4829361 | Semiconductor device | Kazuhiko Sagara, Tohru Nakamura, Kazuo Nakazato, Kiyoji Ikeda, Noriyuki Homma | 1989-05-09 |
| 4825281 | Bipolar transistor with sidewall bare contact structure | Kazuo Nakazato, Tohru Nakamura, Masatoshi Matsuda, Takao Miyazaki, Takahiro Okabe +1 more | 1989-04-25 |
| 4812894 | Semiconductor device | Tohru Nakamura, Kazuo Nakazato, Noriyuki Homma, Kazuhiko Sagara, Takeo Shiba +1 more | 1989-03-14 |