Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890148 | Semiconductor memory cell device with thick insulative layer | Shuji Ikeda, Kouichi Nagasawa, Sho Yamamoto | 1989-12-26 |
| 4853894 | Static random-access memory having multilevel conductive layer | Toshiaki Yamanaka, Norio Suzuki, Yoshio Sakai, Yoshifumi Kawamoto, Osamu Minato +2 more | 1989-08-01 |
| 4841481 | Semiconductor memory device | Shuji Ikeda, Kotaro Nishimura, Sho Yamamoto, Nobuyoshi Tanimura | 1989-06-20 |
| 4828629 | Process of fabricating silicon oxide and gettering films on polycrystalline silicon resistance element | Shuji Ikeda | 1989-05-09 |
| 4818716 | Semiconductor device and manufacturing method thereof | Kousuke Okuyama, Ken Uchida, Kouichi Kusuyama, Hisao Katto, Kazuhiro Komori | 1989-04-04 |
| 4805143 | Read-only memory | Youichi Matsumoto, Ryuuji Shibata, Isamu Kobayashi, Kouichi Nagasawa, Hideo Meguro +4 more | 1989-02-14 |