Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857137 | Process for surface treatment | Shinichi Tachi, Sadayuki Okudaira, Kazunori Tsujimoto | 1989-08-15 |
| 4842891 | Method of forming a copper film by chemical vapor deposition | Hiroshi Miyazaki, Yoshio Homma | 1989-06-27 |
| 4809052 | Semiconductor memory device | Yasushiro Nishioka, Takeo Shiba, Hiroshi Shinriki, Akihisa Uchida, Ichiro Mitamura +4 more | 1989-02-28 |