Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884879 | Lens system for projection television receivers | Kyohei Fukuda, Soichi Sakurai, Koji Hirata | 1989-12-05 |
| 4870620 | Dynamic random access memory device with internal refresh | Tadato Yamagata, Hiroshi Miyamoto, Michihiro Yamada, Tetsuya Aono | 1989-09-26 |
| 4868063 | Glass fiber article-coating compositions | Yoshio Okamura, Kimitaka Kumagae, Hideyuki Itoh | 1989-09-19 |
| 4842753 | Silicone grease composition | Toshikazu Sugita | 1989-06-27 |
| 4840739 | Adhesive grease composition comprising a random copolymer of ethylene and an alpha-olefin | Takayuki Takahashi | 1989-06-20 |
| 4824224 | Lens system for a cathode ray tube projection system | Kyohei Fukuda, Hiroki Yoshikawa, Koji Hirata, Soichi Sakurai | 1989-04-25 |