Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889757 | Optical recording disk | Shinkichi Horigome, Toshio Niihara, Norio Ohta, Yutaka Sugita, Yoshinori Miyamura +2 more | 1989-12-26 |
| 4866338 | Unsaturated polyester resin composition for cathode ray tube and its use | Toshimasa Ishigaki, Yasuhiko Uehara, Fusaji Shoji, Etsuji Iwami, Hirohumi Izumi | 1989-09-12 |
| 4835027 | Optical disc | Hiroaki Miwa, Tetsuo Tajima, Shinkichi Horigome | 1989-05-30 |
| 4812346 | Optical disc base plate and process for producing the same | Hiroaki Miwa, Tetsuo Tajima | 1989-03-14 |