Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860272 | Erroneous track jump restoration apparatus for optical record disc player | Meisei Nishikawa, Jun Inagawa, Toshihiko Kaneshige, Yasuhiro Hayashi, Tadashi Kojima | 1989-08-22 |
| 4797184 | Process for producing 7,7,8,8-tetracyanoquinodimethane | Tomio Nakamura, Katsuaki Kikuchi | 1989-01-10 |