Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874808 | Cycloolefin type random copolymer compositions and uses thereof | Syuji Minami, Keiji Kawamoto, Tetsuji Kasai, Toshiaki Kuroiwa | 1989-10-17 |
| 4834819 | Process for producing information recording discs | Toshio Kimura, Masayoshi Kurisu | 1989-05-30 |