Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884866 | Fluorine-containing resin composition having low refractive index | Yutaka Hashimoto, Toshihiko Umaba | 1989-12-05 |
| 4822713 | Light-sensitive composition with fluorine containing acrylate or methacrylate copolymer surfactant | Akira Nishioka, Toshihiko Umaba | 1989-04-18 |