Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5183722 | Positive photosensitive composition for forming lenses containing 1,2-naphthoquinone diazide sulfonate photosensitizer, alkali-soluble resin and thermosetting agent and process for producing the composition | Yoshitaka Tsutsumi, Masazumi Hasegawa | 1993-02-02 |