Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4217407 | Light-sensitive O-quinone diazide containing copying material | Masaru Watanabe, Azusa Ohashi | 1980-08-12 |
| 4207106 | Positive working O-quinone diazide photocopying process with organic resin overlayer | Masaru Odawara, Azusa Ohashi | 1980-06-10 |
| 4197128 | Light-sensitive O-quinone diazide containing copying material | Masaru Watanabe, Azusa Ohashi | 1980-04-08 |