Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883739 | Light-sensitive resin composition with 1,2-naphthoquinone diazide compound having spirobichroman or spirobiinoane ring | Shinji Sakaguchi | 1989-11-28 |
ST
Shiro Tan
Overall (1989): #56,711 of 140,708Top 45%
1
Patents 1989