Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871645 | Positive-working photoresist composition | Kazuya Uenishi, Tadayoshi Kokubo | 1989-10-03 |
| 4863828 | Positive-working o-quinone diazide photoresist composition | Kazuya Uenishi, Tadayoshi Kokubo | 1989-09-05 |