Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5250392 | Process of developing a negative-working radiation-sensitive photoresist containing cyclized rubber polymer and contrast enhancing azo dye | John Griffiths | 1993-10-05 |
| 5206110 | Negative-working radiation-sensitive mixtures containing cyclized rubber polymer and contrast enhancing azo dye | John Griffiths | 1993-04-27 |
| 4828965 | Aqueous developing solution and its use in developing positive-working photoresist composition | Richard James West, Faris Modawar | 1989-05-09 |