Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371616 | Tonal conversion method of a picture | Takashi Numakura | 1994-12-06 |
| 5357349 | Tonal conversion method for a picture | Takashi Numakura | 1994-10-18 |
| 5313310 | Tonal conversion method for pictures | Takashi Numakura | 1994-05-17 |
| 5286609 | Process for the formation of a negative resist pattern from a composition comprising a diazoquinone compound and an imidazole and having as a heat step the use of a hot water containing spray | — | 1994-02-15 |