Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5371616 | Tonal conversion method of a picture | Iwao Numakura | 1994-12-06 |
| 5357349 | Tonal conversion method for a picture | Iwao Numakura | 1994-10-18 |
| 5313310 | Tonal conversion method for pictures | Iwao Numakura | 1994-05-17 |