Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6581666 | Operating device for window openers, screening arrangements and similar devices | Niels Bartholin | 2003-06-24 |
| 5841897 | Method for the tonal control or adjustment of reproduced color image and picture producing system making use of said method | Takashi Numakura, Iwao Numakura | 1998-11-24 |
| 4956718 | Tonal conversion method for pictures | Takashi Numakura, Junichi Naya, Iwao Numakura | 1990-09-11 |
| 4833546 | Photomechanical apparatus | Takashi Numakura, Iwao Numakura | 1989-05-23 |
| 4811108 | Tonal conversion method for pictures | Takashi Numakura, Iwao Numakura | 1989-03-07 |