Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4641951 | Method and apparatus for electrophotographically reproducing a desired portion of an original on copying paper | Kenjiro Tanabe, Masao Fukushima, Hiroki Kyushima, Kiyoshi Takenaka, Akira Okada +1 more | 1987-02-10 |
| 4525065 | Method for controlling an exposure time in consideration of the reciprocity law failure of a photosensitive material | Hiroyuki Yonehara | 1985-06-25 |
| 4488804 | Method and machine for automatic focusing in a projection system with continuously variable magnification | — | 1984-12-18 |
| 4444506 | Method and apparatus for correcting the reciprocity law failure of a photosensitive material | Koichi Isono | 1984-04-24 |
| 4375918 | Color correction apparatus for a duplicate camera | Koichi Isono | 1983-03-08 |