Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5766833 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor | Kiyoshi Suematsu, Haruhiko Kaji, Naoki Obi, Yasuhiko Kojima, Yasuo Shigemitsu | 1998-06-16 |
| 5683854 | Process of forming super high-contrast negative images and silver halide photographic material and developer being used therefor | Kiyoshi Suematsu, Haruhiko Kaji, Naoki Obi, Yasuhiko Kojima, Yasuo Shigemitsu | 1997-11-04 |