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