Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5663034 | Silver halide recording material for making negative images having ultrahigh contrast | — | 1997-09-02 |
| 5637439 | Photographic silver halide photosensitive material and method for developing the same | Satoshi Kaneko, Kenji Hirata, Akira Tanaka | 1997-06-10 |