Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5534389 | Processing method of black-and-white light-sensitive silver halide photographic material and processing agent for the same | Takeo Arai, Tadashi Sekiguchi, Takeshi Habu, Hiroyuki Usiroyama, Kenichi Tanaka +1 more | 1996-07-09 |
| 5252448 | Silver halide photographic light sensitive material comprising at least one protective layer containing boron nitride particles | Noriyasu Kita, Takashi Shinkai | 1993-10-12 |