Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4789618 | Silver halide photographic material and very high contrast negative image-forming process using same | Senzo Sasaoka, Toshiro Takahashi | 1988-12-06 |
| 4777113 | Silver halide photographic material containing a silica containing overlayer and specific hydrazine derivatives | Senzo Sasaoka, Tomoo Murakami | 1988-10-11 |
| 4756995 | Direct reversal silver halide photographic light-sensitive material | Tetsuro Kojima, Tadashi Ikeda | 1988-07-12 |
| 4755449 | Silver halide photographic material and method for forming super high contrast negative images therewith | Senzo Sasaoka | 1988-07-05 |
| 4737452 | Silver halide photographic materials | Kimitaka Kameoka, Yoshio Inagaki, Hidetoshi Kobayashi, Toshiro Takahashi | 1988-04-12 |
| 4737442 | Silver halide photographic material and super-high contrast negative image formation process using the same | Morio Yagihara, Tetunori Matusita | 1988-04-12 |
| 4722884 | Silver halide photographic light-sensitive materials and method for formation of negative images of ultra-high contrast using said material | Senzo Sasaoka, Kenichi Kuwabara, Kimitaka Kameoka | 1988-02-02 |
| 4681836 | Silver halide photographic material and method for forming high contrast negative image using the same | Yoshio Inagaki, Kimitaka Kameoka | 1987-07-21 |
| 4539291 | Direct positive silver halide photographic materials | Hiroyuki Mifune, Koki Nakamura | 1985-09-03 |
| 4377635 | Photographic light-sensitive material | Hiroyuki Mifune, Yoshiharu Fuseya | 1983-03-22 |
| 4268622 | Photographic light-sensitive materials having dyed layers | Keiichi Adachi, Eiichi Kato, Tetsurou Kojima | 1981-05-19 |