Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4950405 | Functional thin organic membrane | Yukio Maekawa, Hisashi Okamura | 1990-08-21 |
| 4908303 | Silver halide photographic materials spectrally sensitized with luminous dye | Tadaaki Tani, Tadao Sugimoto | 1990-03-13 |
| 4876183 | Tubular silver halide photosensitive materials sensitized with a luminous dye | Masaki Okazaki, Tadao Sugimoto | 1989-10-24 |
| 4820606 | Silver halide photographic material | Masaki Okazaki, Tadao Sugimoto | 1989-04-11 |
| 4719174 | Direct positive silver halide photographic light-sensitive material depress formation of re-reversed negative image | Shigeo Hirano, Shinsaku Fujita | 1988-01-12 |
| 4607006 | Silver halide photographic light-sensitive material containing non-spectral sensitizing electron donative silver halide adsorptive compound | Shigeo Hirano, Yasuhisa Sano, Haruo Takei, Shinsaku Fujita | 1986-08-19 |
| 4550070 | Direct positive silver halide photographic light-sensitive materials | Hidetoshi Kobayashi, Isamu Itoh, Shigeo Hirano | 1985-10-29 |