Issued Patents All Time
Showing 76–99 of 99 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4965170 | Silver halide photographic material and method for forming super high contrast images therewith | Toshinao Ukai, Kazuhiro Shirasu, Koki Nakamura, Keizo Koya, Masahiro Okada | 1990-10-23 |
| 4960672 | Silver halide photographic material | Hisashi Okada | 1990-10-02 |
| 4956263 | Silver halide photographic material containing a compound capable of releasing a dye | Kunio Ishigaki, Nobuaki Inoue, Hisashi Okada, Toshinao Ukai, Morio Yagihara +2 more | 1990-09-11 |
| 4952484 | Silver halide photographic material | Keiichi Adachi | 1990-08-28 |
| 4950578 | Silver halide photographic material | Morio Yagihara | 1990-08-21 |
| 4923789 | Silver halide photographic material | Morio Yagihara, Tetunori Matushita, Toshinao Ukai | 1990-05-08 |
| 4908293 | Superhigh contrast negative type silver halide photographic material | Yoshihiro Takagi, Kimitaka Kameoka, Junji Miyata, Toshinao Ukai | 1990-03-13 |
| 4851321 | Superhigh contrast negative-type silver halide photographic material | Yoshihiro Takagi, Hisashi Okada, Morio Yagihara | 1989-07-25 |
| 4839258 | Super-high contrast negative type photographic material containing hydrazine and a reductone | — | 1989-06-13 |
| 4800150 | Super-high contrast negative type photographic material | — | 1989-01-24 |
| 4761362 | Processing a photographic material comprising an emulsion layer providing a contrast gradation and another layer providing a soft tone gradation | Senzo Sasaoka, Shigenori Moriuchi, Kimitaka Kameoka, Yoshio Inagaki | 1988-08-02 |
| 4755448 | Silver halide photographic material and method for forming super high contrast negative images therewith | — | 1988-07-05 |
| 4701400 | Silver salt diffusion transfer photographic element with cationic polymer | — | 1987-10-20 |
| 4689287 | Photographic element for silver salt diffusion transfer process with I ion capturing layer | Hideki Takaki | 1987-08-25 |
| 4629677 | Element for diffusion transfer with stripping layer of crosslinked polymer from ethenically unsaturated carboxylic acid or salt thereof | — | 1986-12-16 |
| 4614681 | Photographic support | Hiroshi Hayashi, Takashi Yoshida | 1986-09-30 |
| 4308335 | Color diffusion transfer photographic elements | Tatsuya Yamamoto | 1981-12-29 |
| 4292390 | Integral diffusion transfer photographic film unit | Teruyoshi Makino | 1981-09-29 |
| 4286042 | Light reflecting layer for color diffusion transfer photographic system | Nobuo Sakai, Hiroshi Hayashi, Masaharu Toriuchi | 1981-08-25 |
| 4255516 | Photographic support containing different polyester layers | Saburo Fujita, Toshihiro Otaki, Shozi Nakashima | 1981-03-10 |
| 4220703 | Photographic receiving layer with acid processed gelatin | — | 1980-09-02 |
| 4215030 | Photographic polyester film support | Tsutomu Okita, Masami Satou, Noburo Hibino, Hiroshi Sawaguchi | 1980-07-29 |
| 4199362 | Color diffusion transfer process photographic elements | Takashi Yoshida, Shinji Sakaguchi, Yukio Karino | 1980-04-22 |
| 4191679 | Photographic polyester film support | Tsutomu Okita, Masami Satou, Noburo Hibino, Masatoshi Sugiyama | 1980-03-04 |