Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5998626 | Bisbenzazole compounds | — | 1999-12-07 |
| 5929235 | Aromatic tertiary amine compound having benzazepine structures | — | 1999-07-27 |
| 5734063 | 4-acylaminophenylacetylenealcohol compounds | Katsuyoshi Yamakawa | 1998-03-31 |
| 5693823 | Process for preparing 1,1-disubstituted-1H-benzoe!indole compound and hydroxyl-substituted compound thereof | Katsuyoshi Yamakawa | 1997-12-02 |
| 5672714 | Method of manufacturing a 3-substituted-3-oxo-2-halopropionic acid amide compound and method of manufacturing a 3-substituted-3-oxo-2-(5,5-dimethylhydantoin-3-yl) propionic acid amide compound | Katsuyoshi Yamakawa | 1997-09-30 |
| 5532377 | Photographic coupler and silver halide color photographic material | Yuki Mizukawa, Masuji Motoki, Osamu Takahashi | 1996-07-02 |
| 5521318 | Benzotriazolylacetyl compound | Katsuyoshi Yamakawa, Koichi Hanaki | 1996-05-28 |
| 5514532 | Silver halide color photographic material | Kei Sakanoue | 1996-05-07 |
| 5500334 | Silver halide color photographic material containing pyrazole-substituted couplers | Yuki Mizukawa, Hideaki Naruse, Toshiyuki Watanabe | 1996-03-19 |
| 5451501 | Photographic coupler and silver halide color photographic material | Yuki Mizukawa, Masuji Motoki, Osamu Takahashi | 1995-09-19 |
| 5409808 | Silver halide color photographic material | Yuki Mizukawa, Hideaki Naruse, Toshiyuki Watanabe | 1995-04-25 |
| 5300407 | Silver halide photographic material containing imidazopyrazole type coupler and image forming method using said coupler | Koshin Matsuoka | 1994-04-05 |
| 5272049 | Silver halide color photographic light-sensitive material and image forming method | Kei Sakanoue, Mamoru Sakurazawa | 1993-12-21 |
| 5270153 | Cyan image forming method and silver halide color photographic material containing cyan coupler | Makoto Suzuki, Kozo Sato, Yoshio Ishii | 1993-12-14 |
| 5256526 | Cyan image forming method and silver halide color photographic material containing cyan coupler | Makoto Suzuki, Kozo Sato, Yoshio Ishii, Hideaki Naruse, Yasuhiro Shimada | 1993-10-26 |
| 5242788 | Silver halide color photosensitive materials | Osamu Takahashi | 1993-09-07 |
| 5242789 | Process for forming color image | Nobuo Furutachi | 1993-09-07 |
| 5235058 | 3(5)-hydrazinopyrazole compounds | Keizo Kumura | 1993-08-10 |
| 5182339 | Pyrazoloazoleazomethine dyes | Shigeki Yokoyama, Keizo Kimura, Nobuo Furutachi, Osamu Takahashi | 1993-01-26 |
| 5155016 | Silver halide color photographic material containing novel pyrazoloazole coupler and method to produce color image | Yuki Mizukawa | 1992-10-13 |
| 5122612 | Process for producing 5-amino-4-halogeno-1H-pyrazole compounds | Yuki Mizukawa, Keizo Kimura | 1992-06-16 |
| 5118812 | Pyrazoloazole series couplers | Shigeki Yokoyama, Keizo Kimura, Nobuo Furutachi, Osamu Takahashi | 1992-06-02 |
| 5116990 | Magenta dye-forming coupler | Keizo Kimura | 1992-05-26 |
| 5110941 | Methods of producing 1H-pyraolo(5,1-c)-1,2,4-triazoles and pyrazole derivatives | Masato Taniguchi | 1992-05-05 |
| 5089651 | Process for producing 3-iminonitriles | Masato Taniguchi, Yuki Mizukawa | 1992-02-18 |