Issued Patents 1989
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888268 | Silver halide photographic materials comprising blocked photographic reagants releasing plug groups | Isamu Itoh, Mitsunori Ono | 1989-12-19 |
| 4885228 | Optical information recording medium | Keiichi Adachi, Yoshiaki Suzuki | 1989-12-05 |
| 4865947 | Silver halide photographic material | Kenichi Kuwabara | 1989-09-12 |
| 4853328 | Reagent for assaying hydrogen peroxide and method of quantitative assay for hydrogen peroxide | Masaki Okazaki | 1989-08-01 |
| 4851322 | Optical recording medium | Takanori Hioki, Naonori Makino, Keiichi Adachi, Yoshiaki Suzuki | 1989-07-25 |
| 4847180 | Silver halide photographic material capable of being handled in a bright room during steps of photomechanical process | Junji Miyata, Ken-ichi Kuwabara, Toshiro Takahashi, Shigeo Hirano | 1989-07-11 |
| 4840862 | Photoconductive composition having an azaazulenium salt | Naonori Makino, Takanori Hioki, Seiji Horie | 1989-06-20 |
| 4833246 | Novel pyrazolone dye | Keiichi Adachi, Shigeru Ohno, Nobuo Seto, Yoshihiro Jinbo | 1989-05-23 |
| 4832992 | Process for the preparation of information recording medium | Masao Yabe | 1989-05-23 |
| 4824764 | Silver halide photographic material | Nobuaki Inoue | 1989-04-25 |
| 4822891 | 4-amino-2,3-di-substituted-1-(mono- or trichlorophenyl)-3-pyrazolin-5-ones | Tadao Shishido | 1989-04-18 |
| 4797476 | Mono-4-arylazoaryl phosphoric esters | Masaki Okazaki | 1989-01-10 |