Issued Patents All Time
Showing 51–68 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4925738 | Substrate for a magnetic disk and process for its production | Noboru Tsuya, Tadao Tokushima | 1990-05-15 |
| 4879204 | Silver halide photographic element containing anhydazine compound and specific dyes | Kunio Ishigaki, Yuji Mihara, Keiichi Adachi, Shigeru Ohno, Masahiro Okada +1 more | 1989-11-07 |
| 4847180 | Silver halide photographic material capable of being handled in a bright room during steps of photomechanical process | Junji Miyata, Ken-ichi Kuwabara, Yoshio Inagaki, Shigeo Hirano | 1989-07-11 |
| 4830950 | Silver halide photographic material | Kenichi Kuwabara, Keiichi Adachi, Masahiro Okada | 1989-05-16 |
| 4818659 | Silver halide photographic materials for photochemical process which can be used in a bright room | Ken-ichi Kuwabara, Kimitaka Kameoka, Masahiro Okada | 1989-04-04 |
| 4803149 | Silver halide photographic materials | Ken-ichi Kuwabara, Masahiro Okada | 1989-02-07 |
| 4789618 | Silver halide photographic material and very high contrast negative image-forming process using same | Nobuaki Inoue, Senzo Sasaoka | 1988-12-06 |
| 4762769 | Silver halide photographic material | Ken-ichi Kuwabara, Masahiro Okada | 1988-08-09 |
| 4740453 | Silver halide photosensitive material containing a compound capable of releasing a photographically useful group | Koki Nakamura, Shigeo Hirano, Tadashi Ikeda, Keiji Mihayashi, Mitsunori Ono +3 more | 1988-04-26 |
| 4737452 | Silver halide photographic materials | Kimitaka Kameoka, Nobuaki Inoue, Yoshio Inagaki, Hidetoshi Kobayashi | 1988-04-12 |
| 4699873 | Negative silver halide photographic light-sensitive material | Shigeo Hirano | 1987-10-13 |
| 4681669 | Method for producing magnetic recording media | Tadao Tokushima, Yoshifumi Suzuki, Yukio Wakui | 1987-07-21 |
| 4680540 | Device for measuring average frequencies | Shoji Niki, Yohei Hirakoso | 1987-07-14 |
| 4650708 | Magnetic recording material and a method for producing the same | — | 1987-03-17 |
| 4636456 | Process for forming a photographic image | Koki Nakamura | 1987-01-13 |
| 4518682 | Silver halide photographic light-sensitive material | Hidetoshi Kobayashi, Shigeo Hirano, Takeshi Hirose, Keiichi Adachi | 1985-05-21 |
| 4468614 | Average frequency measuring apparatus | Shoji Niki | 1984-08-28 |
| 4184927 | Process and apparatus for effecting surface treatment of workpieces | Masashi Ikegaya | 1980-01-22 |