Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873181 | Silver halide photographic material | Shuzo Suga | 1989-10-10 |
| 4859576 | Silver halide photographic material comprising a protective layer containing a polyoxyethylene surface active agent | Shigeki Yokoyama, Shuzo Suga, Takashi Naoi, Masaki Satake | 1989-08-22 |
| 4853323 | Silver halide emulsion | Hideo Ikeda, Shuzo Suga | 1989-08-01 |
| 4818675 | Silver halide photographic light sensitive material with improved silver blackness of picture image | Hideo Ikeda, Minoru Sakai, Shigeru Ohno, Yasuo Mukunoki | 1989-04-04 |