Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873173 | Method of forming image providing a change in sensitivity by altering the pH of the developer | Senzo Sasaoka, Tetsuo Yoshida | 1989-10-10 |
| 4850238 | Shiftlever mechanism for an automatic transmission | — | 1989-07-25 |
| 4849319 | Silver halide photographic light-sensitive material and method of forming super-high contrast negative image using the photographic material | Senzo Sasaoka, Hiroshi Hayashi | 1989-07-18 |
| 4839259 | Silver halide photographic material and method for forming an image using the same | Senzo Sasaoka, Eiichi Okutsu | 1989-06-13 |
| 4824774 | Silver halide photographic material and method for forming an ultrahigh contrast negative image therewith | Senzo Sasaoka | 1989-04-25 |
| 4824764 | Silver halide photographic material | Yoshio Inagaki | 1989-04-25 |
| 4820625 | Direct positive silver halide photographic material | Naomi Saeki, Toshinao Ukai, Yuji Mihara | 1989-04-11 |