Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873173 | Method of forming image providing a change in sensitivity by altering the pH of the developer | Tetsuo Yoshida, Nobuaki Inoue | 1989-10-10 |
| 4849319 | Silver halide photographic light-sensitive material and method of forming super-high contrast negative image using the photographic material | Nobuaki Inoue, Hiroshi Hayashi | 1989-07-18 |
| 4839259 | Silver halide photographic material and method for forming an image using the same | Nobuaki Inoue, Eiichi Okutsu | 1989-06-13 |
| 4824774 | Silver halide photographic material and method for forming an ultrahigh contrast negative image therewith | Nobuaki Inoue | 1989-04-25 |