Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814260 | Method of storing photographic processing solution in a package having specific oxygen permeability | Shigeharu Koboshi, Masahiko Kon | 1989-03-21 |
| 4797351 | Method for processing silver halide color photographic materials | Masao Ishikawa, Shigeharu Koboshi, Satoru Kuse | 1989-01-10 |