Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4256559 | Method and apparatus for regenerating spent photographic bleach-fixer solution | Mineo Watanabe, Seiki Iribe | 1981-03-17 |
| 4217188 | Method for storing developers | — | 1980-08-12 |
| 4204930 | Method and apparatus for regenerating spent photographic bleach-fixer solution | Seiki Iribe, Mineo Watanabe | 1980-05-27 |