Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4256559 | Method and apparatus for regenerating spent photographic bleach-fixer solution | Takezo Ono, Mineo Watanabe | 1981-03-17 |
| 4204930 | Method and apparatus for regenerating spent photographic bleach-fixer solution | Takezo Ono, Mineo Watanabe | 1980-05-27 |