Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4313808 | Electrodialyzer and method of regenerating waste photographic processing solution | Noboru Idemoto, Minoru Yamada, Mamoru Tashiro | 1982-02-02 |
| 4283266 | Method and apparatus for controlling halogen ion concentration in a photographic processing solution | Hiroyuki Hirai, Isao Tsuyuki, Kazumi Watase | 1981-08-11 |
| 4207157 | Method for controlling halogen ion concentration in a photographic processing solution | Hiroyuki Hirai, Isao Tsuyuki, Kazumi Watase | 1980-06-10 |