Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660972 | Method for photographic development using a filter to inhibit occurrence of silver sludges | Hideto Kiyama, Yukinao Kawamata, Susumu Baba | 1997-08-26 |
| 5344741 | Method for photographic development | Seiichi Sumi | 1994-09-06 |