Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4323644 | Photographic material containing polymers with active ester groups | Masasi Ogawa, Kunio Ishigaki | 1982-04-06 |
| 4312940 | Photographic material containing a novel polymer mordant | Shigeru Nagatomo | 1982-01-26 |