Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372919 | Polymers for the release of photographically useful groups | Ralph B. Nielsen, David T. Southby, Hwei-Ling Yau | 1994-12-13 |
| 5223581 | Polymers for the release of photographically useful groups | Ralph B. Nielsen, David T. Southby, Hwei-Ling Yau | 1993-06-29 |