Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684105 | Process for providing homogeneous copolymers of vinylpyrrolidone and 3-dimethylaminopropyl methacrylamide (DMAPMA) which form clear aqueous solutions having high cloud points | Philip F. Wolf | 1997-11-04 |
| 5663258 | Strongly swellable, moderately crosslinked copolymers of vinylpyrrolidone and vinyl acetate | Philip F. Wolf | 1997-09-02 |
| 5604275 | Color stabilized aqueous n-vinyl heterocyclic copolymer solutions | Philip F. Wolf | 1997-02-18 |