Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5844041 | Process for increasing the viscosity of aqueous solutions of homogeneous copolymers of vinyl pyrrolidone and n-3, 3-dimethylaminopropyl methacrylamide | Lowell R. Anderson, Kou-Chang Liu | 1998-12-01 |
| 5395904 | Process for providing homogeneous copolymers of vinylpyrrolidone and vinyl acetate which form clear aqueous solutions having a high cloud point | Yuanzhen Zhong, Terry E. Smith | 1995-03-07 |
| 5319041 | Process for the preparation of vinylpyrrolidone/vinyl acetate copolymers | Yuanzhen Zhong, Paul D. Taylor, Terry E. Smith | 1994-06-07 |