Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6299866 | Water-based, hair care products containing homogeneous terpolymers having both hair styling and conditioning properties | Kou-Chang Liu, Robert B. Login, Janice Kay Bees | 2001-10-09 |
| 6136934 | Process for making substantially homogeneous polymers | Kou-Chang Liu | 2000-10-24 |
| 6110454 | Process for making substantially homogeneous copolymers of vinyl pyrrolidone and N-3,3-dimethylaminopropyl methacrylamide for personal care applications | Kou-Chang Liu, Lowell R. Anderson, Eugene Hardy | 2000-08-29 |
| 5626836 | Low VOC hair spray compositions containing terpolymers of vinyl pyrrolidone, vinyl caprolactam and 3-(N-dimethylaminopropyl) methacrylamide | Kou-Chang Liu, Colleen M. Rocafort, Lowell R. Anderson | 1997-05-06 |
| 5609865 | Substantially homogeneous copolymers of vinyl pyrrolidone and N-3,3-dimethylaminopropyl methacrylamide for personal care applications | Kou-Chang Liu, Lowell R. Anderson, Eugene Hardy | 1997-03-11 |
| 5523369 | Homogeneous polymerization process for making substantially homogeneous terpolymers | Kou-Chang Liu, Robert B. Login, Janice Kay Bees | 1996-06-04 |
| 5502136 | Process for making substantially homogeneous copolymers of vinyl pyrrolidone and vinyl acetate which form clear aqueous solutions | Yuanzhen Zhong, Philip F. Wolf | 1996-03-26 |
| 5492988 | Homogeneous polymerization process for making substantially homogeneous terpolymers of vinyl pyrrolidone, an organic quarternary ammonium monomer and a hydrophobic monomer | Kou-Chang Liu, Robert B. Login | 1996-02-20 |