Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5948153 | Water-soluble complexes of optical brighteners and quaternary ammonium compounds which are substantially free from unwanted salts | Qinghong Jessica Ann, Xiaodong Zhao | 1999-09-07 |
| 5935272 | Compositions comprising aryloxypolyoxyalkylene naphthalimide derivative colorants | Robert L. Mahaffey | 1999-08-10 |