Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834767 | Compositions used in permanent alteration of hair color | Carmen D. Bires, Robert B. Login | 1989-05-30 |
| 4830850 | Quaternized nitrogen containing compounds | Robert B. Login, Ratan K. Chaudhuri, David J. Tracy | 1989-05-16 |
| 4808569 | Fragrance additive | Ratan K. Chaudhuri, Robert B. Login | 1989-02-28 |
| 4793994 | Compositions used in permanent structure altering of hair | Carmen D. Bires, Robert B. Login | 1988-12-27 |
| 4775527 | Compositions used in permanent alteration of hair color | Carmen D. Bires, Robert B. Login | 1988-10-04 |
| 4732990 | Quaternized nitrogen containing compounds | Robert B. Login, Ratan K. Chaudhuri, David J. Tracy | 1988-03-22 |