Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883655 | Quaternized nitrogen containing polycyclic compounds | Robert B. Login, Ratan K. Chaudhuri, David J. Tracy | 1989-11-28 |
| 4871535 | Compositions used in permanent structure altering of hair | Carmen D. Bires, Robert B. Login | 1989-10-03 |
| 4848377 | Article for permanent structure alteration of hair | Carmen D. Bires, Ratan K. Chaudhuri | 1989-07-18 |
| 4837013 | Quaternized nitrogen containing compounds | Robert B. Login, Ratan K. Chaudhuri, David J. Tracy | 1989-06-06 |
| 4834970 | Cosometic compositions containing quaternized nitrogen containing compound | Robert B. Login, Ratan K. Chaudhuri, David J. Tracy | 1989-05-30 |
| 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 |