Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871535 | Compositions used in permanent structure altering of hair | Michael W. Helioff, Robert B. Login | 1989-10-03 |
| 4848377 | Article for permanent structure alteration of hair | Michael W. Helioff, Ratan K. Chaudhuri | 1989-07-18 |
| 4834767 | Compositions used in permanent alteration of hair color | Michael W. Helioff, Robert B. Login | 1989-05-30 |