Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10034823 | Method of coloring hair with washfast blue imidazolium direct dye compounds | Bryan Patrick Murphy, Guiru Zhang | 2018-07-31 |
| 9982138 | Hair color compositions comprising stable violet-blue to blue imidazolium dyes | Bryan Patrick Murphy, Guiru Zhang | 2018-05-29 |