Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12398104 | Odorless thiols for permanent waving, straightening and depilatory applications | Guiru Zhang, Bryan Patrick Murphy, David S. Salloum | 2025-08-26 |
| 11129784 | Shaping keratin fibres using oxoethanoic acid and/or derivatives thereof | Randy Purnell Washington, Jamie Angel Reed, Alan David Willey | 2021-09-28 |
| 9748085 | Systems and methods of detecting and demonstrating heat damage to hair via evaluation of peptides | Ron Walker, Yiping Sun, Michael Glenn Davis, Randy Purnell Washington, Katherine Mae Beglinger | 2017-08-29 |
| 9415000 | Hair straightening method involving reducing sugars | Randy Purnell Washington, Andreas Flohr | 2016-08-16 |