Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5560750 | Compositions and methods for altering the color of hair | Harold R. Crews, Roy M. Evans, Jr. | 1996-10-01 |
| 5415856 | Hair treatment compositions containing disaccharides | Harold R. Crews, Roy M. Evans, Jr. | 1995-05-16 |
| 5101841 | Compositions and methods for the treatment of hair | Harold R. Crews, Roy M. Evans, Jr. | 1992-04-07 |
| 4947878 | Compositions and methods for the treatment of hair | Harold R. Crews, Roy M. Evans, Jr. | 1990-08-14 |