Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE31126 | Quaternary ammonium compounds in pretreatment of hair before shampooing with an anionic shampoo | George F. Dasher, Thomas Schamper | 1983-01-18 |
| RE30874 | Quaternary ammonium compounds in pretreatment of hair before shampooing with an anionic shampoo | George F. Dasher, Thomas Schamper | 1982-03-02 |