Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5795354 | Process for dyeing wool and other keratin fibres | — | 1998-08-18 |
| 5496379 | Dyeing process for keratin materials, with improved exhaustion of bath constituents | Francis J. Harrigan | 1996-03-05 |