Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5240463 | Dyeing leather: exhaustion process using combination of pigment dispersion and aqueous solution of water-soluble sulfur dye | Norbert Ambrecht, Lothar Schlosser | 1993-08-31 |