Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679332 | Hair keratin-reducing cysteine esters and compositions for permanent shaping of hair based on same | Hans-Juergen Braun, Guenther Lang | 1997-10-21 |
| 5637295 | Methods and compositions for permanent shaping of hair | Guenther Lang, Kirstin Uhl, Gerhard Sendelbach | 1997-06-10 |
| 5635170 | Composition and method for permanent shaping of hair | Gunther Lang | 1997-06-03 |