Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7341715 | Method and agents on the basis of 2-mercaptopropionic acid amides for durable hair forming and a method for producing same | Ursus Schweizer, Guenther Lang, Regina Ortmann, Wolfgang Hanefeld | 2008-03-11 |
| 6506373 | Agent and method for permanent waving | Dirk Lauscher, Birgit Schreiber | 2003-01-14 |
| 6399051 | Method and agents for permanently styling hair, with a base consisting of N,N-disubstituted mercaptoacetamides | Guenther Lang, Wolfgang Hanefeld, Heiko Walther | 2002-06-04 |
| 6264932 | Agent and method for permanent shaping of hair and method for the production of N-alkylmercaptoacetamides | Gunther Lang, Wolfgang Hanefeld, Heiko Walther | 2001-07-24 |
| 6173717 | Hair shaping method using acidic aqueous intermediate rinse to prevent overcurling | Dieter Schonert, Gunther Lang, Dieter Hoch, Wilfried K. Kalbacher, Johann Märkl | 2001-01-16 |
| 6162425 | Saturated, alkyl-substituted n-mercaptoacetyl heterocyclic compounds and compositions and methods for permanent shaping of hair based on same and processes for making same | Guenter Lang, Wolfgang Hanefeld, Heiko Walther | 2000-12-19 |
| 6153178 | Agent and process for permanent hair wave based on mercaptoacetamides | Guenther Lang, Wolfgang Hanefeld, Heiko Walther | 2000-11-28 |
| 6153180 | Agent and method for permanently shaping the hair, based on n-branched-chain alkyl-substituted mercapto acetamides and process for their preparation | Guenther Lang, Wolfgang Hanefeld, Heiko Walther | 2000-11-28 |
| 5985253 | Hair shaping compositions containing mercaptoethylamines and methods for the permanent shaping of hair using same | Guenther Lang, Heiko Walther, Wolfgang Hanefeld | 1999-11-16 |
| 5935562 | Permanent process and agent | Gunther Lang, Helmut Keller, Ulrike Bohr | 1999-08-10 |