Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5993794 | Perming agent and method of treating hair with the same | Yuichi Ayano | 1999-11-30 |
| 5053051 | Means and method for the oxidative dyeing, especially the redyeing, of living hair: micro-encapsulated acid | Jurgen Tennigkeit, Herbert Lorenz | 1991-10-01 |
| 5046515 | Permanent shaping agent for human hair and the method for the permanent shaping of human hair | Dieter Heinz, Siegfreid Kingeter, Burkhard Rose, Jurgen Tennigkeit | 1991-09-10 |