Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6602302 | Substituted 1,4 diaminobenzene compounds and oxidation dye precursor compositions containing same | Hans-Juergen Braun | 2003-08-05 |
| 6600050 | Diaminopyrazole derivatives and dyes containing said compounds | Hans-Juergen Braun | 2003-07-29 |
| 6592631 | p-Aminophenol derivative compounds and dye compositions containing same | Hans-Juergen Braun | 2003-07-15 |