IP Library › Granted Patent US 6,749,644
Granted Patent Utility
US 6,749,644 · App. 10/049,346

2-hydroxy-5-amino-biphenyl-derivatives and oxidative hair coloring agents containing said compounds

Inventors: Laurent Chassot, Hans-Juergen Braun
Patented Case View Patent ↗
Granted: Jun 15, 2004 Filed: Jan 30, 2002
Inventors
Laurent Chassot
Hans-Juergen Braun
Assignee (at issue)
Wella GmbH

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Quick Facts
Patent No.
US 6,749,644
App. No.
10/049,346
Filed
2002-01-30
Granted
2004-06-15
Kind
B2