IP Library › Granted Patent US 6,699,990
Granted Patent Utility
US 6,699,990 · App. 10/258,320

3-(2,5-diaminophenyl)-acrylamide derivatives and coloring agents containing said compounds

Inventors: Laurent Chassot, Hans-Juergen Braun
Patented Case View Patent ↗
Granted: Mar 2, 2004 Filed: Oct 21, 2002
Inventors
Laurent Chassot
Hans-Juergen Braun
Assignee (at issue)
Wella GmbH

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Quick Facts
Patent No.
US 6,699,990
App. No.
10/258,320
Filed
2002-10-21
Granted
2004-03-02
Kind
B2