Granted Patent
Utility
US 6,004,355 · App. 09/091,440
Hair coloring compositions comprising a peroxygen oxidizing agent, an organic peroxyacid precursor, and oxidative hair coloring agents
Inventors:
Louis Carlos Dias, Rowena Juliet Flux Pullan, Alison Jane Sanger
Patented Case
View Patent ↗
Granted: Dec 21, 1999
Filed: Jun 29, 1998
Inventors
Louis Carlos Dias
Rowena Juliet Flux Pullan
Alison Jane Sanger
Assignee (at issue)
The Procter & Gamble Company
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.