Granted Patent
Utility
US 6,565,615 · App. 09/248,387
Dye compositions
Inventors:
Michael Wong, Stanley Pohl
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Feb 12, 1999
Inventors
Michael Wong
Stanley Pohl
Assignee (at issue)
Clairol Incorporated
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.