Granted Patent
Utility
US 6,008,359 · App. 09/146,571
Piperidine antioxidants and compositions therewith for preventing the fading of artificial hair dye
Inventors:
Janusz Jachowicz, Bruce C. Locke, Ratan K. Chaudhuri
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Sep 3, 1998
Inventors
Janusz Jachowicz
Bruce C. Locke
Ratan K. Chaudhuri
Assignee (at issue)
ISP INVESTMENTS LLC
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.