Granted Patent
Utility
US 5,610,187 · App. 08/480,349
Biodegradable quaternary hair and skin conditioners
Inventors:
Monna Manning, Andrea S. Allardice, Floyd E. Friedli
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Jun 7, 1995
Inventors
Monna Manning
Andrea S. Allardice
Floyd E. Friedli
Assignee (at issue)
Witco Corporation
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.