Granted Patent
Utility
US 4,840,787 · App. 07/095,591
Dentifrice containing a poly(hydroxypropyl ether) non-ionic surfactant and a specified cationic polymer
Inventor:
Jean F. Grollier
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Jul 14, 1987
Inventor
Jean F. Grollier
Assignee (at issue)
L'OREAL
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.