Granted Patent
Utility
US 5,526,546 · App. 08/052,328
Surface treated applicators having bristles coated with an etched layer ions produced by an ion-producing gas plasma
Inventor:
Melvin E. Kamen
Patented Case
View Patent ↗
Granted: Jun 18, 1996
Filed: Apr 23, 1993
Inventor
Melvin E. Kamen
Assignee (at issue)
Revlon Consumer Products 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.