Granted Patent
Utility
US 5,013,543 · App. 07/270,429
Cosmetic eyeliner formulation
Inventors:
Clara G. Mercado, Amit R. Shah
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Nov 9, 1988
Inventors
Clara G. Mercado
Amit R. Shah
Assignee (at issue)
Revlon
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.