Granted Patent
Utility
US 5,409,693 · App. 08/024,890
Method for treating and preventing sunburn and sunburn damage to the skin
Inventor:
Nicholas V. Perricone
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Mar 1, 1993
Inventor
Nicholas V. Perricone
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.