Granted Patent
Utility
US 6,277,364 · App. 09/169,208
Polyurethanes as topical skin protectants
Inventors:
Daniel Bucks, Albert M Dorsky, Sui Yuen Eddie Hou
Patented Case
View Patent ↗
Granted: Aug 21, 2001
Filed: Oct 9, 1998
Inventors
Daniel Bucks
Albert M Dorsky
Sui Yuen Eddie Hou
Assignee (at issue)
Bertek Pharmaceuticals, Inc.
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.