Granted Patent
Utility
US 6,638,981 · App. 09/931,293
Topical compositions and methods for treating pain
Inventors:
Robert O. WILLIAMS, III, Feng Zhang
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Aug 17, 2001
Inventors
Robert O. WILLIAMS, III
Feng Zhang
Assignee (at issue)
EpiCept 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.