Granted Patent
Utility
US 6,503,378 · App. 09/797,557
Polymer electrolyte membrane and method of fabrication
Inventor:
Allison M. Fisher
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Apr 23, 2001
Inventor
Allison M. Fisher
Assignee (at issue)
Motorola, 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.