Granted Patent
Utility
US 6,714,402 · App. 10/140,005
Microfabricated electrochemical device separators
Inventor:
Hundi Panduranga Kamath
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: May 6, 2002
Inventor
Hundi Panduranga Kamath
Assignee (at issue)
Cooper Technologies Company
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.