Granted Patent
Utility
US 6,586,138 · App. 09/777,367
Freestanding microporous separator including a gel-forming polymer
Inventors:
Richard W. Pekala, Mehrgan Khavari
Patented Case
View Patent ↗
Granted: Jul 1, 2003
Filed: Feb 5, 2001
Inventors
Richard W. Pekala
Mehrgan Khavari
Assignee (at issue)
Amtek Research International LLC
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.