Granted Patent
Utility
US 6,593,028 · App. 09/708,376
Separator envelope for swelling in electrochemical cells
Inventor:
Richard McCormick
Patented Case
View Patent ↗
Granted: Jul 15, 2003
Filed: Nov 8, 2000
Inventor
Richard McCormick
Assignee (at issue)
Wilson Greatbatch, Ltd.
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.