Granted Patent
Utility
US 6,120,939 · App. 09/006,362
Meltblown fiber battery separator
Inventors:
J. Kevin Whear, Werner Bohnstedt, Eric Peters
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Jan 13, 1998
Inventors
J. Kevin Whear
Werner Bohnstedt
Eric Peters
Assignee (at issue)
DARAMIC, 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.