Granted Patent
Utility
US 6,183,910 · App. 08/957,111
Electrochemical lithium secondary element
Inventors:
Hans-Walter Praas, Sibylle Kemmler-Sack, Peter Endres
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Oct 24, 1997
Inventors
Hans-Walter Praas
Sibylle Kemmler-Sack
Peter Endres
Assignee (at issue)
Varta Batterie Aktiengesellschaft
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.