Granted Patent
Utility
US 6,007,944 · App. 09/048,607
Rechargeable lithium-ion cell
Inventors:
Dieter Bechtold, Dietrich Bartke, Peter Kramer, Reiner Kretzschmar, Jurgen Vollbert
Patented Case
View Patent ↗
Granted: Dec 28, 1999
Filed: Mar 26, 1998
Inventors
Dieter Bechtold
Dietrich Bartke
Peter Kramer
Reiner Kretzschmar
Jurgen Vollbert
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.