Granted Patent
Utility
US 6,511,517 · App. 09/551,132
Method for producing a secondary lithium cell comprising a heat-sensitive protective mechanism
Inventors:
Matthias Ullrich, Dieter Bechtold, Heinrich Rabenstein, Thomas Brohm
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Apr 17, 2000
Inventors
Matthias Ullrich
Dieter Bechtold
Heinrich Rabenstein
Thomas Brohm
Assignee (at issue)
NBT Co., 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.