Granted Patent
Utility
US 6,048,646 · App. 09/120,063
Method for treating copper current collectors for Li-ion and/or Li-ion polymer batteries
Inventors:
Xuekun Xing, Wan Jun Fang, James R. Winchester
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Jul 21, 1998
Inventors
Xuekun Xing
Wan Jun Fang
James R. Winchester
Assignee (at issue)
Ga-Tek, Inc.
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.