Granted Patent
Utility
US 6,203,942 · App. 09/303,877
Phosphate additives for nonaqueous electrolyte rechargeable electrochemical cells
Inventors:
Hong Gan, Esther S. Takeuchi
Patented Case
View Patent ↗
Granted: Mar 20, 2001
Filed: May 3, 1999
Inventors
Hong Gan
Esther S. Takeuchi
Assignee (at issue)
Wilson Greatbatch, 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.