Granted Patent
Utility
US 6,699,623 · App. 09/684,206
High performance lithium or lithium ion cell
Inventor:
Hongli Dai
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Oct 6, 2000
Inventor
Hongli Dai
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.