Granted Patent
Utility
US 6,620,400 · App. 09/952,357
Method of producing layered lithium metal oxides free of localized cubic spinel-like structural phases
Inventors:
Yuan Gao, Marina Yakovleva, Hugh Wang, John F. Engel
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Sep 12, 2001
Inventors
Yuan Gao
Marina Yakovleva
Hugh Wang
John F. Engel
Assignee (at issue)
FMC CORPORATION
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.