Granted Patent
Utility
US 6,749,967 · App. 09/842,483
Positive electrode active material and non-aqueous electrolyte cell
Inventors:
Guohua Li, Atsuo Yamada
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Apr 25, 2001
Inventors
Guohua Li
Atsuo Yamada
Assignee (at issue)
SONY GROUP 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.