Granted Patent
Utility
US 6,746,799 · App. 09/842,485
Lithium phosphate composite positive electrode and non-aqueous electrolyte cell
Inventors:
Atsuo Yamada, Takayuki Yamahira
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Apr 25, 2001
Inventors
Atsuo Yamada
Takayuki Yamahira
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.