Granted Patent
Utility
US 6,344,294 · App. 09/426,722
Process for preparing a positive electrode active material for a nonaqueous secondary battery by forming an oxalate precipitate
Inventors:
Naoto Torata, Takehito Mitate
Patented Case
View Patent ↗
Granted: Feb 5, 2002
Filed: Oct 26, 1999
Inventors
Naoto Torata
Takehito Mitate
Assignee (at issue)
SHARP KABUSHIKI KAISHA
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.