Granted Patent
Utility
US 6,632,569 · App. 09/447,267
Carbonaceous material for electrode and non-aqueous solvent secondary battery using this material
Inventors:
Takashi Kameda, Tadashi Ishihara
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: Nov 23, 1999
Inventors
Takashi Kameda
Tadashi Ishihara
Assignee (at issue)
MITSUBISHI CHEMICAL 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.