Granted Patent
Utility
US 5,741,472 · App. 08/518,357
Carbonaceous electrode material for secondary battery
Inventors:
Naohiro Sonobe, Jiro Masuko, Takao Iwasaki
Patented Case
View Patent ↗
Granted: Apr 21, 1998
Filed: Aug 23, 1995
Inventors
Naohiro Sonobe
Jiro Masuko
Takao Iwasaki
Assignee (at issue)
Kureha Kagaku Kogyo 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.