Granted Patent
Utility
US 6,150,055 · App. 09/128,842
Carbonaceous negative electrode material for nonaqueous secondary battery, process for producing the same, and nonaqueous secondary battery
Inventors:
Akio Kato, Noritoshi Takao, Tomiyuki Kamada
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Aug 4, 1998
Inventors
Akio Kato
Noritoshi Takao
Tomiyuki Kamada
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.