The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 2013
Filed:
Dec. 25, 2007
Hitoshi Matsumoto, Kagawa, JP;
Hideharu Sato, Ibaraki, JP;
Hiroyuki Uono, Ibaraki, JP;
Keita Yamaguchi, Kagawa, JP;
Hitoshi Matsumoto, Kagawa, JP;
Hideharu Sato, Ibaraki, JP;
Hiroyuki Uono, Ibaraki, JP;
Keita Yamaguchi, Kagawa, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A subject is to provide a nonaqueous secondary battery which is sufficiently low in charge/discharge irreversible capacity in initial cycling even when an active-material layer comprising a negative-electrode material and formed on a current collector is densified for capacity increase where the subject is accomplished with composite graphite particles for a nonaqueous secondary battery which comprise a composite of spherical graphite particles and a binder graphite and which satisfy at least one of (a) to (g) conditions as presently claimed and a negative electrode produced using the carbonaceous negative-electrode material according to the invention is excellent in electrolytic-solution infiltration and provides a nonaqueous secondary battery having excellent charge/discharge high-load characteristics.