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:
Mar. 10, 2015
Filed:
Jun. 24, 2009
Kengo Okanishi, Kagawa, JP;
Keita Yamaguchi, Kagawa, JP;
Norikazu Yamamoto, Kagawa, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
To provide a nonaqueous secondary battery exhibiting a sufficiently small charge/discharge irreversible capacity in the initial cycle, exhibiting an excellent charge acceptance and excellent cycle characteristics, even when the negative electrode material-containing active material layer on a current collector is highly densified so as to obtain a high capacity. A composite graphite particle for nonaqueous secondary batteries, which is a composite graphite particle (B) obtained by forming a spherical graphite particle (A) and a graphitized product of graphitizable binder, wherein the spherical graphite particle (A) is a specific graphite particle or the composite graphite particle satisfies (a) and/or (b):