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:
Jul. 29, 2014
Filed:
Aug. 23, 2010
Applicants:
Yukinobu Yura, Nagoya, JP;
Nobuyuki Kobayashi, Nagoya, JP;
Tsutomu Nanataki, Nagoya, JP;
Kazuyuki Kaigawa, Nagoya, JP;
Inventors:
Yukinobu Yura, Nagoya, JP;
Nobuyuki Kobayashi, Nagoya, JP;
Tsutomu Nanataki, Nagoya, JP;
Kazuyuki Kaigawa, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/50 (2010.01);
U.S. Cl.
CPC ...
Abstract
A positive electrode active material containing a large number of crystal grains which contain, by 70 areal % or more, primary particles of non-octahedral shape, having particle diameters of 5 to 20 μm, and composed of lithium manganate of spinel structure containing lithium and manganese as the constituent elements.