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:
Oct. 12, 2010
Filed:
Mar. 12, 2007
Applicants:
Takashi Yoshida, Kanagawa, JP;
Kenji Nakane, Ibaraki, JP;
Inventors:
Takashi Yoshida, Kanagawa, JP;
Kenji Nakane, Ibaraki, JP;
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/02 (2006.01); H01B 1/08 (2006.01); H01M 4/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a positive-electrode active material powder, which comprises a granular material (A) capable of doping/dedoping lithium ions and a deposit (B) placed on the surface of the material in a granular or layered form (herein, the material (A) and the deposit (B) are not the same), the percentage of [volumetric sum of particles having a particle diameter of 1 μm or less]/[volumetric sum of entire particles] being 5% or less.