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:
May. 06, 2014
Filed:
Apr. 12, 2012
Applicants:
Sung Nim JO, Chungcheongnam-do, KR;
MI Sun Lee, Chungcheongnam-do, KR;
Hae IN Cho, Chungcheongnam-do, KR;
Inventors:
Sung Nim Jo, Chungcheongnam-do, KR;
Mi Sun Lee, Chungcheongnam-do, KR;
Hae In Cho, Chungcheongnam-do, KR;
Assignee:
Samsung Fine Chemicals Co., Ltd., Ulsan, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for preparing a lithium manganese oxide positive active material for a lithium ion secondary battery, which has spherical spinel-type lithium manganese oxide particles having two or more different types of sizes, the method including uniformly mixing manganese oxide having two or more different types of sizes with a lithium containing compound, and heat treating the resultant mixture to obtain lithium manganese oxide.