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:
Feb. 20, 2007
Filed:
Nov. 25, 2002
Masaya Okochi, Osaka, JP;
Yutaka Kawatate, Hirakata, JP;
Ryoichi Tanaka, Izumiotsu, JP;
Kaoru Inoue, Hirakata, JP;
Masaya Okochi, Osaka, JP;
Yutaka Kawatate, Hirakata, JP;
Ryoichi Tanaka, Izumiotsu, JP;
Kaoru Inoue, Hirakata, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A lithium ion secondary battery comprising: a positive electrode; a negative electrode; and a non-aqueous electrolyte, the positive electrode comprising a positive electrode active material and a binder, the positive electrode active material comprising a lithium-containing composite oxide represented by the chemical formula:Li(CoMgM)Owhere M is at least one selected from Ni, Mn and Al, 0≦a≦1.05, 0.005≦x≦0.025, 0≦y≦0.25, 0.85≦b≦1.1, and 1.8≦c≦2.1.