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:
Nov. 04, 1997
Filed:
Aug. 23, 1995
Hiroshi Fujimoto, Kanagawa, JP;
Yasuo Aotsuka, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A nonaqueous secondary battery comprising positive and negative sheet electrodes, each composed of a collector coated with an electrode material mixture containing the respective active material and a nonaqueous electrolyte containing a lithium salt, wherein the electrode material mixture is present on both the inner and the outer sides of the collector and the coating thickness of the electrode material mixture on the inner side of the collector of the positive and/or negative electrode(s) is smaller than that of the electrode material mixture on the outer side of said collector. The battery is excellent in charge and discharge cycle characteristics, and the sheet electrodes have excellent winding properties when rolled up into cylinders.