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. 13, 2026
Filed:
Jan. 06, 2021
Sanyo Electric Co., Ltd., Kadoma, JP;
Yuki Nakai, Osaka, JP;
Atsushi Kaiduka, Osaka, JP;
Tatsuhiko Suzuki, Osaka, JP;
Takaharu Morikawa, Osaka, JP;
PANASONIC ENERGY CO., LTD., Osaka, JP;
Abstract
With respect to a secondary battery of one embodiment of the present invention, at least one of a positive electrode core body and a negative electrode core body is configured such that the tensile elongation in the central part in the width direction is higher than the tensile elongation in both end parts in the width direction. With respect to a secondary battery of another embodiment of the present invention, at least one of a positive electrode core body and a negative electrode core body is configured such that the number of crystal grains per unit area in the central part in the width direction is smaller than the number of crystal grains per unit area in both end parts in the width direction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile