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:
Mar. 17, 2026
Filed:
Jan. 14, 2022
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Kentaro Tsukamoto, Kobe, JP;
Yoshifumi Magari, Hirakata, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Abstract
A secondary battery having an electrode body including a positive electrode plate, a negative electrode plate, and a separator, is manufactured by steps including preparing a positive electrode precursor, in which a positive electrode active material layer including positive electrode active material and a protective layer having lower electrical conductivity than the positive electrode active material layer has been applied to a surface of a positive electrode core, which is a strip-shaped metal foil, cutting a region of the positive electrode precursor, where the protective layer has been applied, by a continuous wave laser, preparing a negative electrode precursor, in which a negative electrode active material layer including negative electrode active material has been applied to a negative electrode core, which is a strip-shaped metal foil, and cutting a region of the negative electrode precursor, where the negative electrode active material layer has been applied, by a pulsed laser.