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:
Sep. 08, 2026
Filed:
Mar. 14, 2023
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Takuya Yamawaki, Takasago, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
Abstract
Provided is a technique to prevent formation of a gap between a case body and a sealing plate. The battery case disclosed herein includes: a case body having an opening; and a substantially rectangular sealing plate attached to the opening. The sealing plate has a pair of long side portions, a pair of short side portions, and R portions at four corners. An edge of a lower surface of the sealing plate is chamfered. A chamfering amount of the short side portions is greater than a chamfering amount of the long side portions. Each the R portions comprises a gradual change region, where a chamfering amount gradually decreases from a first end on a side of the short side portions toward a second end on a side of the long side portions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile