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:
Jul. 14, 2026
Filed:
Mar. 04, 2024
Prime Planet Energy & Solutions, Inc., Tokyo, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Primearth Ev Energy Co., Ltd., Shizuoka-ken, JP;
Yuki Sato, Toyota, JP;
Yozo Uchida, Toyota, JP;
Tsuyoshi Ehara, Toyota, JP;
Syoichi Tsuchiya, Toyota, JP;
Masataka Asai, Toyota, JP;
Tsuyoshi Asano, Toyota, JP;
Masahiro Uchimura, Miyoshi, JP;
Yasuaki Nagano, Kosai, JP;
Shigeru Matsumoto, Toyohashi, JP;
PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken, JP;
TOYOTA BATTERY CO., LTD., Shizuoka, JP;
Abstract
In an aluminum member, a member body made of metal aluminum (a lid member and a positive terminal member) is formed, on its member surface, with protrusions (a lid upper-surface protrusion layer, a lid lower-surface protrusion layer, a terminal side-surface protrusion layer, a terminal lower-surface protrusion layer) having a nano-order diameter of less than 1 μm and a nano-order height of less than 1 μm, which are densely arranged. Proximal end portions of the protrusions, continuous to the member surface, contains amorphous alumina and α-alumina.