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:
Jun. 02, 2026
Filed:
Aug. 10, 2022
Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Hideaki Matsuoka, Nagakute, JP;
Hiroaki Kadoura, Nagakute, JP;
Takashi Asada, Nagakute, JP;
Hiroyuki Mori, Nagakute, JP;
Tatsuyuki Amago, Nagakute, JP;
Ayaka Kagami, Inazawa, JP;
Shuhei Ogura, Nagakute, JP;
Tomohiko Sekiguchi, Nagakute, JP;
Kyosuke Izuno, Toyota, JP;
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, Nagakute, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A metal joined body has an iron base body and an aluminum base body that are joined together via a joint layer. The joint layer has a first layer composed of a first intermetallic compound formed on the iron base body side and a second layer composed of a second intermetallic compound formed on the aluminum base body side. The first layer has one or more first protrusions that merge integrally into the iron base body and extend in a pile shape into the first intermetallic compound. The second layer may have one or more second protrusions that are composed of a second intermetallic compound and extend in a columnar shape into the aluminum base body. The first intermetallic compound may contain AlFe, and the second intermetallic compound may contain AlFe. The total thickness of the first layer and the second layer is, for example, 2 to 15 μm.