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:
Dec. 30, 2025
Filed:
Oct. 05, 2022
Uacj Corporation, Tokyo, JP;
Hidetoshi Kumagai, Tokyo, JP;
Tomoki Yamayoshi, Tokyo, JP;
UACJ CORPORATION, Tokyo, JP;
Abstract
Provided is a brazing sheet exhibiting excellent brazing properties where an aluminum material is brazed in an inert gas atmosphere such as a nitrogen gas atmosphere without using a flux. The aluminum alloy brazing sheet used for brazing in an inert gas atmosphere without using a flux, the aluminum alloy brazing sheet comprises: a core material; and a brazing material cladded on one side surface or both side surfaces of the core material, in which the core material is formed of aluminum or an aluminum alloy, the brazing material comprises 4.00 mass % to 13.00 mass % of Si and comprises 0.10 mass % to 2.00 mass % of Mg, with the balance being Al and inevitable impurities, and an integral value of Mg from a surface of the brazing material to a depth of 60 nm is 30 at %×nm to 600 at %×nm.