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.

Date of Patent:
Feb. 10, 2026

Filed:

Jul. 15, 2022
Applicant:

Mitsubishi Materials Corporation, Tokyo, JP;

Inventors:

Nobuyuki Terasaki, Saitama, JP;

Akira Sakurai, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 23/373 (2006.01); H01L 21/48 (2006.01);
U.S. Cl.
CPC ...
H01L 23/3735 (2013.01); H01L 21/4857 (2013.01);
Abstract

This copper/ceramic assembly includes: a copper member consisting of copper or a copper alloy; and a ceramic member, wherein the copper member and the ceramic member are bonded to each other. At a bonded interface between the ceramic member and the copper member, an active metal compound layer is formed on a side of the ceramic member. In a region extending by 10 μm from the active metal compound layer toward a side of the copper member, an area rate of an active metal carbide is 8% or less.


Find Patent Forward Citations

Terasaki, Nobuyuki. (2026). Copper/ceramic assembly, insulating circuit substrate, production method for copper/ceramic assembly, and production method for insulating circuit substrate (U.S. Patent No. 12550731). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12550731

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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