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:
Apr. 21, 2026
Filed:
Mar. 29, 2021
Applicant:
Mitsubishi Materials Corporation, Tokyo, JP;
Inventors:
Fumiaki Ishikawa, Saitama, JP;
Shintaro Hara, Saitama, JP;
Assignee:
MITSUBISHI MATERIALS CORPORATION, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05K 1/05 (2006.01); B32B 15/01 (2006.01); H01L 23/373 (2006.01); H05K 1/02 (2006.01); H01L 23/00 (2006.01); H05K 1/181 (2026.01);
U.S. Cl.
CPC ...
H05K 1/056 (2013.01); B32B 15/01 (2013.01); H01L 23/3735 (2013.01); H05K 1/0271 (2013.01); H01L 24/16 (2013.01); H01L 2224/16227 (2013.01); H05K 1/181 (2013.01); H05K 2201/0154 (2013.01); H05K 2201/0191 (2013.01); H05K 2201/0209 (2013.01); H05K 2201/10015 (2013.01); H05K 2201/10022 (2013.01); H05K 2201/10075 (2013.01); H05K 2201/10121 (2013.01); H05K 2201/10166 (2013.01);
Abstract
A copper base substrate of the present invention, in which a copper substrate, an insulating layer, and a circuit layer, are laminated in an order in the copper substrate, a ratio of a thickness (unit: μm) to an elastic modulus (unit: GPa) at 100° C. is 50 or more in the insulating layer, and the circuit layer has an elastic modulus at 100° C. of 100 GPa or less.
Ishikawa, Fumiaki. (2026). Copper base substrate comprising an insulating layer having a specific relationship between thickness and elastic modulus (U.S. Patent No. 12610463). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12610463
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile