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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.:

US 11680332 B1

PDFFull Text
Date of Patent:
Jun. 20, 2023

Filed:

Mar. 24, 2021

Surface-treated copper foil, and copper-clad laminate and circuit board using same

Applicants:

Furukawa Electric Co., Ltd., Tokyo, JP;

Murata Manufacturing Co., Ltd., Nagaokakyo, JP;

Inventors:

Takahiro Tsuruta, Tokyo, JP;

Takeo Uno, Tokyo, JP;

Yuko Okuno, Tokyo, JP;

Sunao Fukutake, Nagaokakyo, JP;

Yoshimasa Nishi, Nagaokakyo, JP;

Assignees:

Furukawa Electric Co., Ltd., Tokyo, JP;

Murata Manufacturing Co., Ltd., Nagaokakyo, JP;

Attorney:

Morgan, Lewis & Bockius LLP

Primary Examiner:

Seth Dumbris

Int. Cl.
CPC ...
B32B 15/08 (2006.01); C25D 3/38 (2006.01); C25D 5/00 (2006.01); B32B 5/02 (2006.01); B32B 15/14 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01); C25D 7/06 (2006.01); H05K 1/05 (2006.01); C25D 1/04 (2006.01);
U.S. Cl.
CPC ...
C25D 5/605 (2020.08); B32B 5/024 (2013.01); B32B 15/08 (2013.01); B32B 15/14 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); C25D 3/38 (2013.01); C25D 7/0614 (2013.01); H05K 1/056 (2013.01); B32B 2262/103 (2013.01); B32B 2307/538 (2013.01); B32B 2457/08 (2013.01); C25D 1/04 (2013.01); H05K 2201/0141 (2013.01); H05K 2201/0358 (2013.01);
Abstract

Provided is a surface-treated copper foil excellent in laser processability. The surface-treated copper foil includes a roughened surface formed by subjecting a surface to a roughening treatment, in which when measured using a three-dimensional roughness meter, the roughened surface has a surface skewness Ssk within a range of from −0.300 to less than 0 and an arithmetic mean summit curvature Ssc within a range of from 0.0220 nmto less than 0.0300 nm.

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