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. 30, 2020
Filed:
Aug. 12, 2019
Applicant:
Chang Chun Petrochemical Co., Ltd., Taipei, TW;
Inventors:
Assignee:
CHANG CHUN PETROCHEMICAL CO., LTD., Taipei, TW;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21C 37/00 (2006.01); C25D 13/04 (2006.01); C25D 3/22 (2006.01); C25D 3/30 (2006.01); H05K 1/18 (2006.01); C25D 3/12 (2006.01); H05K 3/02 (2006.01);
U.S. Cl.
CPC ...
C25D 13/04 (2013.01); C25D 3/12 (2013.01); C25D 3/22 (2013.01); C25D 3/30 (2013.01); H05K 1/188 (2013.01); H05K 3/022 (2013.01); Y10T 428/12431 (2015.01); Y10T 428/12438 (2015.01);
Abstract
The present disclosure relates to an improved, surface-treated copper foil that is resistant to rusting and discoloration. More specifically, the surface-treated copper foil is chromium-free and includes: (a) a copper foil; optionally, (b) a barrier layer on one or both sides of the copper foil, the barrier layer comprising Ni, Zn, Co, Mn, Sn or a mixture thereof; and (c) an organic layer coupled to the one or both sides of the copper foil or one or both barrier layer(s), wherein the sum total of the N, S, and Si elements of the organic layer is more than 5 normalized atomic %.