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. 04, 2024
Filed:
Dec. 17, 2021
Applicant:
Dongwoo Fine-chem Co., Ltd., Iksan-si, KR;
Inventors:
Assignee:
DONGWOO FINE-CHEM CO., LTD., Iksan-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 3/00 (2006.01); H05K 3/28 (2006.01);
U.S. Cl.
CPC ...
H05K 3/0011 (2013.01); H05K 3/284 (2013.01); H05K 2203/1333 (2013.01);
Abstract
A circuit board includes a base layer, an electrode layer formed on the base layer, a passivation layer formed on the electrode layer while opening a part of the electrode layer, and a surface treatment layer formed on the open surface of the electrode layer. The surface treatment layer may contain 70 to 40% of copper and 30 to 60% of nickel.