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:
Sep. 01, 1998
Filed:
Jun. 24, 1997
Applicant:
Inventors:
Szuchain Chen, Orange, CT (US);
Nina Yukov, Orange, CT (US);
Assignee:
Olin Corporation, New Haven, CT (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; C25D / ;
U.S. Cl.
CPC ...
428607 ; 205104 ; 205111 ; 428612 ; 428675 ; 428687 ; 428935 ;
Abstract
There it is disclosed a chemical treatment for copper foil which imparts a dark brown to black color to the foil and improves the bond strength of the foil to a dielectric substrate without detrimentally changing the etching characteristics of the foil. The treatment includes depositing a nodular copper/nickel alloy layer on a surface of the foil. These nodules are 55% to 95% by weight copper and are electrolytically deposited using a pulse power controller.