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. 09, 1987
Filed:
Aug. 06, 1986
Applicant:
Inventor:
Leo J Slominski, Bristol, CT (US);
Assignee:
MacDermid, Incorporated, Waterbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C / ;
U.S. Cl.
CPC ...
427 12 ; 427 97 ; 427 98 ; 427305 ; 427437 ; 4274431 ;
Abstract
A method of electrolessly depositing copper onto a suitably prepared substrate surface is disclosed in which passivity to an otherwise autocatalytic electroless depositing solution is cured by application of a cathodic current for a brief period of time until autocatalytic deposition commences. The method is suitable for coating surfaces which per se are passive to the depositing solution as well as for coating surfaces which normally are receptive to the autocatalytic deposition and which have been so coated up to a certain point where interruption of the plating thereafter renders the surface passive to further deposition.