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:
Dec. 12, 1995
Filed:
Aug. 26, 1994
Applicant:
Inventors:
Gary B Larson, Cheshire, CT (US);
Donna Kologe, Thomaston, CT (US);
Cynthia Retallick, West Hartford, CT (US);
Jon Bengston, West Hartford, CT (US);
Assignee:
MacDermid, Incorporated, Waterbury, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 58 ; 427 96 ; 427 97 ; 427 98 ; 427125 ; 205125 ; 205126 ; 216 12 ; 216 17 ; 216 92 ; 216105 ;
Abstract
The present invention relates to a process for the manufacture of printed circuit boards. The method contemplates the use of electroless nickel as the primary medium for interconnection, for building circuitry to the desired thickness and as an etch resist. The method is particularly versatile in reducing the number of steps and variety of chemicals currently necessary to produce these circuit boards.