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:
Apr. 18, 1989
Filed:
Nov. 10, 1986
Applicant:
Inventor:
Ronald G Reed, Colorado Springs, CO (US);
Assignee:
ProtoCAD, Inc., Colorado Springs, CO (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05C / ;
U.S. Cl.
CPC ...
364488 ; 156901 ; 1566591 ;
Abstract
Plated through holes in a printed circuit board can be conveniently produced during manufacture of the circuit board under the control of a computer controlled plotter by the use of a pen-like instrument which positively displaces a thick film fluid conductive adhesive on a tip of the instrument. The fluid is smeared onto the side walls of the hole by moving the tip in a peripheral motion around the side wall of the hole. Copper is electroplated directly onto the conductive adhesive. Resist material is applied in a similar fashion prior to etching the circuit traces on the surface sheets of the circuit board.