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:
Jul. 30, 1991
Filed:
Apr. 26, 1989
Navin N Vyas, Winston-Salem, NC (US);
AMP Incorporated, Harrisburg, PA (US);
Abstract
This invention is directed to a non-flammable plating resist with improved adhesion and edge covering characteristics which permits its selective removal by an ordinary laser ablation process or an energy efficient laser assisted process, and to the preferred method in using same to selectively plate a metal substrate, such as a nickel plated, electrically conductive metal with a precious metal. The preferred method comprises the steps of applying a thin uniform layer of such resist onto the substrate and drying the same in situ to a thickness greater than 100 microinches and less than 500 microinches, and drying same in situ, where such resist (a) is resistant to deterioration by chemical plating solutions of such precious metal, (b) is readily strippable in alkaline solutions, and (c) has a flashpoint in excess of 100.degree. F. A preferred formulation for such resist comprises, by weight, the following: