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:
May. 12, 1992
Filed:
Oct. 22, 1990
Christopher P Banks, Saffron Walden, GB;
Edward Irving, Higher Whitley, GB;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
The present invention provides a method for making a metallic pattern on a substrate having a surface comprising bare metal in predetermined areas and metal coated by a resist in remaining areas which comprises (i) protecting the bare metal by coating with a film-forming resin, (ii) removing any film-forming resin from the resist, (iii) removing the resist from said remaining areas using a solvent which will not remove the film-forming resin, thereby exposing metal in said remaining areas, (iv) etching the metal exposed in (iii) using an etchant which does not remove the film-forming resin and (v) removing the film-forming resin with a suitable solvent.