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:
Oct. 18, 1977
Filed:
Dec. 22, 1976
Robert William Peiffer, Jackson, NJ (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
An improved process for preparing printed circuit boards whereby through-holes are introduced into an element comprising a substrate, a photosensitive resist layer, and a superposed, strippable support. The through-holes are catalyzed prior to removal of the strippable support. After exposure the imaged photoresist is developed, the catalyzed-through-holes are electrolessly plated and the printed circuit is prepared using the developed image. Single sided, two or more layered printed circuit boards with plated-through-holes and interconnections can be prepared by this process.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile