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:
Nov. 02, 1976
Filed:
Dec. 12, 1974
Sebastian Vito Mastrangelo, Hockessin, DE (US);
E. I. Du Pont de Nemours and Co., Wilmington, DE (US);
Abstract
A diode-forming layered structure comprising a semiconductor body having a layered coating thereon, said semiconductor having a surface region of given conductivity type, said coating being a dispersed metal particle-polymer coating which before electrical activation displays a high electrical resistance but after electrical activation is highly conductive, said electrical activation resulting in the formation of a diode in the zone of contact between the coating and the semiconductor body, a plurality of such layered structures, in a two-dimensional array based on a common semiconductor body, being useful in the formation of a read-only memory (ROM), an alterable read-only memory (AROM) or a random access memory (RAM).