US 3,890,195

GPTKB entity

Properties (13)
Predicate Object
gptkbp:instanceOf patent
gptkbp:abstract A method for making a semiconductor device.
gptkbp:applicationNumber 05/368,155
gptkbp:assignee The_United_States_of_America_as_represented_by_the_Department_of_Energy
gptkbp:citedBy US_4,000,000
gptkbp:fieldOfInvention semiconductor technology
https://www.w3.org/2000/01/rdf-schema#label US 3,890,195
gptkbp:inventor gptkb:Robert_H._McDonald
gptkbp:issuedBy June 24, 1975
gptkbp:patentClassification H01L 21/00
gptkbp:priorityDate March 31, 1972
gptkbp:status expired
gptkbp:title Method of making a semiconductor device