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. 07, 1991
Filed:
Nov. 28, 1988
Naruaki Takada, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A semiconductor memory of a junction destruction type includes programmable read-only memory (PROM) elements arranged in the form of a matrix on a substrate, bit lines connected to emitter regions of the PROM elements, and word lines connected to collector regions of the PROM elements, wherein the emitter regions of the PROM elements have a circular shape. Emitter regions have an opposite type of conductivity to that of the substrate. The bit lines are commonly connected to the emitter regions formed in the collector regions, respectively, to thereby increase density of the memory device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile