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:
Dec. 06, 1994
Filed:
Jun. 30, 1993
Applicant:
Inventor:
Hachiro Yamada, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365 49 ; 365185 ; 36523006 ;
Abstract
An associative memory device has associative memory cells arranged in matrix and each implemented by a parallel combination of two electrically erasable and programmable non-volatile memory transistors, and a multi-bit data code stored in a row of associative memory cells allows the two electrically erasable and programmable non-volatile memory transistors of each associative memory cell to selectively enter the programmed state so that a multi-bit key code is checked to see whether or not drain current flows through the electrically erasable and programmable non-volatile memory transistors into a source line.