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.

Date of Patent:
Jan. 24, 2012

Filed:

Apr. 27, 2009
Applicant:

Osamu Hirabayashi, Tokyo, JP;

Inventor:

Osamu Hirabayashi, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A semiconductor memory device comprises a memory cell array including a plurality of mutually intersecting word lines and bit lines, and a plurality of memory cells connected at intersections thereof and each having a read port and a write port provided independently; and a plurality of word line drivers operative to drive the word lines. The elements contained in the memory cell have respective sizes in common with the elements contained in the word line driver.


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