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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.:

US 4554646 B1

PDFFull Text
Date of Patent:
Nov. 19, 1985

Filed:

Oct. 17, 1983

Semiconductor memory device

Applicant:
Inventors:

Masahiko Yoshimoto, Itami, JP;

Tsutomu Yoshihara, Itami, JP;

Kenji Anami, Itami, JP;

Hirofumi Shinohara, Itami, JP;

Assignee:

Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;

Attorney:

Lowe King Price & Becker

Primary Examiner:

Terrell W Fears

Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365189 ; 365230 ;
Abstract

A memory matrix is segmented in the direction of columns into a plurality of groups of memory cells. The memory cells are accessible through respective preceding word lines each of which is provided for each of the rows of the matrix and commonly to all of the groups of the memory cells and group word lines each of which is provided per group and per row, so that a path for column current is set up during access time only in the column which belongs to a particular group including a particular memory to be accessed.

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Yoshimoto, Masahiko. (1985). Semiconductor memory device (U.S. Patent No. 4554646). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4554646

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