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 6977843 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 20, 2005

Filed:

May. 10, 2004
Applicants:

Koji Hamaguchi, Tenri, JP;

Masaru Nawaki, Nara, JP;

Yoshinao Morikawa, Ikoma, JP;

Hiroshi Iwata, Ikoma-gun, JP;

Akihide Shibata, Nara, JP;

Inventors:

Koji Hamaguchi, Tenri, JP;

Masaru Nawaki, Nara, JP;

Yoshinao Morikawa, Ikoma, JP;

Hiroshi Iwata, Ikoma-gun, JP;

Akihide Shibata, Nara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C016/04 ;
U.S. Cl.
CPC ...
Abstract

A semiconductor memory device has a malfunction prevention device and a nonvolatile memory. The nonvolatile memory is a memory cell including: a gate electrode formed on a semiconductor layer via a gate insulating film; a channel region disposed below the gate electrode; diffusion regions disposed on both sides of the channel region and having a conductive type opposite to that of the channel region; and memory functional units formed on both sides of the gate electrode and having a function of retaining charges.


Find Patent Forward Citations

Hamaguchi, Koji. (2005). Semiconductor memory device with malfunction prevention device, and portable electronic apparatus using the same (U.S. Patent No. 6977843). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6977843

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