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:
Apr. 04, 2006
Filed:
Dec. 30, 2003
Applicant:
Akira Maruyama, Yokohama, JP;
Inventor:
Akira Maruyama, Yokohama, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C 11/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ferroelectric memory device having a function of preventing destruction of data stored in an unselected memory cell. The ferroelectric memory device includes a protection circuit for protecting data in the unselected memory cell. The protection circuit is provided on an unselected-bitline-voltage supply line and an unselected-wordline-voltage supply line.