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:
Sep. 19, 2006
Filed:
Jul. 22, 2003
Applicants:
Yasuo Murakuki, Kyoto, JP;
Hiroshige Hirano, Nara, JP;
Inventors:
Yasuo Murakuki, Kyoto, JP;
Hiroshige Hirano, Nara, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 5/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor memory device includes memory cell blocks () through () including a nonvolatile memory cell. The memory cell blocks () through () include chip-data storing regions () through () for storing chip data containing operation parameters of the semiconductor memory device and pass-flag storing regions (11) through () for storing pass flags which correspond to the respective chip-data storing regions and show the validity of the stored chip data. The chip-data storing regions store the same chip data.