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. 08, 2008
Filed:
Jun. 16, 2005
Applicant:
Makoto Takizawa, Kanagawa-ken, JP;
Inventor:
Makoto Takizawa, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11C 5/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A nonvolatile semiconductor memory device comprises, an internal memory cell array formed in internal area of a surface of semiconductor substrate, a row decoder and a column decoder formed in the internal area to select memory cell of the internal memory cell array, a peripheral circuit formed in the internal area to write and read a selected memory cell in the memory cell array, and external memory cell array formed in external area of the surface of the semiconductor substrate arranged beside the internal memory cell array and electrically separated from the internal memory cell array.