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:
Jun. 21, 2011
Filed:
Mar. 21, 2007
Applicant:
Shigeru Kinoshita, Kanagawa-ken, JP;
Inventor:
Shigeru Kinoshita, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 16/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor integrated circuit device includes a memory cell array. In the memory cell array, first memory cells of floating gate type are mixed with second memory cells of floating gate type. The second memory cell is sandwiched between the first memory cells. The first memory cells of floating gate type are configured to store m-level data, where m is a natural number of 2 or more. The second memory cells of floating gate type is configured to store n-level data, where n is a natural number greater than m.