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. 07, 2004
Filed:
Mar. 24, 2003
Applicant:
Inventors:
Masashi Agata, Osaka, JP;
Kazunari Takahashi, Shiga, JP;
Masanori Shirahama, Shiga, JP;
Naoki Kuroda, Kyoto, JP;
Hiroyuki Sadakata, Osaka, JP;
Ryuji Nishihara, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C 1/140 ;
U.S. Cl.
CPC ...
G11C 1/140 ;
Abstract
A semiconductor memory device has a plurality of memory cells each having a first transistor, a second transistor having a source or drain connected to one portion of the source or drain of the first transistor, and a third transistor having a source or drain connected to the other portion of the source or drain of the first transistor. The first transistor accumulates, in the channel thereof, charges transferred from the second and third transistors.