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:
May. 07, 1996
Filed:
Oct. 13, 1994
Applicant:
Inventors:
Tetsuji Nakakuma, Takatsuki, JP;
Tatsumi Sumi, Mishima, JP;
Hiroshige Hirano, Nara, JP;
George Nakane, Nara, JP;
Nobuyuki Moriwaki, Kyoto, JP;
Toshio Mukunoki, Takatsuki, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365145 ; 365201 ; 36518901 ;
Abstract
A semiconductor memory device comprising a pair of bit lines, a word line, a cell plate electrode, a memory cell connected to each of the bit lines, the word line and the cell plate electrode, and a prevention means that permits only a predetermined number of readouts of data stored in the memory cell, after which the data is destroyed and is not retrieved with subsequent readout attempts.