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:
Aug. 15, 2000
Filed:
Jul. 14, 1998
Applicant:
Inventor:
Yoshihiro Tada, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
36518524 ; 36518503 ; 36518505 ; 36518511 ;
Abstract
In a semiconductor memory in which each memory cell is composed of a transistor having a floating gate between a control gate and a conducting channel formed between a drain and a source and in which storage of data is achieved on the principle that the threshold voltage of the transistor varies with the amount of electric charge accumulated in the floating gate, while a transistor constituting a memory cell from which data is read out is supplied with a predetermined current, the control gate and the drain of that transistor are kept short-circuited.