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. 21, 1991
Filed:
Apr. 12, 1989
Applicant:
Inventor:
Takahiko Urai, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ; G11C / ;
U.S. Cl.
CPC ...
365200 ; 365185 ;
Abstract
A redundant circuit incorporated in a non-volatile memory device has two memory transistors for memorizing a bit of address information one of which is used in a diagnostic operation of component circuits executed before the packaging and the other of which is used for memorizing a bit of address information assigned to a defective memory cell after the packaging, and, for this reason, the other memory transistor is free from the degradation due to the heat attack encountered in the packaging process.
Quick Actions:
Urai, Takahiko. (1991). Redundant circuit incorporated in semiconductor memory device (U.S. Patent No. 5018104). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5018104
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile