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:
Oct. 15, 1991
Filed:
May. 25, 1990
Masahiko Matsuo, Tokyo, JP;
Kazuo Nakaizumi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A memory circuit having a regular memory cell group, a redundant memory cell group, and an improved redundant decoder circuit for selecting the redundant memory cell group if there is any defect in the regular memory cell group. The redundant decoder circuit includes first and second programming circuits, and it is inoperative when the first programming circuit has not been programmed, operative when the first program element has been programmed and the second programming circuit has not been programmed, and inoperative when the second program circuit has been programmed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile