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:
Mar. 22, 2005
Filed:
Jul. 24, 2002
Mitsuhiro Tomoeda, Hyogo, JP;
Atsushi Ohba, Hyogo, JP;
Toshimasa Makino, Hyogo, JP;
Renesas Technology Corp., Tokyo, JP;
Mitsubishi Electric Engineering Company Limited, Tokyo, JP;
Abstract
In a memory block that is to be subjected to an erasure operation, voltage of the ground level is selectively supplied to only one word line. By applying an erasure pulse to a source line, memory cell transistors have their threshold voltages shifted. As to another word line, a pulse of a positive voltage is supplied in synchronization to the application of an erasure pulse to the source line. Another group of memory cell transistors do not have their threshold voltages shifted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile