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:
Jul. 15, 1997
Filed:
Sep. 26, 1995
Kiyokazu Ishige, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
In a method for manufacturing a semiconductor memory device including a plurality of field areas, a plurality of electrode areas, a plurality of source areas and drain areas sunrounded by the field areas and the electrode areas, before forming field insulating layers for isolating the source and drain regions, impurities are introduced into the field areas between the source regions, to create an additional source region below the field insulating layer for isolating the source regions. The additional source regions are linked between the source regions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile