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:
Jan. 13, 2026
Filed:
Jan. 13, 2022
SK Keyfoundry Inc., Cheongju-si, KR;
Yang Beom Kang, Cheongju-si, KR;
SK keyfoundry Inc., Cheongju-si, KR;
Abstract
A manufacturing method of a non-volatile memory device, includes forming a floating gate on a substrate, depositing a first insulating layer on the floating gate, depositing a second insulating layer on the first insulating layer, depositing a third insulating layer on the second insulating layer, performing a first etch-back process on the third insulating layer to form a spacer-shaped third insulating layer on the second insulating layer, performing a second etch-back process on the second insulating layer to form a spacer-shaped second insulating layer on the first insulating layer, and performing a wet etching to remove the spacer-shaped third insulating layer to form a spacer-shaped first insulating layer and the spacer-shaped second insulating layer on the floating gate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile