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:
Apr. 07, 2009
Filed:
Mar. 30, 2007
Michael C. Gaidis, Wappingers Falls, NY (US);
Lawrence A. Clevenger, LaGrangeville, NY (US);
Timothy J. Dalton, Ridgefield, CT (US);
John K. Debrosse, Colchester, VT (US);
Louis L. C. Hsu, Fishkill, NY (US);
Carl Radens, LaGrangeville, NY (US);
Keith Kwong-hon Wong, Wappingers Falls, NY (US);
Chih-chao Yang, Glenmont, NY (US);
Michael C. Gaidis, Wappingers Falls, NY (US);
Lawrence A. Clevenger, LaGrangeville, NY (US);
Timothy J. Dalton, Ridgefield, CT (US);
John K. DeBrosse, Colchester, VT (US);
Louis L. C. Hsu, Fishkill, NY (US);
Carl Radens, LaGrangeville, NY (US);
Keith Kwong-Hon Wong, Wappingers Falls, NY (US);
Chih-Chao Yang, Glenmont, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method of forming a magnetic domain wall memory apparatus with write/read capability includes forming a plurality of coplanar shift register structures each comprising an elongated track formed from a ferromagnetic material having a plurality of magnetic domains therein, the shift register structures further having a plurality of discontinuities therein to facilitate domain wall location: forming a magnetic read element associated with each of the shift register structures: and forming a magnetic write element associated with each of the shift register structures, the magnetic write element further comprising a write wire having a constriction therein, the constriction located at a point corresponding to the location of one of the plurality of discontinuities in the associated shift register structure.