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. 27, 2010
Filed:
Sep. 12, 2007
Qiang Ling, Pittsburgh, PA (US);
Mehmet Fatih Erden, Pittsburgh, PA (US);
Alexei H. Sacks, Edina, MN (US);
Sundeep Chauhan, Edina, MN (US);
Qiang Ling, Pittsburgh, PA (US);
Mehmet Fatih Erden, Pittsburgh, PA (US);
Alexei H. Sacks, Edina, MN (US);
Sundeep Chauhan, Edina, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A patterned recording media comprises a segment and a null pattern formed in the segment. The segment comprises first and second rows of discrete magnetic elements separated by a non-magnetic material, and a row of non-magnetic material positioned between the first and second rows. The null pattern comprises consecutive groups of the discrete magnetic elements in the first and second rows of the segment. Each group in the first row has a magnetic polarity that is opposite the magnetic polarity of adjoining groups in the first row. Each group in the second row has a magnetic polarity that is opposite the magnetic polarity of adjoining groups in the second row.