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:
Aug. 11, 2015
Filed:
Mar. 16, 2010
Tryg R. Jensen, Roseville, MN (US);
Adam A. Brodd, Minneapolis, MN (US);
C. Thomas Jennings, Woodbury, MN (US);
David J. Owen, Woodbury, MN (US);
Tryg R. Jensen, Roseville, MN (US);
Adam A. Brodd, Minneapolis, MN (US);
C. Thomas Jennings, Woodbury, MN (US);
David J. Owen, Woodbury, MN (US);
SONY CORPORATION, Tokyo, JP;
Abstract
Composite magnetic recording media are described. A composite structure is a structure that is formed of multiple components. For example, a composite magnetic recording medium may include a substrate, an underlayer formed over the substrate, the underlayer defining a coating surface, and a magnetic layer formed over the coating surface of the underlayer. Composite magnetic recording media constructed according to the materials and techniques disclosed may provide dimensional flexibility while exhibiting improved physical or electromagnetic characteristics. In some examples, dimensional flexibility may be achieved by pairing a substrate greater than or equal to approximately 4000 nanometers thick with an underlayer less than or equal to approximately 890 nanometers thick.