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. 20, 2004
Filed:
Feb. 10, 1999
Zhong Wu, Fremont, CA (US);
Rajiv Ranjan, San Jose, CA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
Magnetic recording media exhibiting improved Hr, SNR and S*, suitable for high areal recording density, are obtained by forming a substantially uniform patterned Al or Al alloy layer on a non-magnetic substrate which is substantially replicated in subsequently applied layers to form a data zone. Embodiments include sputtering depositing an Al or Al alloy layer on the substrate and anodizing the sputtered layer to form a plurality of substantially uniform hexagonal cells comprising aluminum oxide. The hexagonal pattern is replicated in a subsequently deposited and epitaxially grown magnetic layer such that the magnetic grains are separated, thereby reducing magnetostatic interactions therebetween.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile