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:
Nov. 08, 2011
Filed:
Jul. 20, 2007
Manabu Oumi, Chiba, JP;
Masakazu Hirata, Symbiosis, SG;
Majung Park, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A head using near field light is formed, which is characterized by including a near field light assisted magnetic recording head characterized by including a pyramid tipconfigured to generate near field light at the tip end thereof, in which magnetic recording is conducted by assistance of the near field light, a magnetic recording elementis formed of a first magnetic poleand a second magnetic pole, the first magnetic pole is formed of a first thin film on a first side surface of the tip, the second magnetic pole is formed of a second thin film on a second side surface facing to the first side surface of the tip, and the first thin film and the second thin film have different film thicknesses.