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. 05, 2014
Filed:
Dec. 23, 2009
Christian Rene Bonhote, San Jose, CA (US);
Jeffrey S. Lille, Sunnyvale, CA (US);
Scott Arthur Macdonald, San Jose, CA (US);
Xhavin Sinha, New Westminster, CA (US);
Petrus Antonius Van Der Heijden, San Jose, CA (US);
Christian Rene Bonhote, San Jose, CA (US);
Jeffrey S. Lille, Sunnyvale, CA (US);
Scott Arthur MacDonald, San Jose, CA (US);
Xhavin Sinha, New Westminster, CA (US);
Petrus Antonius Van Der Heijden, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic write head for data recording having a magnetic write pole with a stepped magnetic shell structure that defines a secondary flare point. The secondary flare point defined by the magnetic shell portion can be more tightly controlled with respect to its distance from the air bearing surface (ABS) of the write head than can a traditional flare point that is photolithographically on the main pole structure. This allows the effective flare point of the write head to be moved much closer to the ABS than would otherwise be possible using currently available tooling and photolithography techniques. The write head also includes a non-magnetic spacer layer formed over the magnetic shell structure that is recessed from the ABS by a distance that is greater than that of the magnetic shell portion. A magnetic shield is formed over the magnetic shell and non-magnetic spacer.