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. 02, 2011
Filed:
Dec. 03, 2007
Wen-chien David Hsiao, San Jose, CA (US);
Yimin Hsu, Sunnyvale, CA (US);
Quan-chiu Harry Lam, San Jose, CA (US);
Yansheng Luo, Fremont, CA (US);
Vladimir Nikitin, Campbell, CA (US);
Changqing Shi, Mountain View, CA (US);
Wen-Chien David Hsiao, San Jose, CA (US);
Yimin Hsu, Sunnyvale, CA (US);
Quan-chiu Harry Lam, San Jose, CA (US);
Yansheng Luo, Fremont, CA (US);
Vladimir Nikitin, Campbell, CA (US);
Changqing Shi, Mountain View, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A magnetic write head for perpendicular magnetic data recording having a notched write pole for reduced magnetic core width (MCW) dependence on skew. The write pole is configured with a notch that can extend to or slightly beyond the flare point of the write pole, and is formed on the leading portion of the write pole. The notch can have a notch depth, as measured from the ABS of 50-200 nm or about 120 nm. The notch can have a notch height, measured in the down track direction that is 40-90 nm or 20-90 percent of the write pole height.