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:
Oct. 03, 2006
Filed:
Dec. 18, 2002
Qing He, Fremont, CA (US);
Hirohiko Kamimura, Cupertino, CA (US);
Shuhei Otani, Fremont, CA (US);
Yugang Wang, Milpitas, CA (US);
David J. Seagle, Morgan Hill, CA (US);
Qing He, Fremont, CA (US);
Hirohiko Kamimura, Cupertino, CA (US);
Shuhei Otani, Fremont, CA (US);
Yugang Wang, Milpitas, CA (US);
David J. Seagle, Morgan Hill, CA (US);
Western Digital (Fremont), Inc., Fremont, CA (US);
Abstract
A T-shaped pole tip portion of an upper pole of a write element for a magnetic disk drive is provided. One end of the pole tip portion, constituting the bottom of the 'T,' forms a narrow nose segment at an air bearing surface, while a wing segment at the opposite end of the pole tip portion constitutes the cross-bar top of the 'T.' A transition segment extends between the nose segment and the wing segment. A yoke portion of the upper pole includes a surface that is parallel to the air bearing surface and recessed therefrom by a PR depth. The transition segment does not widen significantly until after the PR depth, accordingly, the wing segment is recessed from the air bearing surface by more than the PR depth.