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:
Apr. 18, 2006
Filed:
Jul. 30, 2003
Perpendicular recording magnetic head with a write shield magnetically coupled to a first pole piece
Gautam Khera, Morgan Hill, CA (US);
Quang Le, San Jose, CA (US);
Son Van Nguyen, Los Gatos, CA (US);
Aron Pentek, San Jose, CA (US);
Mason Lamar Williams, Iii, San Jose, CA (US);
Gautam Khera, Morgan Hill, CA (US);
Quang Le, San Jose, CA (US);
Son Van Nguyen, Los Gatos, CA (US);
Aron Pentek, San Jose, CA (US);
Mason Lamar Williams, III, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A perpendicular recording write head has ferromagnetic first and second pole pieces which are connected at a back gap and an insulation stack with a write coil layer embedded therein is located between the first and second pole pieces and between a head surface of the write head and the back gap. The second pole piece has a pole tip which is located at the head surface and a recessed ferromagnetic write shield layer. A nonmagnetic isolation layer is located between the second pole piece and the write shield layer and at least one ferromagnetic stud is magnetically connected between the first pole piece layer and the write shield layer and is located between the head surface and the insulation stack.