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:
Feb. 03, 2004
Filed:
Jan. 04, 2002
Michael Kevin Minor, Gibsonia, PA (US);
Robert Earl Rottmayer, Wexford, PA (US);
Michael Allen Seigler, Pittsburgh, PA (US);
Andrew Robert Eckert, Pittsburgh, PA (US);
Mark William Covington, Pittsburgh, PA (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A write head comprises a yoke including a top pole and a bottom pole, the top pole including a layer of insulating material, a layer of a first magnetic material positioned on a surface of the layer of insulating material, the first magnetic material having a first end positioned adjacent to an air bearing surface of the write pole, and a layer of a second magnetic material positioned on the surface of the layer of insulating material, the second magnetic material having a lower magnetic moment than the first magnetic material and being positioned to conduct magnetic flux between the return pole and the layer of first magnetic material. The method of constructing the write head and a disc drive including the write head are also included.