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:
Jul. 14, 2009
Filed:
Apr. 10, 2008
Nurul Amin, Woodbury, MN (US);
Yuming Zhou, Lakeville, MN (US);
Kaizhong Gao, Bloomington, MN (US);
Patrick J. Ryan, St. Paul, MN (US);
Steven Kalderon, Minneapolis, MN (US);
Song S. Xue, Edina, MN (US);
Shaoping LI, Naperville, IL (US);
Mark T. Kief, Savage, MN (US);
Nurul Amin, Woodbury, MN (US);
Yuming Zhou, Lakeville, MN (US);
Kaizhong Gao, Bloomington, MN (US);
Patrick J. Ryan, St. Paul, MN (US);
Steven Kalderon, Minneapolis, MN (US);
Song S. Xue, Edina, MN (US);
Shaoping Li, Naperville, IL (US);
Mark T. Kief, Savage, MN (US);
Seagate Technology LLC, Scotts Valley, CA (US);
Abstract
A transducing head has a main pole and at least one magnetic element (such as a return pole or a shield) which provides a potential return path for a magnetic field produced by the main pole. The magnetic element is spaced from the main pole. The magnetic element has a first edge closest to the main pole and a second edge furthest from the main pole. Permeability of the magnetic element increases from the first edge to the second edge.