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:
Mar. 20, 2018
Filed:
Nov. 23, 2015
Seagate Technology Llc, Cupertino, CA (US);
Wei Tian, Eden Prairie, MN (US);
Venkateswara Rao Inturi, Shakopee, MN (US);
Dong Lin, Eden Prairie, MN (US);
Huaqing Yin, Eden Prairie, MN (US);
Jiaoming Qiu, Maple Grove, MN (US);
SEAGATE TECHNOLOGY LLC, Cupertino, CA (US);
Abstract
A write head having a main pole, a gap layer, and at least two sacrificial layers. In accordance with one embodiment, a method includes depositing a non-magnetic gap layer of material above a main pole layer of magnetic material; depositing a sacrificial layer of material above the non-magnetic gap layer of material; etching a portion of the sacrificial layer of material while not entirely removing the sacrificial layer of material; and depositing additional sacrificial material to the etched sacrificial layer.