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. 11, 2014
Filed:
Mar. 16, 2012
Applicants:
Wanxue Zeng, Pleasanton, CA (US);
Weimin SI, San Ramon, CA (US);
Ying Hong, Los Gatos, CA (US);
Zhigang Bai, Milpitas, CA (US);
Inventors:
Wanxue Zeng, Pleasanton, CA (US);
Weimin Si, San Ramon, CA (US);
Ying Hong, Los Gatos, CA (US);
Zhigang Bai, Milpitas, CA (US);
Assignee:
Western Digital (Fremont), LLC, Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/23 (2006.01); B44C 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A writer main pole for a perpendicular magnetic recording system is provided. The writer pole has a tunable bottom gap to side gap ratio, and may be formed using deposition of a first seed layer through an ion beam deposition process, deposition of a second seed layer through a physical vapor deposition process, and deposition of a non-magnetic gap layer through a chemical vapor deposition process.