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. 24, 2009
Filed:
Mar. 03, 2006
Lei Larry Zhang, San Jose, CA (US);
Danning Yang, Fremont, CA (US);
Honglin Zhu, Fremont, CA (US);
Ki Sup Chung, San Jose, CA (US);
Francis H. Liu, Fremont, CA (US);
Yingjiang Chen, Fremont, CA (US);
Lei Larry Zhang, San Jose, CA (US);
Danning Yang, Fremont, CA (US);
Honglin Zhu, Fremont, CA (US);
Ki Sup Chung, San Jose, CA (US);
Francis H. Liu, Fremont, CA (US);
Yingjiang Chen, Fremont, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A method and system for providing a magnetic recording transducer are disclosed. The method and system include providing a metallic underlayer directly on a portion of an insulating layer. The method and system also include forming a perpendicular magnetic recording pole on the metallic underlayer. The perpendicular magnetic recording pole has a top, a bottom narrower than the top, and sides. The perpendicular magnetic recording pole has a pole removal rate. The method and system also include providing an insulator having an insulator removal rate. The insulator substantially surrounds at least the sides of the perpendicular magnetic recording pole. The metallic underlayer has a removal rate that is at least one of less than the insulator removal rate and substantially equal to the pole removal rate.