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:
Jun. 05, 2012
Filed:
May. 21, 2009
Guanghong Luo, Fremont, CA (US);
GE Yi, Pleasanton, CA (US);
Dujiang Wan, Fremont, CA (US);
Lei Wang, Fremont, CA (US);
Xiaohai Xiang, Danville, CA (US);
Ming Jiang, San Jose, CA (US);
Guanghong Luo, Fremont, CA (US);
Ge Yi, Pleasanton, CA (US);
Dujiang Wan, Fremont, CA (US);
Lei Wang, Fremont, CA (US);
Xiaohai Xiang, Danville, CA (US);
Ming Jiang, San Jose, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A method for providing a structure in a magnetic transducer is described. The method includes performing a first planarization that exposes a top surface of the magnetic transducer. This first planarization also terminates before a portion of a first planarization buffer layer is removed. The method also includes providing a second planarization buffer layer after the first planarization is performed. The second planarization buffer layer is above the first planarization buffer layer. The method also includes performing a second planarization. This second planarization does not completely remove the second planarization buffer layer. The method also includes performing a third planarization terminating after the first planarization buffer layer is exposed and before the first planarization buffer layer is completely removed.