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:
Apr. 10, 2018
Filed:
Feb. 25, 2016
Western Digital (Fremont), Llc, Fremont, CA (US);
Jinqiu Zhang, Fremont, CA (US);
Feng Liu, San Ramon, CA (US);
Xiaoyu Yang, Union City, CA (US);
Ming Jiang, San Jose, CA (US);
Xiaotian Zhou, Fremont, CA (US);
Zeyu Ma, Dublin, CA (US);
Hai Sun, Milpitas, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A perpendicular magnetic recording (PMR) writer is configured to magnetically record data on a rotatable disk surface. The PMR writer including a pole tip, side shields, an air-bearing surface (ABS) region, a yoke region comprising Silicon Dioxide (SiO2), side gaps and a plurality of throat regions. The side gaps are arranged respectively between the pole tip and the side shields and include SiO2. A side gap width of the plurality of throat regions increases with a side shield throat height above the ABS region for each of the throat regions. The side gap width has a different width variation in each of the throat regions.