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:
Sep. 16, 2014
Filed:
Dec. 06, 2011
Chengtao R. Yu, Mountain House, CA (US);
Dehua Han, Fremont, CA (US);
Ying Hong, Morgan Hill, CA (US);
Feng Liu, San Ramon, CA (US);
Laurence L. Chen, Hayward, CA (US);
Zhanjie LI, Pleasanton, CA (US);
Zhigang Bai, Milpitas, CA (US);
Yu Lo, Foster City, CA (US);
Yunfei Ding, Fremont, CA (US);
Chengtao R. Yu, Mountain House, CA (US);
Dehua Han, Fremont, CA (US);
Ying Hong, Morgan Hill, CA (US);
Feng Liu, San Ramon, CA (US);
Laurence L. Chen, Hayward, CA (US);
Zhanjie Li, Pleasanton, CA (US);
Zhigang Bai, Milpitas, CA (US);
Yu Lo, Foster City, CA (US);
Yunfei Ding, Fremont, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A method and system provide a touchdown sensor for use in disk drive. The touchdown sensor includes a sensor layer including a plurality of magnetic layers interleaved with at least one nonmagnetic layer. The plurality of magnetic layers are magnetically coupled and single domain. Further, the sensor has a temperature coefficient of resistivity (TCR) of at least 0.15%/° C.