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:
Feb. 22, 2022
Filed:
Feb. 16, 2021
Applicant:
Western Digital Technologies, Inc., San Jose, CA (US);
Inventors:
Sukumar Rajauria, San Jose, CA (US);
Pierre-Olivier Jubert, San Jose, CA (US);
Richard M. Brockie, San Jose, CA (US);
Assignee:
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B 11/10 (2006.01); G11B 5/00 (2006.01); G11B 27/36 (2006.01);
U.S. Cl.
CPC ...
G11B 27/36 (2013.01); G11B 2005/0021 (2013.01);
Abstract
A data storage device is disclosed comprising a head actuated over a magnetic media, wherein the head comprises a laser and a near field transducer (NFT). A thermal gradient produced in the magnetic media by the NFT is periodically measured, and a failure of the NFT is predicted based on a slope of the thermal gradient measurements.