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, 2020
Filed:
Mar. 29, 2019
Applicant:
Seagate Technology Llc, Cupertino, CA (US);
Inventor:
Narayanan Ramakrishnan, New City, NY (US);
Assignee:
Seagate Technology LLC, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 33/14 (2006.01); G11B 5/60 (2006.01); H02N 2/08 (2006.01); H02N 2/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/6076 (2013.01); G11B 5/6058 (2013.01); G11B 5/6082 (2013.01); H02N 2/08 (2013.01);
Abstract
A method includes producing a first surface acoustic wave (SAW) on a magnetic head slider using a first interdigitated transducer (IDT), wherein the SAW has a first set of wave characteristics. The method also includes receiving the first SAW at a second IDT on the magnetic head slider. The method also includes analyzing the SAW for a second set of wave characteristics. The method also includes determining, based on the analyzing, that a substance having at least one characteristic is located in a path of the SAW on the magnetic head slider.