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. 03, 2019
Filed:
May. 06, 2015
Applicant:
Hgst Netherlands B.v., Amsterdam, NL;
Inventors:
Takuya Matsumoto, Sunnyvale, CA (US);
Vijay Prakash Singh Rawat, San Jose, CA (US);
Barry C. Stipe, San Jose, CA (US);
Assignee:
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/012 (2006.01); G11B 5/60 (2006.01); G11B 5/31 (2006.01); G11B 5/00 (2006.01);
U.S. Cl.
CPC ...
G11B 5/6088 (2013.01); G11B 5/314 (2013.01); G11B 5/3106 (2013.01); G11B 5/3133 (2013.01); G11B 2005/0021 (2013.01);
Abstract
Embodiments disclosed herein generally relate to a HAMR head. The HAMR head includes a main pole, a waveguide and a NFT disposed between the main pole and the waveguide. The NFT includes an antenna, and the antenna includes a first portion and a second portion. The second portion may be made of a material having a higher melting point than the material of the first portion. Having the second portion helps reduce the temperature rise of the NFT and reduce the laser power applied to the NFT.