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Patent Agency Ranking
公开(公告)号：US10373632B2
公开(公告)日：2019-08-06
申请号：US15865201
申请日：2018-01-08
Applicant: Seagate Technology LLC
Inventor： John L. Brand , James D. Kiely
Abstract: Provided herein is a magnetic write head including a near field transducer and a magnetic recording media including a media lubricant. The media lubricant includes a first portion and a second portion. The second portion of the media lubricant is evaporated in response to heat emitted from the near field transducer. The second portion of the media lubricant that is evaporated removes a contaminant over the near field transducer.
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公开(公告)号：US10529364B2
公开(公告)日：2020-01-07
申请号：US15433829
申请日：2017-02-15
Applicant: Seagate Technology LLC
Inventor： John L. Brand , James D. Kiely
Abstract: Provided herein is a magnetic write head including a near field transducer and a magnetic recording media including a media lubricant. The media lubricant includes a first portion and a second portion. The second portion of the media lubricant is evaporated in response to heat emitted from the near field transducer. The second portion of the media lubricant that is evaporated removes a contaminant over the near field transducer.
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公开(公告)号：US12190922B1
公开(公告)日：2025-01-07
申请号：US17543993
申请日：2021-12-07
Applicant: Seagate Technology LLC
Inventor： Michael A. Seigler , Peng Zhang , David James Ellison , James D. Kiely , Edwin F. Rejda
Abstract: A method involves forming a recording head that comprises a waveguide, a write pole, and a near-field transducer proximate the write pole. The near-field transducer has an extended portion extending towards a surface of the recording head and operable to direct plasmons to a recording medium. The surface of the recording head is lapped to form a lapped surface. A resist or hardmask is patterned on the lapped surface in a region that encompasses the extended portion. The lapped surface is etched with the resist or hardmask pattern to form a media-facing surface such that the extended portion protrudes beyond the media-facing surface by a first distance, and the resist or hardmask is removed.
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公开(公告)号：US11763847B1
公开(公告)日：2023-09-19
申请号：US17858277
申请日：2022-07-06
Applicant: Seagate Technology LLC
Inventor： David James Ellison , James D. Kiely , Neil Zuckerman , Edwin F. Rejda , Joseph Michael Stephan
CPC classification number: G11B13/08 , G11B2005/0021
Abstract: The present disclosure relates to a recording head that includes a write pole extending to a media-facing surface of the recording head; a near-field transducer extending to a media-facing surface of the recording head; a trailing return pole positioned between the write pole and the trailing edge; and a recessed portion that is recessed relative to the media-facing surface by a distance when no power is applied to the recording head. The trailing return pole is located in the recessed portion. The present disclosure also includes relates methods of making and detecting contact between a recording head and recording medium.
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公开(公告)号：US11222657B1
公开(公告)日：2022-01-11
申请号：US17138508
申请日：2020-12-30
Applicant: Seagate Technology LLC
Inventor： Michael A. Seigler , Peng Zhang , David James Ellison , James D. Kiely , Edwin F. Rejda
Abstract: A recording head has a waveguide that delivers optical energy from an energy source and a write pole extending to a media-facing surface of the recording head. The recording head also has a near-field transducer coupled to receive the optical energy from the waveguide and emit surface plasmons from the media-facing surface towards a recording medium while the write pole applies a magnetic field to the recording medium. The near-field transducer has an extended portion that, as-manufactured, protrudes beyond the media-facing surface by a first distance.
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