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公开(公告)号：US20240331725A1
公开(公告)日：2024-10-03
申请号：US18592111
申请日：2024-02-29
Applicant: Seagate Technology LLC
Inventor： Thomas Young Chang , Aneesh Venugopal , Philip Lisle Steiner
CPC classification number: G11B5/3146 , G11B5/66 , G11B2005/0021
Abstract: An apparatus is configured to include a first magnetic layer, a second magnetic layer and a break layer between the first magnetic layer and the second magnetic layer. The first magnetic layer includes a Curie temperature gradient between a first surface and a second surface of the first magnetic layer. The second magnetic layer includes a Curie temperature gradient between a third surface and a fourth surface of the second magnetic layer. The first magnetic layer has an average Curie temperature that is higher than the second magnetic layer.
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公开(公告)号：US12073862B2
公开(公告)日：2024-08-27
申请号：US18181458
申请日：2023-03-09
Applicant: Seagate Technology LLC
Inventor： Thomas Young Chang , Philip L. Steiner , Zengyuan Liu
CPC classification number: G11B5/7366 , G11B5/00813 , G11B5/02 , G11B2005/0021
Abstract: A heat-assisted magnetic recording (HAMR) device is configured to write regions of neutral polarity on a magnetic media during a same pass of the recording head in which other regions are written of positive polarity and negative polarity. The various disclosed write techniques may facilitate creation of “zero state” (substantially net zero polarity) transition zones between each pair of data bits of opposite polarity and/or may facilitate the encoding of three different logical states (e.g., 1, 0, and −1) on the media.
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公开(公告)号：US20230267959A1
公开(公告)日：2023-08-24
申请号：US17676664
申请日：2022-02-21
Applicant: Seagate Technology LLC
Inventor： Xiaomin Yang , Kim Yang Lee , Thomas Young Chang , ShuaiGang Xiao , Sha Zhu
CPC classification number: G11B5/84 , G03F7/0002 , G03F7/36
Abstract: The present disclosure relates to methods of manufacturing at least a portion of a magnetic layer of a magnetic recording disk. The methods include forming a plurality of sacrificial, discrete structures via imprint lithography. The sacrificial, discrete structures are used to form a plurality of three-dimensional segregant structures in a magnetic layer of the magnetic recording disk. The present disclosure also relates to corresponding magnetic recording disks.
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公开(公告)号：US11626136B1
公开(公告)日：2023-04-11
申请号：US17565188
申请日：2021-12-29
Applicant: Seagate Technology LLC
Inventor： Thomas Young Chang , Philip L. Steiner , Zengyuan Liu
Abstract: A heat-assisted magnetic recording (HAMR) device is configured to write regions of neutral polarity on a magnetic media during a same pass of the recording head in which other regions are written of positive polarity and negative polarity. The various disclosed write techniques may facilitate creation of “zero state” (substantially net zero polarity) transition zones between each pair of data bits of opposite polarity and/or may facilitate the encoding of three different logical states (e.g., 1, 0, and −1) on the media.
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公开(公告)号：US11626134B1
公开(公告)日：2023-04-11
申请号：US17565221
申请日：2021-12-29
Applicant: Seagate Technology LLC
Inventor： Thomas Young Chang , Philip L. Steiner , Zengyuan Liu
Abstract: A heat-assisted magnetic recording (HAMR) device is configured to write regions of neutral polarity on a magnetic media during a same pass of the recording head in which other regions are written of positive polarity and negative polarity. The various disclosed write techniques may facilitate creation of “zero state” (substantially net zero polarity) transition zones between each pair of data bits of opposite polarity and/or may facilitate the encoding of three different logical states (e.g., 1, 0, and −1) on the media.
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Patent Agency Ranking
公开(公告)号：US11136624B2
公开(公告)日：2021-10-05
申请号：US16862314
申请日：2020-04-29
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Kim Yang Lee , David S. Kuo , Thomas Young Chang , Xiaomin Yang , ShuaiGang Xiao , Koichi Wago
IPC: C12Q1/6874 , G01N33/487 , G01N27/447 , C12Q1/6869
Abstract: A DNA sequencing device, and related methods, include a nanochannel sized to receive a DNA strand, a first electrode member exposed within the nanochannel, and a second electrode member exposed within the nanochannel and spaced apart from the first electrode to form an electrode gap. The second electrode member has a wedge shaped profile, and the first and second electrode members are operable to detect a change in electronic signal as the DNA strand passes through the electrode gap.
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7.发明申请公开(公告)号：US20210245109A1
公开(公告)日：2021-08-12
申请号：US16924839
申请日：2020-07-09
Applicant: Seagate Technology LLC
Inventor： Thomas Young Chang , Kim Yang Lee , Tan G. Liu , Yautzong Hsu , Shuaigang Xiao
Abstract: A first wafer has a first stop layer deposited on a substrate, the substrate used to form a base support structure. A second wafer has a second stop layer deposited on a sacrificial substrate, and a filter layer deposited on the second stop layer. A rib layer is deposited on one of: the first stop layer of the first layer; or a third stop layer that is deposited over the filter layer. A rib pattern is formed in the rib layer. The first and second wafers are flip bonded such that the rib pattern is joined between the filter layer and the first stop layer. Elongated voids are formed within the filter layer. The base support structure is formed within the substrate of the first wafer such that there is a fluid flow path between the base support structure, the rib layer, and the elongated voids of the filter layer.
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公开(公告)号：US20230267958A1
公开(公告)日：2023-08-24
申请号：US17676650
申请日：2022-02-21
Applicant: Seagate Technology LLC
Inventor： ShuaiGang Xiao , Thomas Young Chang , Kim Yang Lee , Xiaomin Yang
IPC: G11B5/66
CPC classification number: G11B5/674
Abstract: The present disclosure relates to magnetic recording disks having a magnetic recording layer that includes a plurality of three-dimensional segregant structures. Each three-dimensional segregant structure extends from a first radius of the recording disk to a second radius of the recording disk, and each three-dimensional segregant structure is made of a first segregant material. The magnetic recording layer also includes a plurality of magnetic grains between adjacent three-dimensional segregant structures, and a second segregant material between adjacent magnetic grains. The present disclosure also relates to corresponding methods of manufacturing such a magnetic recording layer.
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9.发明授权公开(公告)号：US11714061B2
公开(公告)日：2023-08-01
申请号：US16854607
申请日：2020-04-21
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： David S. Kuo , Xiaomin Yang , ShuaiGang Xiao , Kim Yang Lee , Koichi R. Wago , Thomas Young Chang
IPC: B81C1/00 , G01N27/327 , B01L3/00 , C12Q1/6809 , G01N33/487 , C12Q1/6869 , B82Y5/00
CPC classification number: G01N27/3278 , B01L3/502707 , B01L3/502715 , B81C1/00547 , C12Q1/6809 , C12Q1/6869 , G01N33/48721 , B81C2201/0132 , B82Y5/00 , C12Q1/6869 , C12Q2565/631
Abstract: A DNA sequencing device, and related methods, include a nanopore or nanochannel structure, and a nanoelectrode. The nanoelectrode includes electrode members having free ends exposed within the nanopore or nanochannel structure, an electrode gap defined between of the free ends, and plated portions formed on the free ends to provide a reduced sized for the electrode gap.
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10.发明申请公开(公告)号：US20210054447A1
公开(公告)日：2021-02-25
申请号：US16935111
申请日：2020-07-21
Applicant: Seagate Technology LLC
Inventor： Thomas Young Chang
IPC: C12Q1/6869 , G01N33/487
Abstract: A DNA sequencing device having a first conductor electrically insulated from a second conductor, a voltage source and an amplifier electrically connected in series with the first conductor and the second conductor, a DNA polymerase attached to the first conductor and to the second conductor with matching biotinylated tag molecules, and an electric current monitor. A non-discriminating electrical signal is provided by the polymerase during pairing, which signal can be used as a marker to indicate that transcription is occurring between a single-type of free nucleotide and a base nucleotide of a template DNA strand.
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