Patents by Inventor Dion Song

Dion Song has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9324351
    Abstract: A recording head that includes at least one protection feature that prevents at least one other feature of the recording head from directly colliding with a data storage medium with which the recording head communicates. The recording head includes a transducer element having a leading edge and a trailing edge. The recording head also includes a transducer element heater located closer to the leading edge of the transducer element than the trailing edge of the transducer element. A contact pad is interposed between the leading edge of the transducer element and the transducer element heater to prevent the transducer element from directly colliding with the data storage medium.
    Type: Grant
    Filed: November 7, 2013
    Date of Patent: April 26, 2016
    Assignee: Seagate Technology LLC
    Inventors: Xiaohang Kong, Neil Zuckerman, Erik Hutchinson, Raul Andruet, Dion Song, Christopher Rea
  • Publication number: 20150124354
    Abstract: A recording head that includes at least one protection feature that prevents at least one other feature of the recording head from directly colliding with a data storage medium with which the recording head communicates. The recording head includes a transducer element having a leading edge and a trailing edge. The recording head also includes a transducer element heater located closer to the leading edge of the transducer element than the trailing edge of the transducer element. A contact pad is interposed between the leading edge of the transducer element and the transducer element heater to prevent the transducer element from directly colliding with the data storage medium.
    Type: Application
    Filed: November 7, 2013
    Publication date: May 7, 2015
    Applicant: Seagate Technology LLC
    Inventors: Xiaohang Kong, Neil Zuckerman, Erik Hutchinson, Raul Andruet, Dion Song, Christopher Rea
  • Patent number: 9019664
    Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for one or more regions of reduced anisotropy proximal to a sensor stack within a shielding structure.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: April 28, 2015
    Assignee: Seagate Technology LLC
    Inventors: Dion Song, Dimitar Velikov Dimitrov, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
  • Publication number: 20140340793
    Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for one or more regions of reduced anisotropy proximal to a sensor stack within a shielding structure.
    Type: Application
    Filed: May 20, 2013
    Publication date: November 20, 2014
    Applicant: Seagate Technology LLC
    Inventors: Dion Song, Dimitar Velikov Dimitrov, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
  • Patent number: 8659855
    Abstract: A magnetoresistive read sensor with improved sensitivity and stability is described. The sensor is a trilayer stack positioned between two electrodes. The trilayer stack has two free layers separated by a nonmagnetic layer and a biasing magnet positioned at the rear of the stack and separated from the air bearing surface. Current in the sensor is confined to regions close to the air bearing surface by an insulator layer to enhance reader sensitivity.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: February 25, 2014
    Assignee: Seagate Technology LLC
    Inventors: Dimitar Velikov Dimitrov, Dion Song, Mark William Covington, James Wessel
  • Patent number: 8553369
    Abstract: A magnetic element capable of detecting changes in magnetic states, such as for use as a read sensor in a data transducing head or as a solid-state non-volatile memory element. In accordance with various embodiments, the magnetic element includes a magnetically responsive stack or lamination with a first areal extent. The stack includes a spacer layer positioned between first and second ferromagnetic free layers. At least one antiferromagnetic (AFM) tab is connected to the first free layer on a surface thereof opposite the spacer layer, the AFM tab having a second areal extent that is less than the first areal extent.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: October 8, 2013
    Assignee: Seagate Technology LLC
    Inventors: Dion Song, Mark William Covington, Qing He, Dimitar Velikov Dimitrov, Wei Tian, Wonjoon Jung, Sunita Bhardwaj Gangopadhyay
  • Patent number: 8467154
    Abstract: Disclosed herein are magnetic sensors that include: a sensor stack having a front and an opposing back, wherein the front of the sensor stack defines an air bearing surface of the magnetic sensor, and the sensor stack includes: a free layer assembly having a second magnetization direction, that is substantially perpendicular to a plane of each layer of the sensor stack; and a stabilizing structure positioned away from the air bearing surface at the back of the sensor stack.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: June 18, 2013
    Assignee: Seagate Technology LLC
    Inventors: Mark William Covington, Dimitar Velikov Dimitrov, Wonjoon Jung, Dion Song
  • Publication number: 20130050876
    Abstract: Disclosed herein are magnetic sensors that include: a sensor stack having a front and an opposing back, wherein the front of the sensor stack defines an air bearing surface of the magnetic sensor, and the sensor stack includes: a free layer assembly having a second magnetization direction, that is substantially perpendicular to a plane of each layer of the sensor stack; and a stabilizing structure positioned away from the air bearing surface at the back of the sensor stack.
    Type: Application
    Filed: August 31, 2011
    Publication date: February 28, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Mark William Covington, Dimitar Velikov Dimitrov, Wonjoon Jung, Dion Song
  • Patent number: 8339741
    Abstract: A magnetic writer has at least a write pole with a first partial side shield and a second partial side shield. The write pole has a leading edge and a trailing edge along an air bearing surface (ABS) and a first side and a second side along an axis orthogonal to the ABS. The first partial side shield is separated from the first side of the write pole and extends from adjacent the write pole from the trailing edge to a location intermediate that trailing edge and the leading edge.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: December 25, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yifan Zhang, Mark T. Kief, Dion Song, Lijuan Zou, Charles E. Hawkinson
  • Patent number: 8289660
    Abstract: An apparatus includes a magnetoresistive read element, first and second primary shields, and an auxiliary shield. The magnetoresistive read element is located between the first and the second primary shields, and the auxiliary shield is located between the magnetoresistive read element and the first primary shield. In another embodiment, the apparatus includes a plurality of magnets located between a plurality of shields for a magnetoresistive element. The plurality of magnets is optionally offset from the magnetoresistive element.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Dimitar Velikov Dimitrov, Dion Song
  • Publication number: 20120134057
    Abstract: A magnetic element capable of detecting changes in magnetic states, such as for use as a read sensor in a data transducing head or as a solid-state non-volatile memory element. In accordance with various embodiments, the magnetic element includes a magnetically responsive stack or lamination with a first areal extent. The stack includes a spacer layer positioned between first and second ferromagnetic free layers. At least one antiferromagnetic (AFM) tab is connected to the first free layer on a surface thereof opposite the spacer layer, the AFM tab having a second areal extent that is less than the first areal extent.
    Type: Application
    Filed: November 30, 2010
    Publication date: May 31, 2012
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Dion Song, Mark William Covington, Qing He, Dimitar Velikov Dimitrov, Wei Tian, Wonjoon Jung, Sunita Bhardwaj Gangopadhyay
  • Publication number: 20110310513
    Abstract: An apparatus includes a magnetoresistive read element, first and second primary shields, and an auxiliary shield. The magnetoresistive read element is located between the first and the second primary shields, and the auxiliary shield is located between the magnetoresistive read element and the first primary shield. In another embodiment, the apparatus includes a plurality of magnets located between a plurality of shields for a magnetoresistive element. The plurality of magnets is optionally offset from the magnetoresistive element.
    Type: Application
    Filed: June 16, 2010
    Publication date: December 22, 2011
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Dimitar Dimitrov, Dion Song
  • Publication number: 20110228428
    Abstract: A magnetoresistive read sensor with improved sensitivity and stability is described. The sensor is a trilayer stack positioned between two electrodes. The trilayer stack has two free layers separated by a nonmagnetic layer and a biasing magnet positioned at the rear of the stack and separated from the air bearing surface by the stripe height distance. Current in the sensor is confined to regions close to the air bearing surface by an insulator layer to enhance reader sensitivity.
    Type: Application
    Filed: March 19, 2010
    Publication date: September 22, 2011
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Dimitar Velikov Dimitrov, Dion Song, Mark William Covington, James Wessel
  • Publication number: 20100321835
    Abstract: A magnetic writer includes a write pole, a first partial shield and a second partial shield. The write pole has a leading edge, a trailing edge, a first side and a second side. The first partial side shield is located on the first side of the write pole, and the second partial side shield is located on the second side of the write pole. The first partial side shield and the second partial side shield extend along side of the write pole from the trailing edge to a location intermediate that trailing edge and the leading edge so that the first partial side shield and the second partial side shield do not shield the leading edge.
    Type: Application
    Filed: June 22, 2009
    Publication date: December 23, 2010
    Applicant: Seagate Technology LLC
    Inventors: Yifan Zhang, Mark T. Kief, Dion Song, Lijuan Zou, Charles E. Hawkinson
  • Patent number: 7609488
    Abstract: A transducing device responsive to magnetic fields includes a writer, a reader, an actuator, and a void. The actuator is positioned proximate the writer and reader. The void is positioned between at least one of the reader and writer and a substrate of a sensing device. The void is also positioned proximate an external surface.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: October 27, 2009
    Assignee: Seagate Technology LLC
    Inventors: Wayne A. Bonin, Michael T. Johnson, Dion Song