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).
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Patent number: 9324351Abstract: 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: GrantFiled: November 7, 2013Date of Patent: April 26, 2016Assignee: Seagate Technology LLCInventors: Xiaohang Kong, Neil Zuckerman, Erik Hutchinson, Raul Andruet, Dion Song, Christopher Rea
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Publication number: 20150124354Abstract: 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: ApplicationFiled: November 7, 2013Publication date: May 7, 2015Applicant: Seagate Technology LLCInventors: Xiaohang Kong, Neil Zuckerman, Erik Hutchinson, Raul Andruet, Dion Song, Christopher Rea
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Patent number: 9019664Abstract: 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: GrantFiled: May 20, 2013Date of Patent: April 28, 2015Assignee: Seagate Technology LLCInventors: Dion Song, Dimitar Velikov Dimitrov, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20140340793Abstract: 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: ApplicationFiled: May 20, 2013Publication date: November 20, 2014Applicant: Seagate Technology LLCInventors: Dion Song, Dimitar Velikov Dimitrov, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Patent number: 8659855Abstract: 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: GrantFiled: March 19, 2010Date of Patent: February 25, 2014Assignee: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dion Song, Mark William Covington, James Wessel
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Patent number: 8553369Abstract: 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: GrantFiled: November 30, 2010Date of Patent: October 8, 2013Assignee: Seagate Technology LLCInventors: Dion Song, Mark William Covington, Qing He, Dimitar Velikov Dimitrov, Wei Tian, Wonjoon Jung, Sunita Bhardwaj Gangopadhyay
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Patent number: 8467154Abstract: 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: GrantFiled: August 31, 2011Date of Patent: June 18, 2013Assignee: Seagate Technology LLCInventors: Mark William Covington, Dimitar Velikov Dimitrov, Wonjoon Jung, Dion Song
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Publication number: 20130050876Abstract: 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: ApplicationFiled: August 31, 2011Publication date: February 28, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Mark William Covington, Dimitar Velikov Dimitrov, Wonjoon Jung, Dion Song
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Patent number: 8339741Abstract: 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: GrantFiled: June 22, 2009Date of Patent: December 25, 2012Assignee: Seagate Technology LLCInventors: Yifan Zhang, Mark T. Kief, Dion Song, Lijuan Zou, Charles E. Hawkinson
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Patent number: 8289660Abstract: 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: GrantFiled: June 16, 2010Date of Patent: October 16, 2012Assignee: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dion Song
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Publication number: 20120134057Abstract: 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: ApplicationFiled: November 30, 2010Publication date: May 31, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Dion Song, Mark William Covington, Qing He, Dimitar Velikov Dimitrov, Wei Tian, Wonjoon Jung, Sunita Bhardwaj Gangopadhyay
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Publication number: 20110310513Abstract: 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: ApplicationFiled: June 16, 2010Publication date: December 22, 2011Applicant: SEAGATE TECHNOLOGY LLCInventors: Dimitar Dimitrov, Dion Song
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Publication number: 20110228428Abstract: 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: ApplicationFiled: March 19, 2010Publication date: September 22, 2011Applicant: SEAGATE TECHNOLOGY LLCInventors: Dimitar Velikov Dimitrov, Dion Song, Mark William Covington, James Wessel
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Publication number: 20100321835Abstract: 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: ApplicationFiled: June 22, 2009Publication date: December 23, 2010Applicant: Seagate Technology LLCInventors: Yifan Zhang, Mark T. Kief, Dion Song, Lijuan Zou, Charles E. Hawkinson
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Patent number: 7609488Abstract: 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: GrantFiled: October 24, 2006Date of Patent: October 27, 2009Assignee: Seagate Technology LLCInventors: Wayne A. Bonin, Michael T. Johnson, Dion Song