Patents by Inventor Dian Song
Dian 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: 8780508Abstract: A magnetic element is generally provided that can be implemented as a transducing head. Various embodiments may configure a magnetic stack having a magnetically free layer with a predetermined magnetization. A side shield lamination can be separated from the magnetic stack on an air hearing surface (ABS) and biased to a bias magnetization that opposes the predetermined magnetization.Type: GrantFiled: June 29, 2012Date of Patent: July 15, 2014Assignee: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Mark William Covington
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Patent number: 8749924Abstract: Various embodiments can have a data read stack positioned on an air bearing surface (ABS). The data read stack may be disposed between first and second buffer layers, where at least one of the buffer layers can be configured to provide a predetermined shunt ratio for the data read stack.Type: GrantFiled: September 13, 2011Date of Patent: June 10, 2014Assignee: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Mark William Covington
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Publication number: 20140146419Abstract: A magnetic element may be configured with at least a magnetic stack having first and second magnetically free layers that each has a predetermined stripe height from an air bearing surface (ABS). The first and second magnetically free layers can respectively be configured with first and second uniaxial anisotropies that are crossed in relation to the ABS and angled in response to the predetermined stripe height.Type: ApplicationFiled: November 28, 2012Publication date: May 29, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Mark William Covington, Victor Boris Sapozhnikov, Wonjoon Jung, Dimitar Velikov Demitrov, Dian Song, Taras Pohkil
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Patent number: 8711526Abstract: A magnetic element is generally provided that can be implemented as a transducing head. Various embodiments may configure a magnetic stack to be separated from a side shield lamination on an air bearing surface (ABS). The side shield lamination can be constructed to have a plurality of magnetic and non-magnetic layers each coupled to a top shield.Type: GrantFiled: June 29, 2012Date of Patent: April 29, 2014Assignee: Seagate Technology LLCInventors: Levent Colak, Mark William Covington, Dimitar Velikov Dimitrov, Mark Thomas Kief, Anthony Mack, Dian Song
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Patent number: 8705212Abstract: An apparatus and associated method may be used to produce a magnetic element capable of detecting changes in magnetic states. Various embodiments of the present invention are generally directed to a magnetically responsive lamination of layers with a first portion and a laterally adjacent second portion. The second portion having a predetermined roughness between at least two layers capable of producing orange-peel coupling.Type: GrantFiled: April 25, 2011Date of Patent: April 22, 2014Assignee: Seagate Technology LLCInventors: Jason Bryce Gadbois, Michael Christopher Kautzky, Mark William Covington, Dian Song, Dimitar Velikov Dimitrov, Qing He, Wei Tian, Thomas Boonstra, Sunita Gangopadhyay
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Publication number: 20140004385Abstract: A magnetic element is generally provided that can be implemented as a transducing head. Various embodiments may configure a magnetic stack to be separated from a side shield lamination on an air bearing surface (ABS). The side shield lamination can be constructed to have a plurality of magnetic and non-magnetic layers each coupled to a top shield.Type: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Levent Colak, Mark William Covington, Dimitar Velikov Dimitrov, Mark Thomas Kief, Anthony Mack, Dian Song
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Publication number: 20140004386Abstract: An apparatus can be generally directed to a magnetic stack having a magnetically free layer positioned on an air bearing surface (ABS). The magnetically free layer can be biased to a predetermined magnetization in various embodiments by a biasing structure that is coupled with the magnetically free layer and positioned distal the ABS.Type: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Mark William Covington, Dimitar Velikov Dimitrov, Dian Song
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Publication number: 20140002930Abstract: A magnetic element is generally provided that can be implemented as a transducing head. Various embodiments may configure a magnetic stack having a magnetically free layer with a predetermined magnetization. A side shield lamination can be separated from the magnetic stack on an air hearing surface (ABS) and biased to a bias magnetization that opposes the predetermined magnetization.Type: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Mark William Covington
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Patent number: 8582247Abstract: An apparatus and associated method is presently disclosed for a data sensing element capable of detecting changes in magnetic states. Various embodiments of the present invention are generally directed to a magnetically responsive lamination that has a spacer layer disposed between a first and second ferromagnetic free layer. The lamination having at least one free layer with a shape feature that increases a scissoring angle between the free layers.Type: GrantFiled: March 8, 2011Date of Patent: November 12, 2013Assignee: Seagate Technology LLCInventors: Dian Song, Dimitar V. Dimitrov, Mark W. Covington, Jiexuan He, Scott Stokes, Jason Gadbois
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Publication number: 20130065084Abstract: Various embodiments can have a data read stack positioned on an air bearing surface (ABS). The data read stack may be disposed between first and second buffer layers, where at least one of the buffer layers can be configured to provide a predetermined shunt ratio for the data read stack.Type: ApplicationFiled: September 13, 2011Publication date: March 14, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Mark William Covington
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Patent number: 8390963Abstract: A magnetoresistive read sensor is described. The sensor is a magnetically responsive stack positioned between top and bottom electrodes on an air bearing surface. Current in the sensor is confined to regions close to the air bearing surface by a first multilayer insulator structure between the stack and at least one electrode to enhance reader sensitivity.Type: GrantFiled: April 25, 2011Date of Patent: March 5, 2013Assignee: Seagate Technology LLCInventors: Dimitar V. Dimitrov, Dian Song, Thu Van Nguyen, Carolyn Pitcher Van Dorn
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Publication number: 20130027031Abstract: An apparatus and associated method are generally directed to a magnetic sensor. A sensor may have a stack with an air bearing surface (ABS) and a biasing surface opposite the ABS. A biasing yoke can be disposed between a biasing magnet and the stack with the biasing magnet having a lower magnet moment than the biasing yoke.Type: ApplicationFiled: July 29, 2011Publication date: January 31, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Dimitar V. Dimitrov, Dian Song, Jason B. Gadbois
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Publication number: 20130000107Abstract: A transducer having an external contact surface includes a writer and a contact member. The writer has a portion extendable relative to an adjacent portion of the external contact surface. The contact member surrounds at least a portion of the extendable writer portion and is spaced from the extendable writer portion. The coefficient of thermal expansion of the contact member is approximately equal to the coefficient of thermal expansion of the extendable writer portion.Type: ApplicationFiled: June 29, 2012Publication date: January 3, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Ladislav R. Pust, Lars H. Ahlen, Edwin F. Rejda, David C. Seets, Lance E. Stover, Dian Song, Feng Y. Wang
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Patent number: 8310782Abstract: A transducing head for use with a storage medium rotatable about an axis includes first and second writers for writing to the storage medium. The first writer is configured for dedicated writing to a first radial region of the storage medium, and the second writer is configured for dedicated writing to a second radial region of the storage medium. The second radial region is located radially outward from the first radial region.Type: GrantFiled: April 4, 2008Date of Patent: November 13, 2012Assignee: Seagate Technology LLCInventors: Dian Song, Huaqing Yin, Ralph William Cross
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Patent number: 8310779Abstract: A head or slider having a sensor element to detect changes in head-media spacing is disclosed. In illustrated embodiments the sensor element includes a piezoelectric sensor layer or similar layer that provides acoustic emission or vibration responsive to changes in head-media spacing. In illustrated embodiments, the sensor element is located proximate to the close point of the head and slider. In embodiments described in the specification, output from the sensor element is utilized to energize a heating element or microactuator to control pole tip protrusion or actuation of transducer elements responsive to changes in head-media spacing.Type: GrantFiled: June 25, 2009Date of Patent: November 13, 2012Assignee: Seagate Technology LLCInventors: Jorge Vicente Hanchi, Dian Song, John Stuart Wright, Andrew D. White
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Publication number: 20120281319Abstract: A magnetic shield that is capable of enhancing magnetic reading. In accordance with various embodiments, a magnetic element has a magnetically responsive stack shielded from magnetic flux and biased to a predetermined default magnetization by at least one lateral side shield that has a transition metal layer disposed between first and second ferromagnetic layers.Type: ApplicationFiled: May 6, 2011Publication date: November 8, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Eric W. Singleton, Jae-Young Yi, Kaizhong Gao, Dimitar V. Dimitrov, Dian Song, Vladyslav A. Vas'ko
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Publication number: 20120268847Abstract: A magnetoresistive read sensor is described. The sensor is a magnetically responsive stack positioned between top and bottom electrodes on an air bearing surface. Current in the sensor is confined to regions close to the air bearing surface by a first multilayer insulator structure between the stack and at least one electrode to enhance reader sensitivity.Type: ApplicationFiled: April 25, 2011Publication date: October 25, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Dimitar V. Dimitrov, Dian Song, Thu Van Nguyen, Carolyn Pitcher Van Dorn
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Publication number: 20120268846Abstract: An apparatus and associated method may be used to produce a magnetic element capable of detecting changes in magnetic states. Various embodiments of the present invention are generally directed to a magnetically responsive lamination of layers with a first portion and a laterally adjacent second portion. The second portion having a predetermined roughness between at least two layers capable of producing orange-peel coupling.Type: ApplicationFiled: April 25, 2011Publication date: October 25, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Jason Bryce Gadbois, Michael Christopher Kautzky, Mark William Covington, Dian Song, Dimitar Velikov Dimitrov, Qing He, Wei Tian, Thomas Boonstra, Sunita Gangopadhyay
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Publication number: 20120229935Abstract: An apparatus and associated method is presently disclosed for a data sensing element capable of detecting changes in magnetic states. Various embodiments of the present invention are generally directed to a magnetically responsive lamination that has a spacer layer disposed between a first and second ferromagnetic free layer. The lamination having at least one free layer with a shape feature that increases a scissoring angle between the free layers.Type: ApplicationFiled: March 8, 2011Publication date: September 13, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Dian Song, Dimitar V. Dimitrov, Mark W. Covington, Jiexuan He, Scott Stokes, Jason Gadbois
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Publication number: 20120201346Abstract: The present disclosure provides a convertor for X-ray radiography and its manufacturing method and an X-ray detector, wherein the surface of the scintillator facing the X-ray is covered with photonic crystals of a two-dimensional or three-dimensional spatial structure capable of reflecting the visible light facing the photonic crystals generated by the scintillator to increase the intensity of the output light of the scintillator by more than 100%, thus enhancing the image brightness and improving the image resolution, in addition to reducing to a certain extent the interference between pixels due to the ability of the photonic crystals to control the direction of the light being reflected, for example, by controlling the reflecting direction so as to be vertical to the surface of the scintillator, and the manufacturing method and material for the photonic crystals are low in cost without toxicity, enabling it to be used more widely.Type: ApplicationFiled: September 16, 2010Publication date: August 9, 2012Inventors: Dian Song Cao, Lei Cao, Guang Wei Du, Li Rong Ren, Xiao Dong Xu