Patents by Inventor Mark Thomas Kief

Mark Thomas Kief 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).

  • Publication number: 20150070800
    Abstract: A data reader may be configured at least with detector and injector stacks that each has a common spin accumulation layer. The detector stack may positioned on an air bearing surface (ABS) while the injector stack is positioned distal the ABS. The injector stack can have a diffusive layer with a larger spin diffusion length than mean free path.
    Type: Application
    Filed: September 10, 2013
    Publication date: March 12, 2015
    Applicant: Seagate Technology LLC
    Inventors: Dimitar Velikov Dimitrov, Dian Song, Mark Thomas Kief, Amit Sharma
  • Publication number: 20150070799
    Abstract: A data reader may be configured at least with a magnetic stack positioned on an air bearing surface (ABS) and contacting a spin depolarizing layer that is a minority spin current carrier. The spin depolarizing layer can have a thickness and spin diffusion length corresponding to a net zero spin polarization at an interface of the magnetic stack and spin depolarizing layer.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 12, 2015
    Applicant: Seagate Technology LLC
    Inventors: Dimitar Velikov Dimitrov, Dian Song, Mark Thomas Kief, Amit Sharma
  • Publication number: 20150062757
    Abstract: A data reader may be configured at least with a magnetic stack that has a first magnetic layer separated from a second magnetic layer by a non-magnetic spacer layer. The first magnetic layer may have an areal extent on an air bearing surface (ABS) that differs from the second magnetic layer while the second magnetic layer can be configured with a first plurality of linear sidewalls that are each angled with respect to a second plurality of linear sidewalls of the first magnetic layer.
    Type: Application
    Filed: September 5, 2013
    Publication date: March 5, 2015
    Applicant: Seagate Technology LLC
    Inventors: Dimitar Velikov Dimitrov, Dian Song, Mark Thomas Kief, Sung-Hoon Gee
  • Patent number: 8970991
    Abstract: A data storage device may be generally directed to a data transducing head capable of magnetoresistive data reading. Such a data transducing head may be configured with at least a trilayer reader that contacts and is biased by a coupling feature. The coupling feature may have a smaller extent from an air bearing surface (ABS) than the trilayer reader.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: March 3, 2015
    Assignee: Seagate Technology LLC
    Inventors: Dimitar Velikov Dimitrov, Dian Song, Wonjoon Jung, Mark William Covington, Mark Thomas Kief
  • Publication number: 20150041429
    Abstract: A tool for use in fabricating an electronic component includes a plurality of processing modules and a transfer chamber in communication with each of the plurality of processing modules. The transfer chamber includes a component for transferring a structure to each of the plurality of processing modules. The plurality of processing modules and the transfer chamber are sealed from the surrounding environment and are under a vacuum. The plurality of processing modules includes a first module configured to perform a first process on the structure and a second module configured to perform a second process on the structure. The first process includes performing at least one shaping operation on the structure.
    Type: Application
    Filed: October 24, 2014
    Publication date: February 12, 2015
    Inventors: Xilin Peng, Jiaoming Qiu, Yonghua Chen, Michael Christopher Kautzky, Mark Thomas Kief
  • Patent number: 8861316
    Abstract: A write pole structure disclosed herein includes a write pole, a trailing shield, and a high magnetic moment (HMM) material layer on a surface of the trailing shield facing the write pole.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: October 14, 2014
    Assignee: Seagate Technology LLC
    Inventors: Huaqing Yin, Jianhua Xue, Venkateswara Rao Inturi, Mark Thomas Kief, Michael C. Kautzky
  • Patent number: 8848316
    Abstract: A perpendicular write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing side, a leading side that is opposite the trailing side, and first and second sides; side gaps, wherein the side gaps are proximate the write pole along the first and second side edges; and side shields proximate the side gaps, wherein the side shields have gap facing surfaces and include at least one set of alternating layers of magnetic and non-magnetic materials, wherein only one kind of material makes up the gap facing surfaces at the air bearing surfaces.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: September 30, 2014
    Assignee: Seagate Technology LLC
    Inventors: Mark Thomas Kief, Alexandru Cazacu, Kaizhong Gao, Mark Anthony Gubbins, Ibro Tabakovic, Christina Laura Hutchinson, David Christopher Seets, James Gary Wessel
  • Publication number: 20140268428
    Abstract: A data storage device may be generally directed to a data transducing head capable of magnetoresistive data reading. Such a data transducing head may be configured with at least a trilayer reader that contacts and is biased by a coupling feature. The coupling feature may have a smaller extent from an air bearing surface (ABS) than the trilayer reader.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Dimitar Velikov Dimitrov, Dian Song, Wonjoon Jung, Mark William Covington, Mark Thomas Kief
  • Publication number: 20140169146
    Abstract: A write pole structure disclosed herein includes a write pole, a trailing shield, and a high magnetic moment (HMM) material layer on a surface of the trailing shield facing the write pole.
    Type: Application
    Filed: December 18, 2012
    Publication date: June 19, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Huaqing Yin, Jianhua Xue, Venkateswara Rao Inturi, Mark Thomas Kief, Michael C. Kautzky
  • Patent number: 8711526
    Abstract: 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: Grant
    Filed: June 29, 2012
    Date of Patent: April 29, 2014
    Assignee: Seagate Technology LLC
    Inventors: Levent Colak, Mark William Covington, Dimitar Velikov Dimitrov, Mark Thomas Kief, Anthony Mack, Dian Song
  • Publication number: 20140004385
    Abstract: 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: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Levent Colak, Mark William Covington, Dimitar Velikov Dimitrov, Mark Thomas Kief, Anthony Mack, Dian Song
  • Publication number: 20140004387
    Abstract: An apparatus and associated method provides a magnetic writing element that may have at least a write pole tuned to a predetermined first grain size with a cryogenic substrate temperature. A magnetic shield can be formed with a predetermined second grain size that is tuned with the cryogenic substrate temperature.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Venkateswara Rao Inturi, Wei Tian, Huaqing Yin, Michael C. Kautzky, Mark Thomas Kief, Meng Zhu, Eliot Lewis Cuthbert Estrine
  • Patent number: 8564910
    Abstract: An apparatus and associated method for a magnetic shield structure for data transduction from a recordable media in a data storage device. Various embodiments of the present invention are generally directed to a data transducer and a magnetic shield structure comprising a write shield magnetic material constructed of exchange decoupled material.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: October 22, 2013
    Assignee: Seagate Technology LLC
    Inventors: Mourad Benakli, Kirill Rivkin, Kaizhong Gao, James Wessel, Ming Sun, Ibro Tabakovic, Mark Thomas Kief
  • Publication number: 20130244192
    Abstract: A magnetic sensor comprising a first shield and a second shield and a sensor stack between the first and the second shield, the sensor stack having a plurality of layers wherein at least one layer is annealed using in-situ rapid thermal annealing. In one implementation of the magnetic sensor a seed layer is annealed using in-situ rapid thermal annealing. Alternatively, one of a barrier layer, an AFM layer, and a cap layer is annealed using in-situ rapid thermal annealing.
    Type: Application
    Filed: March 14, 2012
    Publication date: September 19, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Qing He, Wonjoon Jung, Mark William Covington, Mark Thomas Kief, Yonghua Chen
  • Patent number: 8435399
    Abstract: A method is disclosed for defining discrete magnetic and non-magnetic regions on the magnetic film layer of a storage media substrate. The method applies anodic oxidation of a cobalt-containing magnetic film layer to remove cobalt, followed by controlled deposition of a non-magnetic matrix into the regions where the cobalt has been removed. Deposition may either be electrodeposition, collimated vacuum deposition, or other methods depending upon the composition of the non-magnetic matrix being deposited. The method may be performed in a single electrochemical cell.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: May 7, 2013
    Assignee: Seagate Technology LLC
    Inventors: Ibro Takakovic, Steve Riemer, Jie Gong, Mark Thomas Kief, Ming Sun
  • Publication number: 20130071692
    Abstract: Various embodiments may be generally directed to a magnetic sensor constructed with a decoupling layer that has a predetermined first morphology. A magnetic free layer can be deposited contactingly adjacent to the decoupling layer with the magnetic free layer configured to have at least a first sub-layer having a predetermined second morphology.
    Type: Application
    Filed: September 21, 2011
    Publication date: March 21, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Mark William Covington, Mark Thomas Kief, Wonjoon Jung
  • Patent number: 8289648
    Abstract: The present disclosure provides a magnetic recording head for a data storage system having improved write field characteristics. In one example, an apparatus having magnetic properties is provided. The apparatus includes a pole, a shield, and a multilayer block positioned between the pole and the shield. The multilayer block includes a plurality of layers wherein at least one of the plurality of layers comprises a magnetic material. In one embodiment, the multilayer block provides an antiferromagnetic coupling between the pole and the shield such that a magnetization of the pole is in a first direction and a magnetization of the shield in a second direction that is substantially anti-parallel to the first direction.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Mark Thomas Kief, Sharat Batra, Inturi Venkateswara Rao
  • Publication number: 20120075748
    Abstract: A perpendicular write head, the write head having an air bearing surface, the write head including a magnetic write pole, wherein at the air bearing surface, the write pole has a trailing side, a leading side that is opposite the trailing side, and first and second sides; side gaps, wherein the side gaps are proximate the write pole along the first and second side edges; and side shields proximate the side gaps, wherein the side shields have gap facing surfaces and include at least one set of alternating layers of magnetic and non-magnetic materials, wherein only one kind of material makes up the gap facing surfaces at the air bearing surfaces.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 29, 2012
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Mark Thomas Kief, Alexandru Cazacu, Kaizhong Gao, Mark Anthony Gubbins, Ibro Tabakovic, Christina Laura Hutchinson, David Christopher Seets, James Gary Wessel
  • Publication number: 20110171425
    Abstract: A method is disclosed for defining discrete magnetic and non-magnetic regions on the magnetic film layer of a storage media substrate. The method applies anodic oxidation of a cobalt-containing magnetic film layer to remove cobalt, followed by controlled deposition of a non-magnetic matrix into the regions where the cobalt has been removed. Deposition may either be electrodeposition, collimated vacuum deposition, or other methods depending upon the composition of the non-magnetic matrix being deposited. The method may be performed in a single electrochemical cell.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 14, 2011
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Ibro Tabakovic, Mark Thomas Kief, Steve Riemer, Jie Gong, Ming Sun
  • Publication number: 20110109999
    Abstract: An apparatus and associated method for a magnetic shield structure for data transduction from a recordable media in a data storage device. Various embodiments of the present invention are generally directed to a data transducer and a magnetic shield structure comprising a write shield magnetic material constructed of exchange decoupled material.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 12, 2011
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Mourad Benakli, Kirill Rivkin, Kaizhong Gao, James Wessel, Ming Sun, Ibro Tabakovic, Mark Thomas Kief