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).
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Publication number: 20150070800Abstract: 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: ApplicationFiled: September 10, 2013Publication date: March 12, 2015Applicant: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Mark Thomas Kief, Amit Sharma
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Publication number: 20150070799Abstract: 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: ApplicationFiled: September 6, 2013Publication date: March 12, 2015Applicant: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Mark Thomas Kief, Amit Sharma
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Publication number: 20150062757Abstract: 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: ApplicationFiled: September 5, 2013Publication date: March 5, 2015Applicant: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Mark Thomas Kief, Sung-Hoon Gee
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Patent number: 8970991Abstract: 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: GrantFiled: March 12, 2013Date of Patent: March 3, 2015Assignee: Seagate Technology LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Wonjoon Jung, Mark William Covington, Mark Thomas Kief
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Publication number: 20150041429Abstract: 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: ApplicationFiled: October 24, 2014Publication date: February 12, 2015Inventors: Xilin Peng, Jiaoming Qiu, Yonghua Chen, Michael Christopher Kautzky, Mark Thomas Kief
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Patent number: 8861316Abstract: 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: GrantFiled: December 18, 2012Date of Patent: October 14, 2014Assignee: Seagate Technology LLCInventors: Huaqing Yin, Jianhua Xue, Venkateswara Rao Inturi, Mark Thomas Kief, Michael C. Kautzky
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Patent number: 8848316Abstract: 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: GrantFiled: September 28, 2010Date of Patent: September 30, 2014Assignee: Seagate Technology LLCInventors: Mark Thomas Kief, Alexandru Cazacu, Kaizhong Gao, Mark Anthony Gubbins, Ibro Tabakovic, Christina Laura Hutchinson, David Christopher Seets, James Gary Wessel
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Publication number: 20140268428Abstract: 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: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Dimitar Velikov Dimitrov, Dian Song, Wonjoon Jung, Mark William Covington, Mark Thomas Kief
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Publication number: 20140169146Abstract: 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: ApplicationFiled: December 18, 2012Publication date: June 19, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Huaqing Yin, Jianhua Xue, Venkateswara Rao Inturi, Mark Thomas Kief, Michael C. Kautzky
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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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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: 20140004387Abstract: 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: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Venkateswara Rao Inturi, Wei Tian, Huaqing Yin, Michael C. Kautzky, Mark Thomas Kief, Meng Zhu, Eliot Lewis Cuthbert Estrine
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Patent number: 8564910Abstract: 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: GrantFiled: November 12, 2009Date of Patent: October 22, 2013Assignee: Seagate Technology LLCInventors: Mourad Benakli, Kirill Rivkin, Kaizhong Gao, James Wessel, Ming Sun, Ibro Tabakovic, Mark Thomas Kief
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Publication number: 20130244192Abstract: 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: ApplicationFiled: March 14, 2012Publication date: September 19, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Qing He, Wonjoon Jung, Mark William Covington, Mark Thomas Kief, Yonghua Chen
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Patent number: 8435399Abstract: 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: GrantFiled: January 11, 2010Date of Patent: May 7, 2013Assignee: Seagate Technology LLCInventors: Ibro Takakovic, Steve Riemer, Jie Gong, Mark Thomas Kief, Ming Sun
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Publication number: 20130071692Abstract: 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: ApplicationFiled: September 21, 2011Publication date: March 21, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Mark William Covington, Mark Thomas Kief, Wonjoon Jung
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Patent number: 8289648Abstract: 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: GrantFiled: February 20, 2009Date of Patent: October 16, 2012Assignee: Seagate Technology LLCInventors: Mark Thomas Kief, Sharat Batra, Inturi Venkateswara Rao
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Publication number: 20120075748Abstract: 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: ApplicationFiled: September 28, 2010Publication date: March 29, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Mark Thomas Kief, Alexandru Cazacu, Kaizhong Gao, Mark Anthony Gubbins, Ibro Tabakovic, Christina Laura Hutchinson, David Christopher Seets, James Gary Wessel
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Publication number: 20110171425Abstract: 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: ApplicationFiled: January 11, 2010Publication date: July 14, 2011Applicant: SEAGATE TECHNOLOGY LLCInventors: Ibro Tabakovic, Mark Thomas Kief, Steve Riemer, Jie Gong, Ming Sun
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Publication number: 20110109999Abstract: 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: ApplicationFiled: November 12, 2009Publication date: May 12, 2011Applicant: SEAGATE TECHNOLOGY LLCInventors: Mourad Benakli, Kirill Rivkin, Kaizhong Gao, James Wessel, Ming Sun, Ibro Tabakovic, Mark Thomas Kief