Patents by Inventor Ned Tabat
Ned Tabat 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: 9922669Abstract: Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.Type: GrantFiled: December 28, 2015Date of Patent: March 20, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Kirill Rivkin, Ned Tabat, Mourad Benakli, Michael A. Seigler
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Patent number: 9449618Abstract: A microwave assisted magnetic recording system includes a write pole that generates a write magnetic field, an element that generates a radio frequency assist magnetic field, and a recording medium that moves relative to the write pole. The recording medium is exposed to the radio frequency assist magnetic field before it is exposed to the write magnetic field. One possible element that generates the radio frequency assist magnetic field is an assist wire placed perpendicular to the write pole. Alternatively, the assist wire can be placed parallel to the write pole so that its radio frequency assist magnetic field couples with the write pole, which in turn generates its own coupled radio frequency magnetic field along with the write magnetic field.Type: GrantFiled: April 21, 2009Date of Patent: September 20, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Kirill Aleksandrovich Rivkin, Ned Tabat
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Publication number: 20160118064Abstract: Implementations disclosed and claimed herein include a method of write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.Type: ApplicationFiled: December 28, 2015Publication date: April 28, 2016Inventors: Kirill Rivkin, Ned Tabat, Mourad Benakli, Michael A. Seigler
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Patent number: 9251814Abstract: Implementations disclosed and claimed herein provide a write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.Type: GrantFiled: December 30, 2013Date of Patent: February 2, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Kirill Rivkin, Ned Tabat, Mourad Benakli, Michael A. Seigler
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Patent number: 8937852Abstract: In an example, a method comprises aligning a central axis of a paddle portion on a write pole circuit to be substantially perpendicular to an adjacent magnetic surface, and bending a central axis of an extended tip portion relative to the central axis of the paddle portion. In another example, a transducer head comprises a write pole circuit having a paddle portion with a central axis, and an extended tip portion with a central axis, the central axis of the extended tip portion angled from the central axis of the paddle portion. In another example, a magnetic circuit comprises a write pole circuit having a paddle portion and an extended tip portion, the extended tip portion bending away from a central axis of the paddle portion, and a coil wrapping around the extended tip portion.Type: GrantFiled: December 20, 2013Date of Patent: January 20, 2015Assignee: Seagate Technology LLCInventors: Kirill Aleksandrovich Rivkin, Mourad Benakli, Ned Tabat
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Publication number: 20140264346Abstract: In accordance with one implementation, a photodiode may be integrated by thin film processing within a slider. In accordance with another implementation, an apparatus can be configured to include a slider, a first layer of a metal disposed within the slider, a layer of amorphous silicon disposed adjacent the first layer of metal, a second layer of metal disposed adjacent the layer of amorphous silicon, and wherein the first layer of metal, the layer of amorphous silicon, and the second layer of metal are operable as a photodiode.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Seagate Technology LLCInventors: Ned Tabat, Xiaoyue Huang
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Publication number: 20140269234Abstract: Implementations disclosed and claimed herein provide a write head core located in a slider, the write head core comprising a first end operative to serve as a write pole, a second end operative to serve as a return pole, wherein the first end comprises a substantially smaller cross-sectional area than the second end, and wherein the write head core has a substantially smooth curvature.Type: ApplicationFiled: December 30, 2013Publication date: September 18, 2014Applicant: Seagate Technology LLCInventors: Kirill Rivkin, Ned Tabat, Mourad Benakli, Michael A. Seigler
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Publication number: 20140119163Abstract: In an example, a method comprises aligning a central axis of a paddle portion on a write pole circuit to be substantially perpendicular to an adjacent magnetic surface, and bending a central axis of an extended tip portion relative to the central axis of the paddle portion. In another example, a transducer head comprises a write pole circuit having a paddle portion with a central axis, and an extended tip portion with a central axis, the central axis of the extended tip portion angled from the central axis of the paddle portion. In another example, a magnetic circuit comprises a write pole circuit having a paddle portion and an extended tip portion, the extended tip portion bending away from a central axis of the paddle portion, and a coil wrapping around the extended tip portion.Type: ApplicationFiled: December 20, 2013Publication date: May 1, 2014Applicant: Seagate Technology LLCInventors: Kirill Aleksandrovich Rivkin, Mourad Benakli, Ned Tabat
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Patent number: 8619509Abstract: In an example, a method comprises aligning a central axis of a paddle portion on a write pole circuit to be substantially perpendicular to an adjacent magnetic surface, and bending a central axis of an extended tip portion relative to the central axis of the paddle portion. In another example, a transducer head comprises a write pole circuit having a paddle portion with a central axis, and an extended tip portion with a central axis, the central axis of the extended tip portion angled from the central axis of the paddle portion. In another example, a magnetic circuit comprises a write pole circuit having a paddle portion and an extended tip portion, the extended tip portion bending away from a central axis of the paddle portion, and a coil wrapping around the extended tip portion.Type: GrantFiled: August 8, 2012Date of Patent: December 31, 2013Assignee: Seagate Technology LLCInventors: Kirill Aleksandrovich Rivkin, Mourad Benakli, Ned Tabat
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Patent number: 7684150Abstract: The present invention relates to a head having an air bearing surface for confronting the surface of a storage medium. The head includes a first pole that is spaced apart from a second pole. At least one non-magnetic spacer is positioned between the first pole and the second pole such that the first pole is magnetically decoupled from the second pole. In a further aspect, one or both of the first pole and the second pole can be elliptical in shape.Type: GrantFiled: June 30, 2004Date of Patent: March 23, 2010Assignee: Seagate Technology LLCInventors: Taras Grigoryevich Pokhil, Nurul Amin, Steven Paul Bozeman, Steven Albert Kalderon, Andrzej Adam Stankiewicz, Ned Tabat, Pu-Ling Lu, Johannes Van Ek, Janusz Jozef Nowak, Patrick Joseph Ryan
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Publication number: 20090262457Abstract: A microwave assisted magnetic recording system includes a write pole that generates a write magnetic field, an element that generates a radio frequency assist magnetic field, and a recording medium that moves relative to the write pole. The recording medium is exposed to the radio frequency assist magnetic field before it is exposed to the write magnetic field. One possible element that generates the radio frequency assist magnetic field is an assist wire placed perpendicular to the write pole. Alternatively, the assist wire can be placed parallel to the write pole so that its radio frequency assist magnetic field couples with the write pole, which in turn generates its own coupled radio frequency magnetic field along with the write magnetic field.Type: ApplicationFiled: April 21, 2009Publication date: October 22, 2009Applicant: Seagate Technology LLCInventors: Kirill Aleksandrovich Rivkin, Ned Tabat
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Publication number: 20090251827Abstract: The present invention relates to a head having an air bearing surface for confronting the surface of a storage medium. The head includes a first pole that is spaced apart from a second pole. At least one non-magnetic spacer is positioned between the first pole and the second pole such that the first pole is magnetically decoupled from the second pole. In a further aspect, one or both of the first pole and the second pole can be elliptical in shape.Type: ApplicationFiled: June 30, 2004Publication date: October 8, 2009Applicant: Seagate Technology LLCInventors: Taras Pokhil, Nurul Amin, Steven Bozeman, Steven Kalderon, Andrzej Stankiewicz, Ned Tabat, Pu-Ling Lu, Johannes Van Ek, Janusz Nowak, Patrick Ryan
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Patent number: 7333294Abstract: A disc drive head that includes a shared pole having high magnetic anisotropy layer which locally decreases the amplitude of dynamic field excitation of the shared pole at the write operation frequency to reduce side-writing of a disc media during a write operation.Type: GrantFiled: December 18, 2002Date of Patent: February 19, 2008Assignee: Seagate Technology LLCInventors: Shaoping Li, Wenzhong Zhu, Lei Wang, Rick Michel, David Kaiser, Dean C. Palmer, Taras G. Pokhil, Ned Tabat
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Patent number: 7298587Abstract: A magnetic recording head having an air bearing surface for confronting a surface of a rotating disc and comprising a pole tip and a generally rounded and substantially planar body attached to the pole tip is disclosed. The width of the pole tip defines a track width of data written to the rotating disc. The generally rounded shape of the top pole body is such that top pole magnetization gradually changes its direction and follows the edges of the body. Further, the pole tip has low remanence, gradual spin structure and no domain walls formed near the pole tip.Type: GrantFiled: December 4, 2002Date of Patent: November 20, 2007Assignee: Seagate Technology LLCInventors: Taras G. Pokhil, Ned Tabat, Martin L. Plumer, Steven P. Bozeman, Nurul Amin
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Patent number: 7142398Abstract: A magnetoresistive head assembly of the present invention includes a magnetoresistive sensor and an electrostatic discharge and electrical overstress protection circuit. The magnetoresistive sensor is capable of having conducted therethrough oppositely-directed first direction current and second direction current. The magnetoresistive sensor is sensitive to first direction currents in excess of a first predetermined value and to second direction currents in excess of a second predetermined value different than the first predetermined value. The electrostatic discharge and electrical overstress protection circuit is electrically connected to the magnetoresistive sensor for preventing only those first direction currents greater than the first predetermined value from flowing though the magnetoresistive sensor and only those second direction currents greater than the second predetermined value from flowing through the magnetoresistive sensor.Type: GrantFiled: August 1, 2002Date of Patent: November 28, 2006Assignee: Seagate Technology LLCInventors: Eric L. Granstrom, Ned Tabat
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Patent number: 7064933Abstract: A slider includes a slider body having a trailing edge and a leading edge. The slider also includes a thin film structure deposited in layers on the trailing edge. The thin film structure includes a write transducer configured to read and write to a storage medium. The thin film structure also includes a non-thermally activated actuator at least partially formed with the write transducer and configured to move the write transducer relative to the trailing edge.Type: GrantFiled: October 22, 2003Date of Patent: June 20, 2006Assignee: Seagate Technology LLCInventors: Declan Macken, Jeremy Adam Thurn, Lance Eugene Stover, Ned Tabat, John Robert Pendray
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Patent number: 7031109Abstract: The invention includes a magnetic recording head that has at least one structure or substructure that is made of a semiconductor material that protects the head from damage or destruction arising from stray current flow or unwanted electrostatic discharge during manufacture, assembly or use. The semiconductor material acts as a dissipative pathway to drain unwanted charges from the structure. The invention also includes a magnetic recording head that includes a substrate and a reader portion in the substrate, the substrate comprising a semiconductor material.Type: GrantFiled: December 11, 2002Date of Patent: April 18, 2006Assignee: Seagate Technology LLCInventors: Eric Leroy Granstrom, Ned Tabat, Cyril Peter De Vries
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Publication number: 20060002020Abstract: The present invention relates to a head having an air bearing surface for confronting the surface of a storage medium. The head includes a first pole that is spaced apart from a second pole. At least one non-magnetic spacer is positioned between the first pole and the second pole such that the first pole is magnetically decoupled from the second pole. In a further aspect, one or both of the first pole and the second pole can be elliptical in shape.Type: ApplicationFiled: June 30, 2004Publication date: January 5, 2006Applicant: Seagate Technology LLCInventors: Taras Pokhil, Nurul Amin, Steven Bozeman, Steven Kalderon, Andrzej Stankiewicz, Ned Tabat, Pu-Ling Lu, Johannes Van Ek, Janusz Nowak, Patrick Ryan
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Patent number: 6954340Abstract: A magnetic head for perpendicular recording on double layer media with suppressed side writing and controlled write width is disclosed. The present invention reduces the problem of side writing and controls the write width of the writing element by providing a writing element with a trailing edge sized dimensionally larger than the leading edge, side shields, and specifically spaced writing gaps placed at various distances between the write element and the side shields, return poles, and the main pole.Type: GrantFiled: April 1, 2002Date of Patent: October 11, 2005Assignee: Seagate Technology LLCInventors: Alexander M. Shukh, Ned Tabat
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Publication number: 20050088784Abstract: A slider includes a slider body having a trailing edge and a leading edge. The slider also includes a thin film structure deposited in layers on the trailing edge. The thin film structure includes a write transducer configured to read and write to a storage medium. The thin film structure also includes a non-thermally activated actuator at least partially formed with the write transducer and configured to move the write transducer relative to the trailing edge.Type: ApplicationFiled: October 22, 2003Publication date: April 28, 2005Applicant: Seagate Technology LLCInventors: Declan Macken, Jeremy Thurn, Lance Stover, Ned Tabat, John Pendray