Patents by Inventor Mohammed Shariat Ullah Patwari

Mohammed Shariat Ullah Patwari 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).

  • Patent number: 9685178
    Abstract: A lateral spin valve reader includes a channel layer having a first end that is proximate to a bearing surface and a second end that is away from the bearing surface. The lateral spin valve reader also includes a detector structure disposed over an upper surface of a first portion of the channel layer that is proximate to the first end of the channel layer. A spin injection structure disposed below a lower surface of a second portion of the channel layer is proximate to the second end of the channel layer. An area of overlap between the spin injection structure and the second portion of the channel layer is substantially larger than an area of overlap between the detector structure and the first portion of the channel layer.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: June 20, 2017
    Assignee: Seagate Technology LLC
    Inventors: David A. Deen, Taras G. Pokhil, Eric Singleton, Mohammed Shariat Ullah Patwari
  • Patent number: 9659586
    Abstract: A read sensor that includes an unbalanced synthetic antiferromagnetic (SAF) free layer structure. The unbalanced SAF free layer structure includes a first magnetic layer having a first magnetic moment value and a second magnetic layer having a second magnetic moment value that is different from the first magnetic moment value. A separation layer is included between the first magnetic layer and the second magnetic layer. The first magnetic layer and the second magnetic layer are antiferromagnetically coupled.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: May 23, 2017
    Assignee: Seagate Technology LLC
    Inventors: Victor B. Sapozhnikov, Mohammed Shariat Ullah Patwari, Scott Wilson Stokes
  • Publication number: 20170140781
    Abstract: A read sensor that includes an unbalanced synthetic antiferromagnetic (SAF) free layer structure. The unbalanced SAF free layer structure includes a first magnetic layer having a first magnetic moment value and a second magnetic layer having a second magnetic moment value that is different from the first magnetic moment value. A separation layer is included between the first magnetic layer and the second magnetic layer. The first magnetic layer and the second magnetic layer are antiferromagnetically coupled.
    Type: Application
    Filed: November 12, 2015
    Publication date: May 18, 2017
    Inventors: Victor B. Sapozhnikov, Mohammed Shariat Ullah Patwari, Scott Wilson Stokes
  • Patent number: 9552834
    Abstract: A multi-sensor reader that includes a first sensor that has a first sensor stack, which includes a sensing layer that has a magnetization that changes according to an external magnetic field. The first sensor also includes a first seed element below the first sensor stack. The multi-sensor reader also includes a second sensor stacked over the first sensor. The second sensor includes a second sensor stack, which includes a sensing layer that has a magnetization that changes according to the external magnetic field. The second sensor also includes a second seed element below the second sensor stack. The second seed element is structurally different from the first seed element and includes a stabilization feature.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: January 24, 2017
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Steven P. Bozeman, Mohammed Shariat Ullah Patwari, LiWen Tan, Jae Young Yi, Eric W. Singleton
  • Patent number: 9536549
    Abstract: A multi-sensor reader that includes a first sensor that has a sensor stack, which includes a free layer (FL) that has a magnetization that changes according to an external magnetic field. The first sensor also includes a shielding structure that is positioned over the sensor stack. The multi-sensor reader also includes a second sensor stacked over the first sensor. The second sensor includes a sensor stack, which includes a FL that has a magnetization that changes according to the external magnetic field. The multi-sensor reader further includes an isolation layer between the first sensor and the second sensor. A FL-to-FL spacing reduction feature is included in at least one of the isolation layer or the shielding structure.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: January 3, 2017
    Assignee: Seagate Technology LLC
    Inventors: Zhiguo Ge, Victor Sapozhnikov, Shaun E. Mckinlay, Eric W. Singleton, Jae Young Yi, Mohammed Shariat Ullah Patwari
  • Patent number: 9142232
    Abstract: An apparatus for two dimensional reading may be constructed, in accordance with some embodiments, with a number of magnetic stacks respectively configured to engage adjacent data tracks of a data storage media. Each magnetic stack can be disposed between top and bottom shields while each shield is segmented into a number of contacts different than the number of magnetic stacks.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: September 22, 2015
    Assignee: Seagate Technology LLC
    Inventors: Harry Sam Edelman, Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari
  • Patent number: 9082424
    Abstract: Various embodiments may configure a data storage device with at least a magnetic element having a magnetic stack that is configured with an air bearing surface (ABS) and is separated from a side shield. The side shield can be biased by a biasing layer that contacts the side shield and is separated from the ABS.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: July 14, 2015
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay
  • Patent number: 9070382
    Abstract: Various embodiments may be generally directed to a magnetic element capable of reading magnetic data bits. Such a magnetic element may have at least a magnetic stack laterally adjacent a side shield and non-magnetic pedestal on an air bearing surface (ABS). The non-magnetic pedestal can be configured to have a greater stripe height from the ABS than the side shield.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: June 30, 2015
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay, Eric Walter Singleton
  • Patent number: 8922951
    Abstract: Various embodiments may be generally directed to a data storage device with at least a magnetic element having a magnetic stack positioned adjacent to and separated from at least one side shield on an air bearing surface (ABS). The side shield can be configured with a predetermined anisotropy variation along a down-track direction.
    Type: Grant
    Filed: December 11, 2012
    Date of Patent: December 30, 2014
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay, Konstantin Rudolfovich Nikolaev, Eric Walter Singleton, Jae-Young Yi
  • Patent number: 8885300
    Abstract: A magnetic element is generally provided that can be implemented as a data reader. Various embodiments may connect a magnetic stack to a top shield and separate the magnetic stack from a bi-layer side shield. The bi-layer side shield may have a fixed magnetization layer and a soft magnetic layer each magnetically isolated from the top shield.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: November 11, 2014
    Assignee: Seagate Technology LLC
    Inventors: Shaun Eric McKinlay, Zhiguo Ge, Eric Walter Singleton, Mohammed Shariat Ullah Patwari, Victor Boris Sapozhnikov
  • Publication number: 20140327989
    Abstract: Various embodiments may configure a data storage device with at least a magnetic element having a magnetic stack that is configured with an air bearing surface (ABS) and is separated from a side shield. The side shield can be biased by a biasing layer that contacts the side shield and is separated from the ABS.
    Type: Application
    Filed: July 16, 2014
    Publication date: November 6, 2014
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay
  • Patent number: 8854773
    Abstract: Various embodiments may configure a data storage device with at least a magnetic element having a magnetic stack that is configured with an air bearing surface (ABS) and is separated from a side shield. The side shield can be biased by a biasing layer that contacts the side shield and is separated from the ABS.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: October 7, 2014
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay
  • Publication number: 20140218823
    Abstract: A magnetic element is generally provided that can be implemented as a data reader. Various embodiments may connect a magnetic stack to a top shield and separate the magnetic stack from a bi-layer side shield. The bi-layer side shield may have a fixed magnetization layer and a soft magnetic layer each magnetically isolated from the top shield.
    Type: Application
    Filed: February 7, 2013
    Publication date: August 7, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Shaun Eric McKinlay, Zhiguo Ge, Eric Walter Singleton, Mohammed Shariat Ullah Patwari, Victor Boris Sapozhnikov
  • Publication number: 20140218825
    Abstract: Various embodiments may be generally directed to a magnetic element capable of reading magnetic data bits. Such a magnetic element may have at least a magnetic stack laterally adjacent a side shield and non-magnetic pedestal on an air bearing surface (ABS). The non-magnetic pedestal can be configured to have a greater stripe height from the ABS than the side shield.
    Type: Application
    Filed: February 1, 2013
    Publication date: August 7, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay, Eric Walter Singleton
  • Patent number: 8760820
    Abstract: A magnetic element may be constructed in accordance with various embodiments as a data reader. The magnetic element can have at least a magnetic reader that contacts a top shield and is separated from a side shield on an air bearing surface (ABS). The side shield may be antiferromagnetically coupled to the top shield via a coupling layer disposed between the top and side shields.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: June 24, 2014
    Assignee: Seagate Technology LLC
    Inventors: Shaun Eric McKinlay, Liwen Tan, Eric Walter Singleton, Mohammed Shariat Ullah Patwari, Victor Boris Sapozhnikov
  • Publication number: 20140168818
    Abstract: Implementations described and claimed herein provide a read sensor structure having a synthetic anti-ferromagnetic (SAF) structure with a pinning that is canted with respect to an air bearing surface (ABS) of the read sensor. In an implementation of the read sensor, the angle between the pinning direction of a reference layer (RL) and the pinning direction of a free layer (FL) is obtuse.
    Type: Application
    Filed: December 19, 2012
    Publication date: June 19, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Victor Boris Sapozhnikov, Scott Wilson Stokes, Jae-Young Yi, Mohammed Shariat Ullah Patwari, Yonghua Chen
  • Publication number: 20140160596
    Abstract: Various embodiments may be generally directed to a data storage device with at least a magnetic element having a magnetic stack positioned adjacent to and separated from at least one side shield on an air bearing surface (ABS). The side shield can be configured with a predetermined anisotropy variation along a down-track direction.
    Type: Application
    Filed: December 11, 2012
    Publication date: June 12, 2014
    Applicant: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay, Konstantin Rudolfovich Nikolaev, Eric Walter Singleton, Jae-Young Yi
  • Publication number: 20140153137
    Abstract: A magnetic element may be constructed in accordance with various embodiments as a data reader. The magnetic element can have at least a magnetic reader that contacts a top shield and is separated from a side shield on an air bearing surface (ABS). The side shield may be antiferromagnetically coupled to the top shield via a coupling layer disposed between the top and side shields.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Shaun Eric McKinlay, Liwen Tan, Eric Walter Singleton, Mohammed Shariat Ullah Patwari, Victor Boris Sapozhnikov
  • Publication number: 20140146418
    Abstract: Various embodiments may configure a data storage device with at least a magnetic element having a magnetic stack that is configured with an air bearing surface (ABS) and is separated from a side shield. The side shield can be biased by a biasing layer that contacts the side shield and is separated from the ABS.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari, Shaun Eric McKinlay
  • Patent number: 8737023
    Abstract: Various embodiments may be generally directed to a stack capable of reading magnetic data bits. Such a stack can have a non-magnetic spacer layer disposed between a magnetically free layer and a synthetic antiferromagnet (SAF) where the SAF is configured with an anisotropy tuned to a non-normal direction with respect to an air bearing surface (ABS).
    Type: Grant
    Filed: October 15, 2012
    Date of Patent: May 27, 2014
    Assignee: Seagate Technology LLC
    Inventors: Victor Boris Sapozhnikov, Mohammed Shariat Ullah Patwari