Patents by Inventor Mohammed Sharia Ullah Patwari
Mohammed Sharia 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).
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Patent number: 9508366Abstract: An apparatus disclosed herein includes a sensor with a free layer having cross-track easy axis anisotropy.Type: GrantFiled: August 23, 2013Date of Patent: November 29, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Patent number: 9478239Abstract: Implementations disclosed herein include a reader comprising a magnetically free layer and first barrier layer, wherein the barrier layer is in direct contact with a bottom shield in a down-track direction. Another implementation includes a device comprising a sensor stack comprising a free layer and a barrier layer; a synthetic antiferromagnetic shield layer comprising a reference layer and a pinned layer, wherein direction of magnetization of the reference layer forms an obtuse angle with direction of magnetization of the free layer in a quiescent state.Type: GrantFiled: June 27, 2013Date of Patent: October 25, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Patent number: 9324342Abstract: Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack separated by a top mid-shield and a bottom mid-shield, and a pre-amplifier circuit comprising a top lead connected to the top mid-shield, configured to collect current flowing from the top mid-shield through the top sensor stack opposite a direction of current flowing from the bottom mid-shield to a bottom lead through the bottom sensor stack.Type: GrantFiled: August 28, 2015Date of Patent: April 26, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Harry Edelman, Mohammed Sharia Ullah Patwari
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Patent number: 9286921Abstract: A sensor structure that has a sensor stack comprising a recessed AFM layer, a combined pinned layer/reference layer (PL/RL) directly on the AFM layer, a free layer (FL), and a barrier layer between the PL/RL and the FL. All the magnetic layers between the AFM layer and the FL have substantially the same magnetic orientation. The sensor structure includes a top shield and a front bottom shield adjacent to the recessed AFM layer.Type: GrantFiled: October 22, 2014Date of Patent: March 15, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Patent number: 9251815Abstract: An apparatus disclosed herein includes a sensor stack including a first layer and an AFM stabilized bottom shield in proximity to the first layer, wherein the AFM stabilized bottom shield is magnetically coupled to the first layer. The apparatus reduces shield-to-shield spacing. The pinned layer of the bottom shield and a pinned layer of the sensor stack are stabilized using the AFM layer in the bottom shield. In one implementation, the bottom shield is made of the SAF structure, with the top layer of the structure adjacent to a pinned layer in the sensor stack.Type: GrantFiled: June 28, 2013Date of Patent: February 2, 2016Assignee: SEAGATE TECHNOLOGY LLCInventors: Eric W. Singleton, Konstantin Nikolaev, Liwen Tan, Jae-Young Yi, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20150371670Abstract: Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack separated by a top mid-shield and a bottom mid-shield, and a pre-amplifier circuit comprising a top lead connected to the top mid-shield, configured to collect current flowing from the top mid-shield through the top sensor stack opposite a direction of current flowing from the bottom mid-shield to a bottom lead through the bottom sensor stack.Type: ApplicationFiled: August 28, 2015Publication date: December 24, 2015Inventors: Victor Boris Sapozhnikov, Harry Edelman, Mohammed Sharia Ullah Patwari
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Patent number: 9190082Abstract: Implementations described and claimed herein provide a dual reader wherein a bottom shield is attached to side shields.Type: GrantFiled: August 28, 2013Date of Patent: November 17, 2015Assignee: SEAGATE TECHNOLOGY, LLCInventors: Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Patent number: 9190078Abstract: Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack wherein the bottom sensor stack and the top sensor stack are mirrored along a down-track direction.Type: GrantFiled: August 30, 2013Date of Patent: November 17, 2015Assignee: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Harry Edelman, Mohammed Sharia Ullah Patwari
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Patent number: 9153252Abstract: Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack wherein the bottom sensor stack and the top sensor stack are mirrored along a down-track direction.Type: GrantFiled: August 30, 2013Date of Patent: October 6, 2015Assignee: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Harry Edelman, Mohammed Sharia Ullah Patwari
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Patent number: 9153250Abstract: An apparatus disclosed herein comprises a magnetically free layer and a bottom shield, wherein a first portion of the bottom shield substantially adjacent the free layer is pinned perpendicular to an air-bearing surface (ABS) of the apparatus and a second portion of the bottom shield not substantially adjacent the free layer is pinned parallel to the ABS of the apparatus.Type: GrantFiled: July 31, 2013Date of Patent: October 6, 2015Assignee: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Taras Grigoryevich Pokhil, Mohammed Sharia Ullah Patwari
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Publication number: 20150213815Abstract: Implementations disclosed herein provide for an apparatus, comprising a synthetic antiferromagnetic reader structure, wherein total moment of a pinned layer is substantially greater than total moment of a reference layer. In one implementation, the pinning strength of the pinned layer is substantially reduced.Type: ApplicationFiled: January 29, 2014Publication date: July 30, 2015Applicant: Seagate Technology LLCInventors: Victor Boris Sapozhnikov, Taras Grigoryevich Pokhil, Mohammed Sharia Ullah Patwari
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Patent number: 9019664Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for one or more regions of reduced anisotropy proximal to a sensor stack within a shielding structure.Type: GrantFiled: May 20, 2013Date of Patent: April 28, 2015Assignee: Seagate Technology LLCInventors: Dion Song, Dimitar Velikov Dimitrov, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20150062755Abstract: Implementations described and claimed herein provide a dual reader wherein a bottom shield is attached to side shields.Type: ApplicationFiled: August 28, 2013Publication date: March 5, 2015Applicant: Seagate Technology LLCInventors: Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20150062735Abstract: Implementations described and claimed herein provide a stacked dual reader with a bottom sensor stack and a top sensor stack wherein the bottom sensor stack and the top sensor stack are mirrored along a down-track direction.Type: ApplicationFiled: August 30, 2013Publication date: March 5, 2015Applicant: Seagate Technology LLCInventors: Victor Boris Sapozhnikov, Harry Edelman, Mohammed Sharia Ullah Patwari
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Publication number: 20150055251Abstract: An apparatus disclosed herein includes a sensor with a free layer having cross-track easy axis anisotropy.Type: ApplicationFiled: August 23, 2013Publication date: February 26, 2015Applicant: Seagate Technology LLCInventors: Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20150036245Abstract: An apparatus disclosed herein comprises a magnetically free layer and a bottom shield, wherein a first portion of the bottom shield substantially adjacent the free layer is pinned perpendicular to an air-bearing surface (ABS) of the apparatus and a second portion of the bottom shield not substantially adjacent the free layer is pinned parallel to the ABS of the apparatus.Type: ApplicationFiled: July 31, 2013Publication date: February 5, 2015Applicant: Seagate Technology LLCInventors: Victor Boris Sapozhnikov, Taras Grigoryevich Pokhil, Mohammed Sharia Ullah Patwari
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Publication number: 20150002962Abstract: An apparatus disclosed herein includes a sensor stack including a first layer and an AFM stabilized bottom shield in proximity to the first layer, wherein the AFM stabilized bottom shield is magnetically coupled to the first layer.Type: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Inventors: Eric W. Singleton, Konstantin Nikolaev, Liwen Tan, Jae-Young Yi, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20150002964Abstract: An apparatus disclosed herein includes a sensor stack including a first layer and a barrier layer, wherein the barrier layer is in contact with a bottom shield.Type: ApplicationFiled: June 27, 2013Publication date: January 1, 2015Inventors: Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20140340793Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for one or more regions of reduced anisotropy proximal to a sensor stack within a shielding structure.Type: ApplicationFiled: May 20, 2013Publication date: November 20, 2014Applicant: Seagate Technology LLCInventors: Dion Song, Dimitar Velikov Dimitrov, Victor Boris Sapozhnikov, Mohammed Sharia Ullah Patwari
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Publication number: 20140254047Abstract: An apparatus comprising a base shield and a sensor stack, wherein the base shield is separated from the sensor stack via a first soft magnetic layer that is magnetically decoupled form the base shield.Type: ApplicationFiled: March 8, 2013Publication date: September 11, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Victor Boris Sapozhnikov, Taras Grigoryevich Pokhil, Mohammed Sharia Ullah Patwari