Patents by Inventor Venkateswara Rao Inturi
Venkateswara Rao Inturi 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: 11798581Abstract: A hard disk drive (HDD) includes a heat-assisted magnetic recording (HAMR) head. The HAMR head includes one or more features comprising a nanoparticle-reinforced plasmonic matrix. The nanoparticle-reinforced plasmonic matrix comprises a plasmonic metal and a plurality of nanoparticles dispersed in the plasmonic metal. The nanoparticles comprise a transparent conductive oxide.Type: GrantFiled: April 1, 2022Date of Patent: October 24, 2023Assignee: SEAGATE TECHNOLOGY LLCInventors: Venkateswara Rao Inturi, Michael C. Kautzky, Tong Zhao
-
Patent number: 10964342Abstract: A method of controlling a shape and size of at least one solder joint of a magnetic recording head that includes a trailing surface and a plurality of bond pads, wherein each bond pad comprises a base layer comprising a top surface and a top edge, the method including the steps of forming at least one solder dam by covering a portion of the top surface of the base layer of at least one of the bond pads with a coating layer that comprises a nonwettable, electrically conductive material positioned adjacent to the top edge of at least one of the bond pads, thereby defining a coated portion and an uncoated portion of the base layer, and applying solder material to the uncoated portion of the base layer adjacent to the solder dam so that the coating layer constrains movement of the solder material beyond the uncoated portion.Type: GrantFiled: June 2, 2020Date of Patent: March 30, 2021Assignee: Seagate Technology LLCInventors: Robbee Lee Grimm, Greg Arthur Schmitz, Venkateswara Rao Inturi, Aaron Michael Collins
-
Patent number: 10706880Abstract: A magnetic recording head is provided including a body with a trailing surface, a plurality of bond pads in a row, each of which is spaced by a gap from an adjacent bond pad along a width of the trailing surface. Each bond pad includes a base layer having a top surface, a coating layer covering at least a portion of the top surface of the base layer, two side edges spaced from each other across a width of the bond pad, wherein a width of the gap between adjacent bond pads is defined by one side edge of each of two adjacent bond pads, a top edge extending between the two side edges, and at least one solder dam comprising a nonwettable, electrically conductive material positioned adjacent to the top edge of at least one of the bond pads.Type: GrantFiled: April 2, 2019Date of Patent: July 7, 2020Assignee: Seagate Technology LLCInventors: Robbee Lee Grimm, Greg Arthur Schmitz, Venkateswara Rao Inturi, Aaron Michael Collins
-
Patent number: 9922671Abstract: A write head having a main pole, a gap layer, and at least two sacrificial layers. In accordance with one embodiment, a method includes depositing a non-magnetic gap layer of material above a main pole layer of magnetic material; depositing a sacrificial layer of material above the non-magnetic gap layer of material; etching a portion of the sacrificial layer of material while not entirely removing the sacrificial layer of material; and depositing additional sacrificial material to the etched sacrificial layer.Type: GrantFiled: November 23, 2015Date of Patent: March 20, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Wei Tian, Venkateswara Rao Inturi, Dong Lin, Huaqing Yin, Jiaoming Qiu
-
Patent number: 9761252Abstract: An apparatus has a main pole layer of magnetic material, a second layer of magnetic material, a first gap layer of non-magnetic material between the main pole layer and the second layer of magnetic material, and a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material. The second gap layer of non-magnetic material can be directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. A method of manufacturing such a device is also described.Type: GrantFiled: August 28, 2015Date of Patent: September 12, 2017Assignee: SEAGATE TECHNOLOGY LLCInventors: Wei Tian, Venkateswara Rao Inturi, Dong Lin, Huaqing Yin, Jiaoming Qiu
-
Patent number: 9664572Abstract: An apparatus comprises a head transducer and a resistive temperature sensor provided on the head transducer. The resistive temperature sensor comprises a first layer comprising a conductive material and having a temperature coefficient of resistance (TCR) and a second layer comprising at least one of a specular layer and a seed layer. A method is disclosed to fabricate such sensor with a laminated thin film structure to achieve a large TCR. The thicknesses of various layers in the laminated thin film are in the range of few to a few tens of nanometers. The combinations of the deliberately optimized multilayer thin film structures and the fabrication of such films at the elevated temperatures are disclosed to obtain the large TCR.Type: GrantFiled: November 28, 2012Date of Patent: May 30, 2017Assignee: SEAGATE TECHNOLOGY LLCInventors: Wei Tian, Declan Macken, Huaqing Yin, Venkateswara Rao Inturi, Eric Walter Singleton
-
Publication number: 20160078887Abstract: In accordance with one embodiment, a method may be implemented by depositing a non-magnetic gap layer of material above a main pole layer of magnetic material; depositing a sacrificial layer of material above the non-magnetic gap layer of material; etching a portion of the sacrificial layer of material while not entirely removing the sacrificial layer of material; and depositing additional sacrificial material to the etched sacrificial layer.Type: ApplicationFiled: November 23, 2015Publication date: March 17, 2016Inventors: Wei Tian, Venkateswara Rao Inturi, Dong Lin, Huaqing Yin, Jiaoming Qiu
-
Publication number: 20150371668Abstract: An apparatus has a main pole layer of magnetic material, a second layer of magnetic material, a first gap layer of non-magnetic material between the main pole layer and the second layer of magnetic material, and a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material. The second gap layer of non-magnetic material can be directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. A method of manufacturing such a device is also described.Type: ApplicationFiled: August 28, 2015Publication date: December 24, 2015Inventors: Wei Tian, Venkateswara Rao Inturi, Dong Lin, Huaqing Yin, Jiaoming Qiu
-
Patent number: 9214167Abstract: In accordance with one embodiment, an apparatus may be implemented that comprises a main pole layer of magnetic material, a non-magnetic gap layer of material above the main pole layer, an etched first sacrificial layer of material above the non-magnetic gap layer of material, and a second sacrificial layer of material above the etched first sacrificial layer of material.Type: GrantFiled: March 12, 2013Date of Patent: December 15, 2015Assignee: SEAGATE TECHNOLOGY LLCInventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
-
Patent number: 9147407Abstract: In accordance with one embodiment, an apparatus includes a main pole layer of magnetic material; a second layer of magnetic material; a first gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; wherein the second gap layer of non-magnetic material is disposed directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. A method of manufacturing such a device is also described.Type: GrantFiled: March 12, 2013Date of Patent: September 29, 2015Assignee: SEAGATE TECHNOLOGY LLCInventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
-
Patent number: 9142226Abstract: 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: GrantFiled: June 29, 2012Date of Patent: September 22, 2015Assignee: Seagate Technology LLCInventors: Venkateswara Rao Inturi, Wei Tian, Huaqing Yin, Michael C. Kautzky, Mark Thomas Kief, Meng Zhu, Eliot Lewis Cuthbert Estrine
-
Patent number: 9034150Abstract: An apparatus and associated method are generally described as a thin film exhibiting a tuned anisotropy and magnetic moment. Various embodiments may form a magnetic layer that is tuned to a predetermined anisotropy and magnetic moment through deposition of a material on a substrate cooled to a predetermined substrate temperature.Type: GrantFiled: November 29, 2012Date of Patent: May 19, 2015Assignee: Seagate Technology LLCInventors: Venkateswara Rao Inturi, Wei Tian, Joseph Mundenar
-
Patent number: 8945405Abstract: A magneto-resistive reader includes a first magnetic shield element, a second magnetic shield element and a magneto-resistive sensor stack separating the first magnetic shield element from the second magnetic shield element. The first shield element includes two ferromagnetic anisotropic layers separated by a grain growth suppression layer.Type: GrantFiled: April 23, 2013Date of Patent: February 3, 2015Assignee: Seagate Technology LLCInventors: Vladyslav Alexandrovich Vas'ko, Venkateswara Rao Inturi, Michael C. Kautzky, Zhihong Lu, Mark T. Kief, Yifan Zhang
-
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
-
Patent number: 8842391Abstract: An apparatus including a near field transducer positioned adjacent to an air bearing surface, the near field transducer including an electrically conductive nitride; a first magnetic pole; and a heat sink, a diffusion barrier layer, or both positioned between the first magnetic pole and the near field transducer, wherein the heat sink, the diffusion barrier or both include rhodium (Rh) or an alloy thereof; ruthenium (Ru) or an alloy thereof titanium (Ti) or an alloy thereof tantalum (Ta) or an alloy thereof tungsten (W) or an alloy thereof borides; nitrides; transition metal oxides; or palladium (Pd) or an alloy thereof.Type: GrantFiled: October 24, 2013Date of Patent: September 23, 2014Assignee: Seagate Technology LLCInventors: Jie Zou, Kaizhong Gao, William Albert Challener, Mark Henry Ostrowski, Venkateswara Rao Inturi, Tong Zhao, Michael Christopher Kautzky
-
Publication number: 20140268415Abstract: In accordance with one embodiment, a method may be implemented by depositing a non-magnetic gap layer of material above a main pole layer of magnetic material; depositing a sacrificial layer of material above the non-magnetic gap layer of material; etching a portion of the sacrificial layer of material while not entirely removing the sacrificial layer of material; and depositing additional sacrificial material to the etched sacrificial layer.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
-
Publication number: 20140272471Abstract: In accordance with one embodiment, an apparatus can be configured that includes a main pole layer of magnetic material; a second layer of magnetic material; a first gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; and wherein the second gap layer of non-magnetic material is disposed directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, a method of manufacturing such a device may also be utilized.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Applicant: Seagate Technology LLCInventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
-
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
-
Publication number: 20140147702Abstract: An apparatus and associated method are generally described as a thin film exhibiting a tuned anisotropy and magnetic moment. Various embodiments may form a magnetic layer that is tuned to a predetermined anisotropy and magnetic moment through deposition of a material on a substrate cooled to a predetermined substrate temperature.Type: ApplicationFiled: November 29, 2012Publication date: May 29, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Venkateswara Rao Inturi, Wei Tian, Joseph Mundenar
-
Publication number: 20140146856Abstract: An apparatus comprises a head transducer and a resistive temperature sensor provided on the head transducer. The resistive temperature sensor comprises a first layer comprising a conductive material and having a temperature coefficient of resistance (TCR) and a second layer comprising at least one of a specular layer and a seed layer. A method is disclosed to fabricate such sensor with a laminated thin film structure to achieve a large TCR. The thicknesses of various layers in the laminated thin film are in the range of few to a few tens of nanometers. The combinations of the deliberately optimized multilayer thin film structures and the fabrication of such films at the elevated temperatures are disclosed to obtain the large TCR.Type: ApplicationFiled: November 28, 2012Publication date: May 29, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Wei Tian, Declan Macken, Huaqing Yin, Venkateswara Rao Inturi, Eric Walter Singleton