Patents Represented by Attorney, Agent or Law Firm Mueting & Raasch
  • Patent number: 8309945
    Abstract: Programmable metallization memory cells having a planarized silver electrode and methods of forming the same are disclosed. The programmable metallization memory cells include a first metal contact and a second metal contact, an ion conductor solid electrolyte material is between the first metal contact and the second metal contact, and either a silver alloy doping electrode separates the ion conductor solid electrolyte material from the first metal contact or the second metal contact, or a silver doping electrode separates the ion conductor solid electrolyte material from the first metal contact. The silver electrode includes a silver layer and a metal seed layer separating the silver layer from the first metal contact.
    Type: Grant
    Filed: February 15, 2012
    Date of Patent: November 13, 2012
    Assignee: Seagate Technology LLC
    Inventors: Wei Tian, Dexin Wang, Venugopalan Vaithyanathan, Yang Dong, Muralikrishnan Balakrishnan, Ivan Petrov Ivanov, Ming Sun, Dimitar Velikov Dimitrov
  • Patent number: 8296620
    Abstract: A method of utilizing at least one block of data, wherein the at least one block of data includes a plurality of cells for storing data and at least one error flag bit, the method including: scanning the block of data for errors; determining the error rate of the block of data; and applying an error correction code to data being read from or written to a cell within the at least one block of data, wherein the error correction code is applied based on the error rate, wherein a weak error correction code is applied when the error rate is below an error threshold, and a strong error correction code is applied when the error rate is at or above the error threshold.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: October 23, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yiran Chen, Hai Li, Hongyue Liu, Yong Lu, Song S. Xue
  • Patent number: 8293571
    Abstract: A programmable metallization cell (PMC) that includes an active electrode; a nanoporous layer disposed on the active electrode, the nanoporous layer comprising a plurality of nanopores and a dielectric material; and an inert electrode disposed on the nanoporous layer. Other embodiments include forming the active electrode from silver iodide, copper iodide, silver sulfide, copper sulfide, silver selenide, or copper selenide and applying a positive bias to the active electrode that causes silver or copper to migrate into the nanopores. Methods of formation are also disclosed.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: October 23, 2012
    Assignee: Seagate Technology LLC
    Inventors: Venkatram Venkatasamy, Ming Sun, Michael Xuefei Tang
  • Patent number: 8294227
    Abstract: A magnetic cell includes a ferromagnetic free layer having a free magnetization orientation direction and a first ferromagnetic pinned reference layer having a first reference magnetization orientation direction that is parallel or anti-parallel to the free magnetization orientation direction. A first oxide barrier layer is between the ferromagnetic free layer and the first ferromagnetic pinned reference layer. The magnetic cell further includes a second ferromagnetic pinned reference layer having a second reference magnetization orientation direction that is orthogonal to the first reference magnetization orientation direction. The ferromagnetic free layer is between the first ferromagnetic pinned reference layer and the second ferromagnetic pinned reference layer.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: October 23, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yuankai Zheng, Zheng Gao, Wenzhong Zhu, Wonjoon Jung, Haiwen Xi
  • Patent number: 8295072
    Abstract: Non-volatile magnetic random access memory (MRAM) devices that include magnetic flip-flop structures that include a magnetization controlling structure; a first tunnel barrier structure; and a magnetization controllable structure that includes a first polarizing layer; and a first stabilizing layer, wherein the first tunnel barrier structure is between the magnetization controllable structure and the magnetization controlling structure and the first polarizing layer is between the first stabilizing layer and the first tunnel barrier structure, wherein the magnetic flip-flop device has two stable overall magnetic; configurations a second tunnel barrier structure and a reference layer, wherein the second tunnel barrier structure is between the magnetic flip-flop device and the reference layer.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: October 23, 2012
    Assignee: Seagate Technology LLC
    Inventors: Dimitar V. Dimitrov, Olle Gunnar Heinonen, Yiran Chen, Haiwen Xi, Xiaohua Lou
  • Patent number: 8294228
    Abstract: A magnetic tunnel junction includes an amorphous ferromagnetic reference layer having a first reference layer side and an opposing second reference layer side. The first reference layer side has a greater concentration of boron than the second reference layer side. A magnesium oxide tunnel barrier layer is disposed on the second side of the amorphous ferromagnetic reference layer. The magnesium oxide tunnel barrier layer has a crystal structure. An amorphous ferromagnetic free layer is disposed on the magnesium oxide tunnel barrier layer.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: October 23, 2012
    Assignee: Seagate Technology LLC
    Inventors: Xilin Peng, Konstantin Nikolaev, Taras Pokhil, Victor Sapazhnikov, Yonghua Chen
  • Patent number: 8294838
    Abstract: Nematic liquid crystal cells with positive dielectric anisotropy that include colloidal suspensions having nanoclusters are provided as well as methods of inducing Freedericksz transitions therein and methods of controlling the alignment of a liquid crystal.
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: October 23, 2012
    Assignee: University of Manitoba
    Inventors: Torsten Hegmann, Hao Qi
  • Patent number: 8286333
    Abstract: A method of fabricating a recording head includes depositing an insulator material onto at least a portion of a first member, wherein the insulator material forms an insulator film having a film thickness. The method further includes depositing a writer pole material onto the insulator film, wherein the writer pole material forms a writer pole member, and wherein the insulator film is between the writer pole member and a contact layer. Further, in some embodiments, the film thickness determines the distance between the writer pole member and the first contact member and also determines the distance between the writer pole member and the second contact member.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Nurul Amin, Ibro Tabakovic, Eric S. Linville, Ming Sun
  • Patent number: 8289758
    Abstract: Magnetic tunnel junctions having a specular insulative spacer are disclosed. The magnetic tunnel junction includes a free magnetic layer, a reference magnetic layer, an electrically insulating and non-magnetic tunneling barrier layer separating the free magnetic layer from the reference magnetic layer, and an electrically insulating and electronically reflective layer positioned to reflect at least a portion of electrons back into the free magnetic layer.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yuankai Zheng, Dimitar V. Dimitrov, Wei Tian, Dexin Wang, Zheng Gao, Xiaobin Wang
  • Patent number: 8288753
    Abstract: Programmable metallization memory cells include an electrochemically active electrode and an inert electrode and an ion conductor solid electrolyte material between the electrochemically active electrode and the inert electrode. An electrically insulating oxide layer separates the ion conductor solid electrolyte material from the electrochemically active electrode.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Ming Sun, Michael Xuefei Tang, Insik Jin, Venkatram Venkatasamy, Philip George Pitcher, Nurul Amin
  • Patent number: 8289746
    Abstract: A memory unit includes a magnetic tunnel junction data cell is electrically coupled to a bit line and a source line. The magnetic tunnel junction data cell is configured to switch between a high resistance state and a low resistance state by passing a write current through the magnetic tunnel junction data cell. A first diode is electrically between the magnetic tunnel junction data cell and the source line and a second diode is electrically between the magnetic tunnel junction data cell and the source line. The first diode and second diode are in parallel electrical connection, and having opposing forward bias directions. The memory unit is configured to be precharged to a specified precharge voltage level and the precharge voltage is less than a threshold voltage of the first diode and second diode.
    Type: Grant
    Filed: November 18, 2010
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yiran Chen, Hai Li, Hongyue Liu, Yong Lu, Song S. Xue
  • Patent number: 8288023
    Abstract: A magnetic tunnel junction cell having a free layer, a ferromagnetic pinned layer, and a barrier layer therebetween. The free layer has a central ferromagnetic portion and a stabilizing portion radially proximate the central ferromagnetic portion. The construction can be used for both in-plane magnetic memory cells where the magnetization orientation of the magnetic layer is in the stack film plane and out-of-plane magnetic memory cells where the magnetization orientation of the magnetic layer is out of the stack film plane, e.g., perpendicular to the stack plane.
    Type: Grant
    Filed: December 23, 2010
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Kaizhong Gao, Haiwen Xi
  • Patent number: 8289647
    Abstract: A magnetic recording head includes a magnetic recording write element including a main pole having a leading edge, an opposing trailing edge, a first side surface and a second side surface. A first side magnetic shield is positioned adjacent the first side surface and a second side magnetic shield positioned adjacent to the second side surface. First and second side shields are separated from the main pole by a first and second side shield gap. A front magnetic shield is separated from the main pole trailing edge by a front shield gap. A recess extends into the front shield adjacent to the trailing edge, and parallel to the trailing edge, and extends laterally away from the main pole and into the front shield a distance greater than the first or second side shield gap.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Mourad Benakli, Sharat Batra
  • Patent number: 8288130
    Abstract: A palladate palladium-promoted hydrolytic polypeptide cleavage process which selectively cleaves the polypeptide at a Cys-His cleavage site comprising solubilizing the polypeptide in a reaction mixture comprised of a palladate palladium promoter dissolved in a high-concentration acidic organic acid solvent.
    Type: Grant
    Filed: June 7, 2010
    Date of Patent: October 16, 2012
    Assignee: Medtronic, Inc.
    Inventors: Jin Seog Seo, Daniel Strydom, Barton Holmquist
  • Patent number: 8286329
    Abstract: A near field transducer (NFT) that includes a disk, the disk having a top surface, a side surface, and a center; a peg, the peg positioned adjacent the side surface of the disk; and a heat sink, the heat sink positioned on the top surface of the disk, and the heat sink having an effective center, wherein the NFT has a peg axis, which is defined by the location of the peg adjacent the side surface of the disk, and a non-peg axis, which is perpendicular to the peg axis, and wherein the effective center of the heat sink is positioned at about the center of the disk.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yongjun Zhao, Shuaigang Xiao
  • Patent number: 8289756
    Abstract: An apparatus that includes a magnetic structure including a reference layer; and a free layer; an exchange coupling spacer layer; and a stabilizing layer, wherein the exchange coupling spacer layer is between the magnetic structure and the stabilizing layer and exchange couples the free layer of the magnetic structure to the stabilizing layer.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Yuankai Zheng, Dimitar V. Dimitrov, Dexin Wang, Haiwen Xi, Xiaobin Wang, Wei Tian, Xiaohua Lou
  • Patent number: 8288254
    Abstract: Programmable metallization memory cells having a planarized silver electrode and methods of forming the same are disclosed. The programmable metallization memory cells include a first metal contact and a second metal contact, an ion conductor solid electrolyte material is between the first metal contact and the second metal contact, and either a silver alloy doping electrode separates the ion conductor solid electrolyte material from the first metal contact or the second metal contact, or a silver doping electrode separates the ion conductor solid electrolyte material from the first metal contact. The silver electrode includes a silver layer and a metal seed layer separating the silver layer from the first metal contact.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Wei Tian, Dexin Wang, Venugopalan Vaithyanathan, Yang Dong, Muralikrishnan Balakrishnan, Ivan Petrov Ivanov, Ming Sun, Dimitar Velikov Dimitrov
  • Patent number: 8288749
    Abstract: A switching element that includes a first semiconductor layer, the first semiconductor layer having a first portion and a second portion; a second semiconductor layer, the second semiconductor layer having a first portion and a second portion; an insulating layer disposed between the first semiconductor layer and the second semiconductor layer; a first metal contact in contact with the first portion of the first semiconductor layer forming a first junction and in contact with the first portion of the second semiconductor layer forming a second junction; a second metal contact in contact with the second portion of the first semiconductor layer forming a third junction and in contact with the second portion of the second semiconductor layer forming a fourth junction, wherein the first junction and the fourth junction are Schottky contacts, and the second junction and the third junction are ohmic contacts.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: October 16, 2012
    Assignee: Seagate Technology LLC
    Inventors: Young Pil Kim, Nurul Amin, Dadi Setiadi, Venugopalan Vaithyanathan, Wei Tian, Insik Jin
  • Patent number: 8287535
    Abstract: Apparatus and methods for internal surgical procedures are disclosed. The apparatus and methods may involve supporting internal body locations, creating submucosal separations (blebs), and/or for resecting mucosal tissue separated from underlying tissue by a bleb.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: October 16, 2012
    Assignee: Mayo Foundation for Medical Education and Research
    Inventors: Jose G. de la Mora Levy, Christopher J. Gostout
  • Patent number: D669966
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: October 30, 2012
    Assignee: Alternative Energy, Inc.
    Inventor: Steven W. Claussen