Patents by Inventor Yongjun Zhao

Yongjun Zhao 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: 8514671
    Abstract: A slider may have a first surface on an air bearing surface (ABS) and a laser recess formed in a second surface of the slider, opposite the first surface. A laser can then be positioned in the laser recess with the laser extending from the slider to a top plane. A stud may be formed adjacent to and separated from the laser on the second surface of the slider with the stud extending from the second surface of the slider to the top plane.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: August 20, 2013
    Assignee: Seagate Technology LLC
    Inventors: Yongjun Zhao, Mike Allen Seigler, Mark Henry Ostrowski
  • Publication number: 20130202530
    Abstract: Novel radiotracer(s) for Positron Emission Tomography (PET) or Single Photon Emission Computed Tomography (SPECT) imaging of disease states related to altered choline metabolism (e.g., tumor imaging of prostate, breast, brain, esophageal, ovarian, endometrial, lung and prostate cancer—primary tumor, nodal disease or metastases). The present invention also describes intermediate(s), pre-cursor(s), pharmaceutical composition(s), methods of making, and methods of use of the novel radiotracer(s).
    Type: Application
    Filed: September 20, 2011
    Publication date: August 8, 2013
    Applicants: IMPERIAL COLLEGE, GE HEALTHCARE LIMITED
    Inventors: Eric Ofori Aboagye, Edward George Robins, Graham Smith, Yongjun Zhao, David Turton, Anthony Wilson, Rajiv Bhalla, Diana Brickute
  • Publication number: 20130178653
    Abstract: The present invention describes intermediate(s), pre-cursor(s), for the preparation of radialabelled choline analogs to be used as radiotracers for Positron Emission Tomography (PET) or Single Photon Emission Computed Tomography (SPECT) imaging of diseases.
    Type: Application
    Filed: September 20, 2011
    Publication date: July 11, 2013
    Applicants: IMPERIAL COLLEGE, GE HEALTHCARE LIMITED
    Inventors: Eric Ofori Aboagye, Edward George Robins, Graham Smith, Yongjun Zhao
  • Patent number: 8416647
    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: June 8, 2012
    Date of Patent: April 9, 2013
    Assignee: Seagate Technology LLC
    Inventors: Yongjun Zhao, Shuaigang Xiao
  • Publication number: 20130084441
    Abstract: Disclosed herein is a method for fabricating an optical device that includes depositing an etch stop material to form an etch stop layer, wherein the etch stop material has a refractive index in the infrared wavelength range, n1; depositing a core material to form a core layer, wherein the core material has a refractive index in the infrared wavelength range, n2; and etching the core layer using a halide based etch process, wherein the etch stop material has an etch rate in the halide based etch process and the core material has an etch rate in the halide based etch process, wherein the etch rate of the core material is at least about five times higher than the etch rate of the etch stop material, and wherein n1 is not greater than n2.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 4, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Xiaoyue Huang, Lijuan Zou, Yongjun Zhao, Michael Kautzky
  • Publication number: 20130064502
    Abstract: A plasmonic transducer includes at least two metal elements with a gap therebetween. The metal elements are elongated along a plasmon-enhanced, near-field radiation delivery axis. Cross sections of the metal elements in a plane normal to the delivery axis vary in shape along the delivery axis. A waveguide is disposed along an elongated side of the plasmonic transducer. The waveguide is optically coupled to the plasmonic transducer along the elongated side.
    Type: Application
    Filed: September 13, 2011
    Publication date: March 14, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Chubing Peng, Yongjun Zhao
  • Patent number: 8385159
    Abstract: A magnetic recording head consists of a write pole and a near field transducer close to the write pole that focuses light energy to a focal point. A near field transducer is positioned to receive light energy from a waveguide. The near field transducer comprises an energy-receiving end and an energy-radiating end. The energy-receiving end is located near the focal point of the waveguide and the energy-radiating end is shaped such that it is narrower closer to the write pole and wider farther from the write pole.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: February 26, 2013
    Assignee: Seagate Technology LLC
    Inventors: Kaizhong Gao, Yongjun Zhao, William A. Challener, Xuhui Jin
  • Patent number: 8379494
    Abstract: An apparatus includes a light source for producing a beam of light, a coupler for coupling the light into a slider waveguide, a beam expander for expanding the beam of light from the waveguide to produce an expanded beam, a collimator for collimating the expanded beam, and a focusing device for concentrating the collimated beam to a focal point. A method of delivering light to a focal point is also described.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: February 19, 2013
    Assignee: Seagate Technology LLC
    Inventors: Chubing Peng, Yongjun Zhao
  • Publication number: 20130028060
    Abstract: A slider may have a first surface on an air bearing surface (ABS) and a laser recess formed in a second surface of the slider, opposite the first surface. A laser can then be positioned in the laser recess with the laser extending from the slider to a top plane. A stud may be formed adjacent to and separated from the laser on the second surface of the slider with the stud extending from the second surface of the slider to the top plane.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Yongjun Zhao, Mike Allen Seigler, Mark Henry Ostrowski
  • 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
  • Publication number: 20120201107
    Abstract: An apparatus includes a light source for producing a beam of light, a coupler for coupling the light into a slider waveguide, a beam expander for expanding the beam of light from the waveguide to produce an expanded beam, a collimator for collimating the expanded beam, and a focusing device for concentrating the collimated beam to a focal point. A method of delivering light to a focal point is also described.
    Type: Application
    Filed: February 3, 2011
    Publication date: August 9, 2012
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Chubing Peng, Yongjun Zhao
  • Publication number: 20120099407
    Abstract: A write head includes a cavity configured to couple a laser diode to the write head. A bottom of the cavity includes a heat conductive element configured to contact the laser diode, a plurality of thermal studs disposed below the heat conductive element, and a substrate disposed below the thermal studs. The heat conductive element, thermal studs, and substrate are thermally coupled to draw heat from the laser diode.
    Type: Application
    Filed: October 20, 2011
    Publication date: April 26, 2012
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Roger L. Hipwell, Yongjun Zhao, Mark Ostrowski, Andrew D. Habermas
  • Publication number: 20120044967
    Abstract: A method includes: positioning a laser in the cavity in an end of a slider, wherein the laser has an output facet positioned adjacent to a first wall of the cavity to define a first gap between the output facet and the first wall of the cavity, and filling at least a portion of the first gap adjacent to the output facet. An apparatus including a slider including a cavity in a trailing end of the slider, a laser positioned in the cavity and having an output facet positioned adjacent to a first wall of the cavity to define a first gap between the output facet and the first wall of the cavity, and a sealing material filling at least a portion of the first gap adjacent to the output facet is also provided.
    Type: Application
    Filed: February 22, 2011
    Publication date: February 23, 2012
    Applicant: Seagate Technology LLC
    Inventors: Douglas Cole, Lijuan Zhong, Roger Lee Hipwell, JR., Joseph Michael Stephan, Scott Eugene Olson, Tanya Jegeris Snyder, Yongjun Zhao
  • Publication number: 20110286127
    Abstract: A magnetic recording head consists of a write pole and a near field transducer close to the write pole that focuses light energy to a focal point. A near field transducer is positioned to receive light energy from a waveguide. The near field transducer comprises an energy-receiving end and an energy-radiating end. The energy-receiving end is located near the focal point of the waveguide and the energy-radiating end is shaped such that it is narrower closer to the write pole and wider farther from the write pole.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Kaizhong Gao, Yongjun Zhao, William A. Challener, Xuhui Jin
  • Patent number: 7999139
    Abstract: The invention relates to a process for the production of an [18F]fluorohaloalkane which comprises treatment of a solid support-bound precursor of formula (I): SOLID SUPPORT-LINKER-SO2—O—(CH2)nX??(I) wherein n is an integer of from 1 to 7 and X is chloro, bromo or iodo; with 18F? to produce the [18F]fluorohaloalkane of formula (II) 18F—(CH2)n—X??(II) wherein n and X are as defined for the compound of formula (I), optionally followed by (i) removal of excess 18F?, for example by ion-exchange chromatography; and/or (ii) removal of organic solvent.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: August 16, 2011
    Assignee: Hammersmith Imanet Limited
    Inventors: Frank Brady, Sajinder Kaur Luthra, Yongjun Zhao
  • Patent number: 7903533
    Abstract: An apparatus includes a storage medium, and a transducer positioned adjacent to the storage medium, wherein the transducer includes a first electrode and a second electrode, with the width of the first electrode being less than the width of the second electrode. A method including: applying a first voltage to a transducer to write data to a storage medium, and applying a second voltage to the transducer to read data from the storage medium, wherein the magnitude of the first voltage is greater than the magnitude of the second voltage.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: March 8, 2011
    Assignee: Seagate Technology LLC
    Inventors: Mark David Bedillion, Andreas Karl Roelofs, Earl Chrzaszcz Johns, Yongjun Zhao, Edward Stephen Skalko
  • Publication number: 20090317328
    Abstract: Novel compounds of formula (I): suitable for use as in vivo imaging agents are provided as well as precursors suitable for the preparation of said compounds. The present invention also provides pharmaceuticals comprising the compounds and kits for the preparation of the pharmaceuticals. Furthermore, use of the compounds for imaging peripheral benzodiazepine receptors in a subject is provided, in particular for imaging pathological conditions in which PBR are upregulated, e.g. Parkinson's disease, multiple sclerosis, Alzheimer's disease and Huntington's disease, neuropathic pain, arthritis, asthma, atherosclerosis and cancer.
    Type: Application
    Filed: May 31, 2007
    Publication date: December 24, 2009
    Inventors: Erik Arstad, Edward George Robins, Yongjun Zhao
  • Publication number: 20090009906
    Abstract: An apparatus includes a storage medium, a transducer positioned adjacent to the storage medium and along an axis, and first and second support members connected to the transducer at positions that are spaced apart in the direction of the axis.
    Type: Application
    Filed: July 2, 2007
    Publication date: January 8, 2009
    Applicant: Seagate Technology LLC
    Inventors: Wayne Allen Bonin, Earl Chrzaszcz Johns, Yongjun Zhao
  • Publication number: 20080259779
    Abstract: An apparatus includes a storage medium, and a transducer positioned adjacent to the storage medium, wherein the transducer includes a first electrode and a second electrode, with the width of the first electrode being less than the width of the second electrode. A method including: applying a first voltage to a transducer to write data to a storage medium, and applying a second voltage to the transducer to read data from the storage medium, wherein the magnitude of the first voltage is greater than the magnitude of the second voltage.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 23, 2008
    Applicant: Seagate Technology LLC
    Inventors: Mark David Bedillion, Andreas Karl Roelofs, Earl Chrzaszcz Johns, Yongjun Zhao, Edward Stephen Skalko
  • Patent number: 7405332
    Abstract: The invention provides a process for preparation of a fluorohaloalkane, preferably an [18F]fluorohaloalkane of formula (I) wherein X is halo and n is an integer of from 1 to 6; which comprises: reaction of the corresponding organosilicon compound of formula (II): wherein n is as defined for the compound of formula (I); and R?, R?, and R?? are independently selected from C1-6 alkyl and C1-6 haloalkyl; and R? may alternatively be the group: with a compound of formula (III): wherein X is as defined for the compound of formula (I) and Y is halo. Intermediates having use in such processes are also claimed.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: July 29, 2008
    Assignee: Hammersmith Imanet Ltd.
    Inventors: Frank Brady, Sajinder Luthra, Yongjun Zhao