Patents by Inventor William H. Park

William H. Park 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).

  • Publication number: 20110114851
    Abstract: A ribbon-shaped ion beam having an elongate cross-section normal to a beam direction is modified by generating, at a predetermined position along the ribbon-shaped beam, a magnetic field extending in an x-direction along an x-axis. The x-direction magnetic field has a non-uniform intensity which is a desired function of x.
    Type: Application
    Filed: February 10, 2010
    Publication date: May 19, 2011
    Applicant: TWIN CREEKS TECHNOLOGIES, INC.
    Inventors: Kenneth Harry Purser, William H. Park, JR.
  • Publication number: 20110114850
    Abstract: A ribbon-shaped ion beam is modified using multiple coil structures on a pair of opposed ferromagnetic bars. The coil structures comprise continuous windings which have predetermined variations along the length of the bar of turns per unit length. In an example, one coil structure may have uniform turns per unit length along the bar, so that energizing the coil structures forms a magnetic field component extending across the gap between the bars with a quadrupole intensity distribution. A second coil structure may have turns per unit length varying to produce a hexapole magnetic field intensity distribution. Further coil structures may be provided to produce octopole and decapole magnetic field distributions. The coil structures may be energized to produce magnetic fields parallel to the bars which vary along the length of the bars, to twist or flatten the ribbon-shaped beam.
    Type: Application
    Filed: November 19, 2009
    Publication date: May 19, 2011
    Applicant: TWIN CREEKS TECHNOLOGIES, INC.
    Inventors: Kenneth H. Purser, William H. Park, JR.
  • Publication number: 20110073781
    Abstract: An ion implanter has an implant wheel with a plurality of wafer carriers distributed about a periphery of the wheel. Each wafer carrier has a heat sink for removing heat from a wafer on the carrier during the implant process by thermal contact between the wafer and the heat sink. The wafer carriers have wafer retaining fences formed as cylindrical rollers with axes in the respective wafer support planes of the wafer carriers. The cylindrical surfaces of the rollers provide wafer abutment surfaces which can move transversely to the wafer support surfaces so that no transverse loading is applied by the fences to wafer edges as the wafer is pushed against the heat sink by centrifugal force. The wafer support surfaces comprise layers of elastomeric material and the movable abutment surfaces of the fences allow even thermal coupling with the heat sink over the whole area of the wafer.
    Type: Application
    Filed: September 30, 2010
    Publication date: March 31, 2011
    Applicant: TWIN CREEKS TECHNOLOGIES, INC.
    Inventors: William H. Leavitt, Theodore H. Smick, Joseph Daniel Gillespie, William H. Park, Paul Eide, Drew Arnold, Geoffrey Ryding
  • Patent number: 5468217
    Abstract: An ankle calf exerciser/phlebo pump adapted to reduce the development of deep vein thromboses (DVT), leg edema, muscular atrophy and ankle joint stiffness in postoperative orthopedic patients. An efficient and simple driving mechanism is provided from imparting an alternating and reciprocating movement of a pair of foot paddles. The foot paddles are coupled to the driving mechanism such that only the patient's ankles will be flexed while the knee and hip remains stationary. This device is ideally suited for patients with hip fractures, and hip replacement with prosthesis. The speed of paddle reciprocation can be selected, as can the arcuate path of travel of the foot paddles by adjusting the length of a driving rod.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: November 21, 1995
    Assignee: Prevent Products Inc.
    Inventors: Mario C. Garcia, Kristofer T. Lund, William H. Park