Patents by Inventor Alan T. Stephens, II

Alan T. Stephens, II 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: 6991450
    Abstract: Honeycomb structures are formed at reduced extrusion pressures and high extrusion rates via extrusion through open cavity honeycomb extrusion dies incorporating large, closely spaced feed channels delivering extrudable material to die honeycomb forming sections incorporating extrudate distribution means in the form of inverted conical or pyramidal flow dividers incorporating inclined flow-guiding surfaces that guide the extrudate into the base ends of plural discharge slot intersections and/or slot segments in direct line with the feed channels.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: January 31, 2006
    Assignee: Corning Incorporated
    Inventor: Alan T. Stephens, II
  • Patent number: 6235164
    Abstract: A sputtering apparatus for depositing a thin film (66) of magnetic material on a substrate (26) is modified to include a plate-shaped electromagnet (34, 44, or 70) for orienting magnetic domains within the film (66). The electromagnet (34, 44, or 70) has conductive windings (38; 46, 48, and 50; or 72) that are arranged for producing a magnetic field (42 or 52) within a plane (60) corresponding to a surface of the substrate (26). Field strength vectors (68) vary in absolute magnitude between points located along a first axis (62), but have substantially uniform components of magnitude at the same points measured in a common direction along the first axis (62).
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: May 22, 2001
    Assignee: CVC Products, Inc.
    Inventors: Kevin S. Gerrish, Paul H. Ballentine, Dorian Heimanson, Alan T. Stephens, II
  • Patent number: 5902466
    Abstract: A sputtering apparatus for depositing a thin film (66) of magnetic material on a substrate (26) is modified to include a plate-shaped electromagnet (34, 44, or 70) for orienting magnetic domains within the film (66). The electromagnet (34, 44, or 70) has conductive windings (38; 46, 48, and 50; or 72) that are arranged for producing a magnetic field (42 or 52) within a plane (60) corresponding to a surface of the substrate (26). Field strength vectors (68) vary in absolute magnitude between points located along a first axis (62), but have substantially uniform components of magnitude at the same points measured in a common direction along the first axis (62).
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: May 11, 1999
    Assignee: CVC Products, Inc.
    Inventors: Kevin S. Gerrish, Paul H. Ballentine, Dorian Heimanson, Alan T. Stephens, II
  • Patent number: 5630916
    Abstract: A sputtering apparatus for depositing a thin film (66) of magnetic material on a substrate (26) is modified to include a plate-shaped electromagnet (34, 44, or 70) for orienting magnetic domains within the film (66). The electromagnet (34, 44, or 70) has conductive windings (38; 46, 48, and 50; or 72) that are arranged for producing a magnetic field (42 or 52) within a plane (60) corresponding to a surface of the substrate (26). Field strength vectors (68) vary in absolute magnitude between points located along a first axis (62), but have substantially uniform components of magnitude at the same points measured in a common direction along the first axis (62).
    Type: Grant
    Filed: January 6, 1995
    Date of Patent: May 20, 1997
    Assignee: CVC Products, Inc.
    Inventors: Kevin S. Gerrish, Paul H. Ballentine, Dorian Heimanson, Alan T. Stephens, II
  • Patent number: 5248402
    Abstract: A sputtering system magnetron formed of an array of permanent magnets rotated in proximity to a plane of a target disposed in a vacuum chamber has an improved shape resembling a cross section of an apple. The magnetic path established between oppositely poled pairs of magnets is inturned in a stem region proximate to the axis of rotation for the array and has a pair of opposed lobes extending outward from the stem region in a generally semi-circular form. The lobes lead to and join each other in an indent region opposite the stem region. The maximum distance across the path between the lobes is about double the minimum distance across the path between the stem region and the indent region.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: September 28, 1993
    Assignee: CVC Products, Inc.
    Inventors: Paul H. Ballentine, Dorian Heimanson, Alan T. Stephens, II