Patents by Inventor Geoffrey H. Humberstone

Geoffrey H. Humberstone 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: 5328585
    Abstract: A linear planar-magnetron sputtering cathode comprises a cathode body (22) including two side-walls (104) two end-walls (106) and a target-supporting member (102) attached to the walls. The cathode body encloses a magnet array (40) which may be moved reciprocally in at least one direction relative to the cathode body. A cooling fluid may be flowed through the target supporting member for cooling the target. A cooling fluid may also be flowed through the side-walls and the end-walls for cooling the end walls. A cooled enclosure is thus be provided for the magnet-array.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: July 12, 1994
    Assignee: Photran Corporation
    Inventors: David E. Stevenson, Geoffrey H. Humberstone
  • Patent number: 5200049
    Abstract: An apparatus for rotatably mounting a cylindrical magnetron in a vacuum chamber. The apparatus includes a bearing housing having one end extending into the vacuum chamber with the other end located outside the chamber. A drive shaft is rotatably mounted in the bearing housing. Each end of the drive shaft extends beyond the housing. The cylindrical magnetron is attached to the end of the drive shaft inside the chamber. A vacuum seal is located in the bearing housing for sealing the drive shaft to the housing. The drive shaft is mounted in the housing such that the load of the magnetron is not transferred to the vacuum seal.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: April 6, 1993
    Assignee: Viratec Thin Films, Inc.
    Inventors: David E. Stevenson, Erik J. Bjornard, Geoffrey H. Humberstone