Patents by Inventor Harold D. Perry

Harold D. Perry 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: 6773571
    Abstract: The present invention pertains to methods and apparatus for electroplating a substantially uniform layer of a metal onto a work piece having a seed layer thereon. The total current of a plating cell is distributed among a plurality of anodes in the plating cell in order to tailor the current distribution in the plating electrolyte to compensate for resistance and voltage variation across a work piece due to the seed layer. Focusing elements are used to create “virtual anodes” in proximity to the plating surface of the work piece to further control the current distribution in the electrolyte during plating.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: August 10, 2004
    Assignee: Novellus Systems, Inc.
    Inventors: Steven T. Mayer, Evan E. Patton, Brian Paul Blackman, Jonathan D. Reid, Thomas Anand Ponnuswamy, Harold D. Perry
  • Patent number: 5537299
    Abstract: A multiple light system is provided for watercraft and the like which combines navigation light and docking light capabilities. A navigation light is mounted on top of a mast which protrudes from the watercraft deck. An auxiliary light, which can comprise a docking light, is mounted on the mast by a mounting assembly. The auxiliary light draws electrical power from a bulb of the navigation light and can be independently disabled by means of a switch on the mounting bracket.
    Type: Grant
    Filed: March 13, 1995
    Date of Patent: July 16, 1996
    Assignee: Peter Anton
    Inventor: Harold D. Perry
  • Patent number: D334487
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: April 6, 1993
    Inventor: Harold D. Perry
  • Patent number: D363438
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: October 24, 1995
    Inventor: Harold D. Perry