Patents by Inventor Dean Walters

Dean Walters 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).

  • Electron beam inspection system and method
    Patent number: 5502306
    Abstract: There is disclosed numerous embodiments of a method and apparatus for a particle scanning system and an automatic inspection system. In each of these a particle beam is directed at the surface of a substrate for scanning that substrate. Also included are a selection of detectors to detect at least one of the secondary particles, back-scattered particles and transmitted particles from the substrate. The substrate is mounted on an x-y stage to provide it with at least one degree of freedom while the substrate is being scanned by the/particle beam. The substrate is also subjected to an electric field on it's surface to accelerate the secondary particles. The system also has the capability to accurately measure the position of the substrate with respect to the charged particle beam. Additionally, there is an optical alignment means for initially aligning the substrate beneath the,particle beam means.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: March 26, 1996
    Assignee: KLA Instruments Corporation
    Inventors: Dan Meisburger, Alan D. Brodie, Curt Chadwick, Anil Desai, Hans Dohse, Dennis Emge, John Greene, Ralph Johnson, Ming-Yie Ling, John McMurtry, Barry Becker, Ray Paul, Mike Robinson, Richard Simmons, David E. A. Smith, John Taylor, Lee Veneklasen, Dean Walters, Paul Wieczorek, Sam Wong, April Dutta, Surendra Lele, Kirkwood Rough, Henry Pearce-Percy, Jack Y. Jau, Chun C. Lin, Hoi T. Nguyen, Yen-Jen Oyang, Timothy L. Hutcheson, David J. Clark, Chung-Shih Pan, Chetana Bhaskar, Chris Kirk, Eric Munro
  • Sewed seam ripper
    Patent number: 4175498
    Abstract: An apparatus for cutting sewed seams for use in combination with a home-type sewing machine is disclosed. The unit is lightweight, low cost and may be manufactured to fit any brand of sewing machine.
    Type: Grant
    Filed: February 1, 1978
    Date of Patent: November 27, 1979
    Inventor: Dean Walters
  • Body cushion-receiving seating structure
    Patent number: 3999801
    Abstract: A seating structure removably receives a typically amorphous styrofoam pellet-filled body cushion. The seating structure includes a shell for holding the cushion and a pedestal for supporting the shell on a floor surface. In the preferred embodiment the shell has a bottom portion, rear support, side and front portions integral with, and extending generally upward from, said bottom to define a contoured and shaped cushion-receiving cavity. The shell is generally concavo-convex in shape with the pedestal attached to the convex underside of the shell. The pedestal is additionally adapted to removably receive casters or detachable base supports.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: December 28, 1976
    Inventor: James Dean Walters