Patents by Inventor Walter J. Edmonds

Walter J. Edmonds 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).

  • Extended life source arc chamber liners
    Patent number: 6583427
    Abstract: A liner (102) for an arc chamber (100) of an ion implanter. The arc chamber (100) comprises a liner (102) on the inner surface (104) of the arc chamber (100) that extends the life of the arc chamber (100). The liner (102) comprises a one piece portion (102a) that covers the bottom and long sidewalls of the arc chamber (100) and two end plates (102b) for covering the end walls of the arc chamber (100). When the liner (102) wears out it is replaced at a significantly reduced cost compared to replacing the entire arc chamber (100).
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: June 24, 2003
    Assignee: Texas Instruments Incorporated
    Inventors: Walter J. Edmonds, Timothy B. Vaughn
  • High current nova dual slit electrode enchancement
    Patent number: 5959396
    Abstract: A suppression electrode assembly (18) comprises an electrode suppression plate (40) constructed of a material having substantial strength and durability and has an aperture seat (76) with an opening (72) defined therein. An aperture insert (80) constructed from graphite is slidably engageable with the aperture seat (76). The aperture insert (80) defines an elongated slit (84) which is in general alignment with the aperture seat opening (72) when the aperture insert (80) is installed in the seat (76).
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: September 28, 1999
    Assignee: Texas Instruments Incorporated
    Inventors: Wylie K. Moreshead, Walter J. Edmonds