Patents by Inventor Cynthia L. McDonald

Cynthia L. McDonald 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).

  • Probe station with low noise characteristics
    Patent number: 7550984
    Abstract: A cable includes an inner conductor, an inner dielectric, and a guard conductor, where the inner dielectric is between the inner conductor and the guard conductor. The cable also includes an outer dielectric, and a shield conductor, where the outer dielectric is between the guard conductor and the shield conductor. The cable further includes an additional layer of material between the outer dielectric and the shield conductor of suitable composition for reducing triboelectric current generation between the outer dielectric and the shield conductor to less than that which would occur were the outer dielectric and the shield conductor to directly adjoin each other.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: June 23, 2009
    Assignee: Cascade Microtech, Inc.
    Inventors: Timothy Lesher, Brad Miller, Clarence E. Cowan, Michael Simmons, Frank Gray, Cynthia L. McDonald
  • Probe station with low noise characteristics
    Patent number: 7295025
    Abstract: A cable includes an inner conductor, an inner dielectric, and a guard conductor, where the inner dielectric is between the inner conductor and the guard conductor. The cable also includes an outer dielectric, and a shield conductor, where the outer dielectric is between the guard conductor and the shield conductor. The cable further includes an additional layer of material between the outer dielectric and the shield conductor of suitable composition for reducing triboelectric current generation between the outer dielectric and the shield conductor to less than that which would occur were the outer dielectric and the shield conductor to directly adjoin each other.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: November 13, 2007
    Assignee: Cascade Microtech, Inc.
    Inventors: Timothy Lesher, Brad Miller, Clarence E. Cowan, Michael Simmons, Frank Gray, Cynthia L. McDonald
  • Probe station with low noise characteristics
    Patent number: 7138810
    Abstract: A cable includes an inner conductor, an inner dielectric, and a guard conductor, where the inner dielectric is between the inner conductor and the guard conductor. The cable also includes an outer dielectric, and a shield conductor, where the outer dielectric is between the guard conductor and the shield conductor. The cable further includes an additional layer of material between the outer dielectric and the shield conductor of suitable composition for reducing triboelectric current generation between the outer dielectric and the shield conductor to less than that which would occur were the outer dielectric and the shield conductor to directly adjoin each other.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: November 21, 2006
    Assignee: Cascade Microtech, Inc.
    Inventors: Timothy Lesher, Brad Miller, Clarence E. Cowan, Michael Simmons, Frank Gray, Cynthia L. McDonald
  • Probe station with low noise characteristics
    Patent number: 6847219
    Abstract: A cable includes an inner conductor, an inner dielectric, and a guard conductor, where the inner dielectric is between the inner conductor and the guard conductor. The cable also includes an outer dielectric, and a shield conductor, where the outer dielectric is between the guard conductor and the shield conductor. The cable further includes an additional layer of material between the outer dielectric and the shield conductor of suitable composition for reducing triboelectric current generation between the outer dielectric and the shield conductor to less than that which would occur were the outer dielectric and the shield conductor to directly adjoin each other.
    Type: Grant
    Filed: September 18, 2003
    Date of Patent: January 25, 2005
    Assignee: Cascade Microtech, Inc.
    Inventors: Timothy Lesher, Brad Miller, Clarence E. Cowan, Michael Simmons, Frank Gray, Cynthia L. McDonald