Patents by Inventor Christopher J. Whevell

Christopher J. Whevell 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).

  • Resistive metal layers and method for making same
    Patent number: 5243320
    Abstract: Electrodeposited planar resistive layers are disclosed, which may be combined with conductive layers and insulative layers to produce laminates useful in the preparation of printed circuit boards. The resistive layers are prepared by electroplating from an electroplating bath containing a source of a normally conductive metal component and a source of a non-metallic resistance increasing additive. Planar resistors may be produced which have sheet resistances in the range of from about 15 to about 1000 .OMEGA. per square.
    Type: Grant
    Filed: August 26, 1991
    Date of Patent: September 7, 1993
    Assignee: Gould Inc.
    Inventors: Sidney J. Clouser, Chinho Lee, Mary K. Prokop, Christopher J. Whevell