Patents by Inventor Richard S. DeMars

Richard S. DeMars 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).

  • Ball grid array resistor terminator network
    Patent number: 6246312
    Abstract: A resistor network for terminating active electronic circuits such as stub series terminated logic and emitter coupled logic circuits. The network has a substrate with top and bottom surfaces and a common via extending through the substrate. Several resistor pairs are located on the first surface surrounding the common via. Each resistor pair has first and second vias. Resistors are connected between the first and second vias. Several solder spheres are located on the bottom surface. Each of the solder spheres are electrically connected to one of the first, second or common vias.
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: June 12, 2001
    Assignee: CTS Corporation
    Inventors: David L. Poole, Robert L. Reinhard, Richard O. Cooper, Richard S. DeMars