Patents by Inventor David P. Wallace, II

David P. Wallace, II 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).

  • Sensor isolation plane for planer elements
    Patent number: 8053706
    Abstract: Elimination of sodium contamination at the negative terminal of an electrical stri resistance heater (1, FIGS. 2 and 4) for a gas sensor (3) can be accomplished by providing a grounding plane (-18?) electrically connected to system ground and located between the heater (1) and the sensor (3).
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: November 8, 2011
    Assignee: Delphi Technologies, Inc.
    Inventors: James A. Katterman, David P. Wallace, II, David P. Wallace, legal representative, Linda L. Wallace, legal representative
  • Sensor isolation plane for planer elements
    Publication number: 20090255916
    Abstract: Elimination of sodium contamination at the negative terminal of an electrical stri resistance heater (1, FIGS. 2 and 4) for a gas sensor (3) can be accomplished by providing a grounding plane (-18?) electrically connected to system ground and located between the heater (1) and the sensor (3).
    Type: Application
    Filed: July 28, 2006
    Publication date: October 15, 2009
    Inventors: James A. Katterman, David P. Wallace, II, David P. Wallace, SR., Linda L. Wallace