Patents by Inventor Celeste Hort

Celeste Hort 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).

  • Catalytic sensor
    Patent number: 6911180
    Abstract: A combustible gas sensor includes an active element in electrical connection with a measurement circuit. The measurement circuit includes a thermistor network to compensate for the effect of changes in ambient temperature to the resistance of the active element. Another combustible gas sensor includes an active element having a geometric surface area no greater than approximately 0.5 mm2 in electrical connection with a measurement circuit. The measurement circuit includes a compensator that compensates for the effect of changes in ambient temperature to the resistance of the active element without compensating for heat lost by thermal conduction from the active element.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: June 28, 2005
    Assignee: Mine Safety Appliances Company
    Inventors: James B. Miller, Celeste Hort, Towner B. Scheffler
  • Catalytic sensor
    Publication number: 20040241870
    Abstract: A combustible gas sensor includes an active element in electrical connection with a measurement circuit. The measurement circuit includes a thermistor network to compensate for the effect of changes in ambient temperature to the resistance of the active element. Another combustible gas sensor includes an active element having a geometric surface area no greater than approximately 0.5 mm2 in electrical connection with a measurement circuit. The measurement circuit includes a compensator that compensates for the effect of changes in ambient temperature to the resistance of the active element without compensating for heat lost by thermal conduction from the active element.
    Type: Application
    Filed: October 22, 2003
    Publication date: December 2, 2004
    Inventors: James B. Miller, Celeste Hort, Towner B. Scheffler
  • Catalytic sensor
    Patent number: 6663834
    Abstract: A combustible gas sensor includes an active element in electrical connection with a measurement circuit. The measurement circuit includes a thermistor network to compensate for the effect of changes in ambient temperature to the resistance of the active element. Another combustible gas sensor includes an active element having a geometric surface area no greater than approximately 0.5 mm2 in electrical connection with a measurement circuit. The measurement circuit includes a compensator that compensates for the effect of changes in ambient temperature to the resistance of the active element without compensating for heat lost by thermal conduction from the active element.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: December 16, 2003
    Assignee: Mine Safety Appliance Company
    Inventors: James B. Miller, Celeste Hort, Towner B. Scheffler