Patents by Inventor Alastair Kerr Muir

Alastair Kerr Muir 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).

  • Hydrogen sulfide gas detector with humidity and temperature compensation
    Patent number: 10520481
    Abstract: A hydrogen sulfide gas detector is provided. The detector includes a metal oxide semiconductor-based hydrogen sulfide gas sensor having an electrical characteristic that varies with hydrogen sulfide gas concentration. Measurement circuitry is coupled to the metal oxide semiconductor-based hydrogen sulfide gas detector to measure the electrical characteristic. A controller is coupled to the measurement circuitry and is configured to receive an indication of the electrical characteristic of the hydrogen sulfide gas sensor as well as an indication of ambient humidity. The controller is configured to provide a compensated hydrogen sulfide gas concentration output based on the indication of the electrical characteristic of the hydrogen sulfide gas sensor, an indication of ambient temperature, and the indication of ambient humidity.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: December 31, 2019
    Assignee: Rosemount Inc.
    Inventors: Henryk Kozlow, Alastair Kerr Muir, Todd Christopher Phelps, Lucjan Antoni Oleszczuk
  • HYDROGEN SULFIDE GAS DETECTOR WITH HUMIDITY AND TEMPERATURE COMPENSATION
    Publication number: 20140356971
    Abstract: A hydrogen sulfide gas detector is provided. The detector includes a metal oxide semiconductor-based hydrogen sulfide gas sensor having an electrical characteristic that varies with hydrogen sulfide gas concentration. Measurement circuitry is coupled to the metal oxide semiconductor-based hydrogen sulfide gas detector to measure the electrical characteristic. A controller is coupled to the measurement circuitry and is configured to receive an indication of the electrical characteristic of the hydrogen sulfide gas sensor as well as an indication of ambient humidity. The controller is configured to provide a compensated hydrogen sulfide gas concentration output based on the indication of the electrical characteristic of the hydrogen sulfide gas sensor, an indication of ambient temperature, and the indication of ambient humidity.
    Type: Application
    Filed: May 28, 2014
    Publication date: December 4, 2014
    Applicant: Rosemount Analytical Inc.
    Inventors: Henryk Kozlow, Alastair Kerr Muir, Todd Christopher Phelps, Lucjan Antoni Oleszczuk