Patents by Inventor Leslie J. Owen

Leslie J. Owen 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).

  • Gas monitors
    Patent number: 4185491
    Abstract: A gas sensor incorporating a sensor element of the heated semi-conductor type has a heater for the element connectible to a variable power source, the output of which is responsive to the concentration of gas under test.
    Type: Grant
    Filed: December 12, 1977
    Date of Patent: January 29, 1980
    Assignee: British Steel Corporation
    Inventor: Leslie J. Owen
  • Gas monitors
    Patent number: 4175422
    Abstract: A gas sensor having a sensitive element of semi conductor type, the sensor being contained within an enclosure adapted to permit gas to come into contact with the element and incorporating means for maintaining adjacent the element, a substantially constant relative humidity.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: November 27, 1979
    Assignee: British Steel Corporation
    Inventor: Leslie J. Owen