Patents by Inventor Ronald A. Wilson

Ronald A. Wilson 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 sensitive devices
    Patent number: 3932807
    Abstract: In a system for detecting a gas or vapour by virtue of its effect on the electrical conductivity of a semiconducting material which is maintained at a suitable operating temperature by an electric resistance heater, the heater has an appreciable temperature coefficient of resistance and is connected in a bridge circuit, the current supplied to the bridge being automatically controlled in response to variations of its out-of-balance voltage so as to maintain constancy of the resistance of the heater and hence of the operating temperature.
    Type: Grant
    Filed: March 29, 1974
    Date of Patent: January 13, 1976
    Assignee: National Research Development Corporation
    Inventor: Ronald Wilson