Patents by Inventor Allan J. Perkins

Allan J. Perkins 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).

  • Electrical resistance temperature compensated corrosion probe with independent temperature measurement
    Patent number: 5243297
    Abstract: An electrical resistance corrosion probe incorporates a temperature sensitive resistor (RTD) that directly measures temperature of the probe and therefore of its environment as corrosion measurements are being made. The temperature sensitive resistor has one end connected to the common junction between the test and reference elements of the corrosion probe and has its other end connected in the common line to the several corrosion measuring circuits, including the test, reference and check circuits.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: September 7, 1993
    Assignee: Rohrback Cosasco Systems, Inc.
    Inventors: Allan J. Perkins, David K. Waterman, Albert L. Cheser