Patents by Inventor Michael V. Verrells

Michael V. Verrells 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).

  • Liquid quality monitor having a plurality of photodiodes for detecting light scattered at various angles
    Patent number: 4672216
    Abstract: A power station boiler condensate water monitor employs a light-scatter cell for the detection of oil and/or particulates in the water. In order to determine background scatter levels, provision is made to alternatively pass clean water through the cell (FLUSH). The offset voltages obtained from the detector outputs when clean water is employed are compensated for differences in temperature between the boiler condensate water and the clean water before substraction from the detector outputs when boiler condensate water is employed. The monitor is capable of detecting oil levels of less than 2 parts per million.
    Type: Grant
    Filed: October 22, 1985
    Date of Patent: June 9, 1987
    Assignee: International Standard Electric Corporation
    Inventors: Gilles D. Pitt, Brian J. Scott, Michael V. Verrells, Nicholas K. Hancock, Phillip Extance