Patents by Inventor Don L. Shull

Don L. Shull 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).

  • Method and apparatus for continuously monitoring the presence of oil in water
    Patent number: 4045671
    Abstract: A sensitive arrangement for determining presence of oil, at low parts per million, in water. It employs infrared absorbtion measurement, and first mixes the water with an oil solvent that may be separated from the water after taking any oil into solution. Also, the solvent is one which does not have any significant infrared absorbency at a predetermined wave length, which does have absorbency by hydrocarbons. After separation of the oil solvent, it is continuously passed through an absorption cell in an infrared spectrometer, to monitor the presence of oil in the water.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: August 30, 1977
    Assignee: Texaco Inc.
    Inventors: Roger M. Dille, Merle H. Van Stavern, Don L. Shull, David F. Gripshover