Patents by Inventor Finn Hallstein Fadnes

Finn Hallstein Fadnes 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 for the measurement of precipitation of asphaltene in oil
    Patent number: 5420040
    Abstract: The invention provides a method and an apparatus for measuring asphaltene precipitation in a petroleum product. The inventive method quantifies the precipitation by measuring changes in the petroleum product's conductivity or capacitance. The inventive apparatus comprises a measuring cell adapted to be filled with a petroleum product or a solution of the product and a flocculant, together with an instrument electrically coupled to the measuring cell for measuring the product's or solution's conductivity or capacitance.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: May 30, 1995
    Assignee: Norsk Hydro a.s.
    Inventors: Hilde Anfindsen, Finn Hallstein Fadnes, Per Fotland