Patents by Inventor Pierre Maronne

Pierre Maronne 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).

  • Vibrating needle viscosity meter
    Patent number: 4558588
    Abstract: A viscosity meter comprises a straight metal rod having an end portion immersed in a fluid whose viscosity is determined. An intermediate portion of the rod is secured against movement and the other end portion is driven into transversal flexure oscillation by a coil. The coil is fed with an A.C. current at the natural frequency of the rod and the magnitude of the oscillation is measured.
    Type: Grant
    Filed: April 9, 1984
    Date of Patent: December 17, 1985
    Assignee: Societe Francaise de Services S.A.
    Inventors: Paul Beaudoin, Pierre Maronne