Patents by Inventor Jean-Francois Cotro

Jean-Francois Cotro 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).

  • Apparatus for the automatic measurement of the apparent density of the mud in a liquid, system for the automatic measurement of the ponsar index of such a mud using the apparatus and process for measuring said index
    Patent number: 4779462
    Abstract: Apparatus for the automotive measurement of the apparent density of mud or sludge contained in a liquid, and a system for the automatic measurement of the PONSAR index and a process for measuring said index. The apparent density of one liter of clarified liquid is obtained with the aid of electronic means for measuring the immersion difference, in a clarified liquid reservoir, of a bottle successively filled with mud and clarified liquid. Detection means make it possible to measure the mud volume decanted or settled in 1/2 hour in a cylinder filled with one liter of mud-containing liquid and 1.5 liters of clarified liquid. Thus, the calculation of the volume/weight ratio then gives the PANSAR index.
    Type: Grant
    Filed: July 23, 1986
    Date of Patent: October 25, 1988
    Assignee: Commissariat a l'Energie Atomique
    Inventors: Joseph Boullet, Jean-Francois Cotro, Philippe De Jongh, Philippe Hours, Thomas Peaucelle