Patents by Inventor Jean-Pierre Francois Hulin

Jean-Pierre Francois Hulin 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).

  • Device and method for measuring the viscosity of a fluid
    Patent number: 8844339
    Abstract: The invention relates to a method for measuring the viscosity of a fluid, said method comprising the following steps: (a) providing a flow of said fluid in a laminar state inside a channel (14, 24) having a characteristic transverse dimension D, and in which an elongate member (12, 22) having a characteristic dimension d is placed substantially along the longitudinal direction of said channel and substantially at the center of the channel, and has a portion of the length l thereof submerged in said channel; (b) measuring the friction force (f) applied by said fluid on the walls of the elongate member; and (c) calculating the dynamic viscosity (?) of said fluid based on the equation (1) f=??lU where U is the average flow rate and ? is a geometric factor.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: September 30, 2014
    Assignee: Centre National de la Recherche Scientifique
    Inventors: Harold Roland Bernard Auradou, Jean-Pierre François Hulin, Benoît Bernard Joseph Semin
  • DEVICE AND METHOD FOR MEASURING THE VISCOSITY OF A FLUID
    Publication number: 20110239744
    Abstract: The invention relates to a method for measuring the viscosity of a fluid, said method comprising the following steps: (a) providing a flow of said fluid in a laminar state inside a channel (14, 24) having a characteristic transverse dimension D, and in which an elongate member (12, 22) having a characteristic dimension d is placed substantially along the longitudinal direction of said channel and substantially at the centre of the channel, and has a portion of the length l thereof submerged in said channel; (b) measuring the friction force (f) applied by said fluid on the walls of the elongate member; and (c) calculating the dynamic viscosity (?) of said fluid based on the equation (1) f=??lU where U is the average flow rate and ? is a geometric factor.
    Type: Application
    Filed: October 15, 2009
    Publication date: October 6, 2011
    Inventors: Harold Roland Bernard Auradou, Jean-Pierre Francois Hulin, Benoît Bernard Joseph Semin