Patents by Inventor Michel Azemar

Michel Azemar 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).

  • Patent number: 4109069
    Abstract: A horizontal autoclave for the bulk preparation of polymers and copolymers on a basis of vinyl chloride. It is equipped with a stirrer system of the frame type comprising one or more coaxial frames. The axis of the frames in eccentric with respect to the axis of the autoclave and the periphery of the active portion of the frames forming blades passes in the vicinity of the wall of the autoclave substantially along its lower generatrix.
    Type: Grant
    Filed: March 11, 1977
    Date of Patent: August 22, 1978
    Assignee: Rhone-Poulenc Industries
    Inventors: Michel Azemar, Lucien Vigliecca
  • Patent number: 4045185
    Abstract: An autoclave for the bulk polymerization of vinyl chloride polymers and copolymers comprising a vessel having one or more agitators in the form of a shaft mounted for rotational movement about a vertical axis and having a helicoidal ribbon, the upper and lower surfaces S.sub.1 S.sub.2 of which are generated by displacement of a straight segment of a line of substantially constant length, when one of the ends describes a helix on a cylinder which forms a surface of the rotatable shaft, said segments being situated during their displacment in planes tangential to said cylinder and forming respectively with the planes perpendicular to the axis of the rotatable shaft, constant angles .phi..sub.1 and .phi..sub.2.
    Type: Grant
    Filed: October 20, 1976
    Date of Patent: August 30, 1977
    Assignee: Rhone-Poulenc Industries
    Inventors: Michel Azemar, Lucien Vigliecca