Patents by Inventor Marcel Chretien

Marcel Chretien 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).

  • Cooled fluidization grid
    Patent number: 5009852
    Abstract: The fluidizing grid of the invention is essentially constituted by pipes (18) forming the diverging walls of the openings (17) through which the fluidizing air is blown. These pipes have a cooling liquid (water) flowing therealong, which water then flows through the heat exchange tubes of the boiler.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: April 23, 1991
    Assignee: Charbonnages de France
    Inventors: Jean-Claude Kita, Roger M. Puff, Alexandre Petrovic, Marcel Chretien
  • Multifuel heat generator with integrated circulating bed
    Patent number: 4936230
    Abstract: Heat generator comprising a combustion chamber, a circulating bed and a recovery boiler. The circulating bed and the combustion chamber have a common wall. The present invention may be used to achieve the combustion of high sulphur content fuels.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: June 26, 1990
    Assignee: Institut Francais du Petrole
    Inventors: Alain Feugier, Edmond Perthuis, Marcel Chretien, Alexandre Petrovic