Patents by Inventor Michel P. Drouin

Michel P. Drouin 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).

  • Methods for making exploded bark products
    Patent number: 5135612
    Abstract: A method for making a shaped product comprising exploded bark. Preferably the shaped product comprises exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, based upon the dry weight basis of the bark. One of the methods to make the shaped product comprises exploding softwood bark to obtain exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, compressing that exploded bark into a shaped product, while removing in part water, and drying the shaped product to remove the remaining water.
    Type: Grant
    Filed: March 11, 1991
    Date of Patent: August 4, 1992
    Assignee: Domtar Inc.
    Inventors: Michel J. Desrochers, Michel Jean, Michel P. Drouin
  • Process for recycling as a whole asphalt containing waste products
    Patent number: 5098025
    Abstract: A process for recycling an asphalt-containing waste product, that comprises breaking up an asphalt-containing waste product in a liquid to produce a wet waste product mixture having particles no greater in size than 10 mesh and at least some of which are asphalt-containing particles. Thereafter the wet waste product mixture is directly used to produce a new asphalt product. New asphalt products are produced entirely or partly from the wet waste product mixture.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: March 24, 1992
    Assignee: Northern Globe Building Materials, Inc.
    Inventors: Michel P. Drouin, Khalid S. Jasim, Robert J. Booth, Bertram E. Barnswell
  • Exploded bark products
    Patent number: 5021122
    Abstract: A shaped product comprising exploded bark. Preferably the shaped product comprises exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, based upon the dry weight basis of the bark. One of the methods to make the shaped product comprises exploding softwood bark to obtain exploded softwood bark having at least 23% cellulose and at least 18% lignin and polyphenols content, compressing that exploded bark into a shaped product, while removing in part water, and drying the shaped product to remove the remaining water.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: June 4, 1991
    Assignee: Domtar Inc.
    Inventors: Michel J. Desrochers, Michel Jean, Michel P. Drouin