Patents by Inventor Marcel Cossette

Marcel Cossette 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).

  • Process for phosphating asbestos fibers
    Patent number: 4495223
    Abstract: There is disclosed an improved process for phosphating asbestos fibers by reacting phosphorus chlorides with asbestos fibers in a first reaction vessel heated to a temperature within the range of the boiling temperature of the selected phosphorus chloride at atmospheric pressure and 200.degree. C. above the boiling temperature of said phosphorus chloride, then the phosphated asbestos fibers are cured in a second chamber and purged of any volatile by-product formed during the phosphating step. The products obtained possess reduced haemolytic activity.
    Type: Grant
    Filed: February 22, 1984
    Date of Patent: January 22, 1985
    Assignee: Societe Nationale de L'Amiante
    Inventors: Jean-Marc Lalancette, Marcel Cossette, Pierre Delvaux