Patents by Inventor Andre G. Loyvet

Andre G. Loyvet 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).

  • Fire-retardant treatment composition
    Patent number: 4461720
    Abstract: A composition for treating wood to impart fire retardance prepared by converting dicyandiamide to an aqueous guanyl urea solution, methylolating the guanyl urea and introducing phosphoric acid to produce a phosphate salt of the methylolated guanyl urea.
    Type: Grant
    Filed: May 24, 1982
    Date of Patent: July 24, 1984
    Assignee: Hoover Treated Wood Products, Inc.
    Inventors: Andre G. Loyvet, Dennis J. Morgan