Patents by Inventor Robert C. Mavis

Robert C. Mavis 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).

  • Reaction products of a hydrolyzed styrene-maleic anhydride copolymer and a dispersed high amylopectin starch product neutralized with a volatile alkali, method of making same, and coating compositions comprising same
    Patent number: 4243564
    Abstract: The volatile alkali salt of the reaction product of a waxy starch product having a high amylopectin content and styrene-maleic anhydride copolymer and the method of making such product comprising hydrolyzing the copolymer in the presence of the high amylopectin starch product at an elevated temperature and in the presence of water for a time sufficient to hydrolyze the copolymer, disperse the starch in water, and permit the copolymer and starch to react, adding a volatile alkali to the heated mixture, and continuing the heating for a time sufficient to form the volatile alkali salt of said reaction product. The invention also comprises coatings comprising the volatile alkali salt of said reaction product.
    Type: Grant
    Filed: May 18, 1979
    Date of Patent: January 6, 1981
    Assignees: Moses Konigsberg, Henry A. Fremont, G. Howard Kingsley
    Inventor: Robert C. Mavis