Patents by Inventor Dionisio Guerrero Cuisia

Dionisio Guerrero Cuisia 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).

  • Method of inhibiting scale
    Patent number: 4048066
    Abstract: The invention disclosed relates to a method for using a new improved composition for inhibiting or preventing accumulation of scale or the like on heating surfaces in an aqueous system. The present composition includes (A) copolymers of styrene sulfonic acid with acrylic or methacrylic acid, and their water-soluble salts; or (B) mixture of polystyrene sulfonic acid with polyacrylic or polymethacrylic acid, and their water-soluble salts.
    Type: Grant
    Filed: November 17, 1976
    Date of Patent: September 13, 1977
    Assignee: Chemed Corporation
    Inventors: Dionisio Guerrero Cuisia, Chih Ming Hwa
  • Method and composition of inhibiting scale
    Patent number: 3959167
    Abstract: The invention disclosed relates to a method for using a new improved composition for inhibiting or preventing accumulation of scale or the like on heating surfaces in an aqueous system. The present composition includes an acrylic polymer, a water-soluble chelant, and an organophosphonic acid and/or their water-soluble salts. In a preferred embodiment, the composition is composed of sodium polymethylacrylate, nitrilotriacetic acid and hydroxyethylidene diphosphonic acid as its water-soluble salts.
    Type: Grant
    Filed: December 10, 1973
    Date of Patent: May 25, 1976
    Assignee: Chemed Corporation
    Inventors: Chih Ming Hwa, Dionisio Guerrero Cuisia, Murrell Leon Salutsky