Patents Assigned to Coral International, Inc.
  • Coating composition and method for the treatment of formed metal surfaces
    Patent number: 5332452
    Abstract: An aqueous, acidic composition for application to aluminum and aluminum alloy surfaces comprising a source of zirconium ions, a source of fluoride ions, a source of phosphate ions, a phosphate acid ester, a polyethylene glycol ester of a fatty acid, and nitric acid, and a method for treating aluminum and aluminum alloy surfaces with such a composition.
    Type: Grant
    Filed: May 28, 1992
    Date of Patent: July 26, 1994
    Assignee: Coral International, Inc.
    Inventor: Narayan Das
  • Rinse aid for metal surfaces
    Patent number: 5279677
    Abstract: An aqueous composition for treating metal surfaces, particularly formed aluminum and aluminum alloy surfaces, comprising a surface tension reducing agent selected from the group consisting of sulfosuccinate salts and derivatives and mixtures thereof, a surfactant selected from the group consisting of propoxylated and ethoxylated linear alcohols, and an acid such as phosphoric acid, as well as preferably a bactericide and a defoamant, and a method for treating metal surfaces, particularly beverage containers, such as of aluminum and aluminum alloy with such a composition.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: January 18, 1994
    Assignee: Coral International, Inc.
    Inventor: Narayan Das
  • Coating composition and method for the treatment of formed metal surfaces
    Patent number: 5139586
    Abstract: An aqueous, acidic composition for application to aluminum and aluminum alloy surfaces comprising a source of zirconium ions, a source of fluoride ions, a source of phosphate ions, a phosphate acid ester, a polyethylene glycol ester of a fatty acid, and nitric acid, and a method for treating aluminum and aluminum alloy surfaces with such a composition.
    Type: Grant
    Filed: February 11, 1991
    Date of Patent: August 18, 1992
    Assignee: Coral International, Inc.
    Inventor: Narayan Das
  • Method and composition for water treatment
    Patent number: 5071569
    Abstract: A method is disclosed for decolorizing a water body particularly for clarifying the water and removing algae stains in a swimming pool, by establishing in the water body EDTA compound and ammonium ions by the addition of appropriate compounds, and a composition for decolorizing such a water body containing EDTA compound and ammonium salt.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: December 10, 1991
    Assignee: Coral International, Inc.
    Inventors: Paul R. Caulfield, James R. Schueneman