Patents by Inventor Walter F. Lorenc

Walter F. Lorenc 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).

  • Boiler water treating compositions
    Patent number: 4545920
    Abstract: A blend of polymers is disclosed which, when used as described, prevents and removes scale on heat transfer surfaces in contact with boiler waters.
    Type: Grant
    Filed: February 3, 1984
    Date of Patent: October 8, 1985
    Assignee: Nalco Chemical Company
    Inventors: Walter F. Lorenc, John A. Kelly, Frederick S. Mandel
  • Carboxylate polymers for internal scale control agents in boiler systems
    Patent number: 4457847
    Abstract: A method of treating hardness present in boiler waters which are in contact with heat transfer surfaces to prevent and remove scale caused by such hardness which comprises treating such waters with a water-soluble anionic vinyl polymer containing at least 30% by weight of carboxylate functionality with said polymer having a molecular weight within the range of 500-50,000 and with the amount of such polymer being within the range of 1-30 ppm per ppm hardness present in such waters.In a preferred embodiment, the boiler waters are simultaneously treated with the water-soluble anionic vinyl polymers containing carboxylate functionality and another water-soluble anionic vinyl polymer which has dispersing properties.
    Type: Grant
    Filed: May 28, 1982
    Date of Patent: July 3, 1984
    Assignee: Nalco Chemical Company
    Inventors: Walter F. Lorenc, John A. Kelly, Frederick S. Mandel
  • Boiler treatment using amines and organophosphonate materials
    Patent number: 4011171
    Abstract: A method of inhibiting the precipitation of scale deposits in water systems using a scale preventive composition which consists of a combination of an organophosphonate material and an amine selected from the group consisting of dihydroxyethylethylenediamine, trihydroxyethylethylenediamine, tetrahydroxyethylethylenediamine, and aminoethylethanolamine and combinations thereof. The combination of the organophosphonate material and the amine provides a synergistic effect in the prevention of scale deposits in water systems.
    Type: Grant
    Filed: January 29, 1976
    Date of Patent: March 8, 1977
    Assignee: Nalco Chemical Company
    Inventors: Walter F. Lorenc, Dean H. Joneson