Patents by Inventor Walter Hempfling

Walter Hempfling 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).

  • Sodium chlorine spray treatment of the leaves present on tobacco plants to significantly reduce TSNAs in cured tobacco produced therefrom
    Patent number: 8905041
    Abstract: Methods for increasing the concentration of antioxidants during senescence and curing of tobacco leaves include application of a chemical solution. The methods include spraying the solution onto the tobacco plant prior to harvest and/or applying the chemical solution to the soil surrounding roots of growing tobacco plants. The application of the chemical solution preferably occurs between topping and harvest, and is optimized to simulate the production of antioxidants and interfere with the formation of TSNAs during curing. The tobacco can be burley tobacco subjected to air curing.
    Type: Grant
    Filed: January 15, 2013
    Date of Patent: December 9, 2014
    Assignee: Philip Morris USA Inc.
    Inventors: Qinglin Li, Walter Hempfling, Marc Robert Krauss
  • Sodium chloride spray treatment of soil surrounding tobacco plants to reduce TSNAs
    Patent number: 8353300
    Abstract: Methods for increasing the concentration of antioxidants during senescence and curing of tobacco leaves include application of a chemical solution. The methods include spraying the solution onto the tobacco plant prior to harvest and/or applying the chemical solution to the soil surrounding roots of growing tobacco plants. The application of the chemical solution preferably occurs between topping and harvest, and is optimized to stimulate the production of antioxidants and interfere with the formation of TSNAs during curing. The tobacco can be burley tobacco subjected to air curing.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: January 15, 2013
    Assignee: Philip Morris USA Inc.
    Inventors: Qinglin Li, Walter Hempfling, Marc Robert Krauss
  • Method for reduction of tobacco specific nitrosamines
    Publication number: 20050121046
    Abstract: Tobacco is treated before or during curing to lower or eliminate bacterial populations and/or activity, fungal growth, and/or tobacco-specific nitrosamine or bacterial endotoxin levels in the cured tobacco, wherein the tobacco is treated with an effective amount of a wash solution. Air-cured tobacco may be cured in four weeks or less when treated with a wash solution of bicarbonate salts.
    Type: Application
    Filed: May 12, 2004
    Publication date: June 9, 2005
    Inventors: Walter Hempfling, Gordon Bokelman, Maria Shulleeta
  • Spray and/or soil treatment of tobacco to reduce TSNAs
    Publication number: 20050034365
    Abstract: Methods for increasing the concentration of antioxidants during senescence and curing of tobacco leaves include application of a chemical solution. The methods include spraying the solution onto the tobacco plant prior to harvest and/or applying the chemical solution to the soil surrounding roots of growing tobacco plants. The application of the chemical solution preferably occurs between topping and harvest, and is optimized to stimulate the production of antioxidants and interfere with the formation of TSNAs during curing. The tobacco can be burley tobacco subjected to air curing.
    Type: Application
    Filed: January 30, 2004
    Publication date: February 17, 2005
    Inventors: Qinglin Li, Walter Hempfling, Marc Krauss