Patents by Inventor William L. Witzig

William L. Witzig 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).

  • Methods for reducing fouling deposit formation in jet engines
    Patent number: 5725611
    Abstract: Methods are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of polyalkenylthiophosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthiophosphonic acid.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: March 10, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Bruce E. Wright, William L. Witzig
  • Selective oxidation of hydrogen sulfide in molten sulfur
    Patent number: 5686057
    Abstract: A method for inhibiting hydrogen sulfite evolution from molten sulfur is disclosed. The method involves adding a hypohalide to molten sulfur containing hydrogen sulfite. The hypohalide, such as hypochlorite, hyprobromite, and their sodium or calcium salts inhibit the evolution of hydrogen sulfite from molten sulfur.
    Type: Grant
    Filed: November 13, 1996
    Date of Patent: November 11, 1997
    Assignee: BetzDearborn Inc.
    Inventors: William L. Witzig, Scott E. Lehrer
  • Methods for reducing fouling deposit formation in jet engines
    Patent number: 5621154
    Abstract: Methods are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of polyalkenylthiophosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthio-phosphonic acid.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: April 15, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Bruce E. Wright, William L. Witzig
  • Methods and compositions for reducing fouling deposit formation in jet engines
    Patent number: 5596130
    Abstract: Methods and compositions are provided for cleaning and inhibiting the formation of fouling deposits on jet engine components during the combustion of turbine combustion fuel oils. Methods and compositions are also provided for inhibiting the formation and emission of soot and smoke from jet engine exhaust during turbine combustion fuel oil combustion. The methods employ a derivative of (thio)phosphonic acid added to the turbine combustion fuel oil. The preferred derivative is pentaerythritol ester of polyisobutenylthiophosphonic acid.
    Type: Grant
    Filed: October 25, 1995
    Date of Patent: January 21, 1997
    Assignee: Betz Laboratories, Inc.
    Inventors: Bruce E. Wright, William L. Witzig, Alan E. Goliaszewski, William S. Carey, Jeffrey H. Peltier