Patents by Inventor Stephen L. Tvedten

Stephen L. Tvedten 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).

  • Biological pesticide
    Patent number: 7393528
    Abstract: Methods for exterminating pests using compositions comprising at least one protease enzyme. A detergent component may also be utilized in such compositions.
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: July 1, 2008
    Inventor: Stephen L. Tvedten
  • Biological pesticide
    Publication number: 20040091514
    Abstract: Methods for exterminating pests using compositions comprising at least one protease enzyme. A detergent component may also be utilized in such compositions.
    Type: Application
    Filed: October 16, 2003
    Publication date: May 13, 2004
    Inventor: Stephen L. Tvedten
  • Biological pesticide
    Patent number: 6663860
    Abstract: Methods for exterminating pests using compositions comprising at least one protease enzyme. A detergent component may also be utilized in such compositions.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: December 16, 2003
    Inventor: Stephen L. Tvedten