Patents by Inventor Frederick Kehr

Frederick Kehr 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).

  • Mixing impeller and method with pre-shaped tip elements
    Publication number: 20070002687
    Abstract: An impeller blade for a top skin element joined to a bottom skin element. The blade can have an air foil shape. A pre-shaped tip is joined to the radial outside end of the blade.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Bernd Gigas, Frederick Kehr, Thomas Taylor
  • Mixing impeller and method with top and bottom skin elements
    Publication number: 20070002686
    Abstract: An impeller blade for a top skin element joined to a bottom skin element. The blade can have an air foil shape. A pre-shaped tip is joined to the radial outside end of the blade.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Bernd Gigas, Frederick Kehr, Thomas Taylor
  • Mixing impeller and method with weld locations
    Publication number: 20070003415
    Abstract: An impeller blade for a top skin element joined to a bottom skin element. The blade can have an air foil shape. A pre-shaped tip is joined to the radial outside end of the blade.
    Type: Application
    Filed: June 30, 2005
    Publication date: January 4, 2007
    Inventors: Bernd Gigas, Frederick Kehr, Thomas Taylor