Patents by Inventor Ute Herfeld, heir

Ute Herfeld, heir 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).

  • Mixer
    Patent number: 4930897
    Abstract: The invention relates to a mixer in which at least one end wall and at least one part of the peripheral wall can be moved relative to one another in such a way that the interior of the mixing vessel is freely accessible from the periphery. Such a mixer is distinguished by a very good cleaning facility.
    Type: Grant
    Filed: March 2, 1988
    Date of Patent: June 5, 1990
    Inventors: Friedrich W. Herfeld, deceased, Ute Herfeld, heir