Patents by Inventor Walter M. Richter

Walter M. Richter 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).

  • Swirling oscillation coffee maker
    Patent number: 5957035
    Abstract: A drip coffee maker rotates the filter basket about a vertical axis, to-and-fro through an angle of about 45 degrees with a frequency of about one second. The coffee may be held in the basket until a predetermined level of hot water has been added to the basket. The basket may be driven by gears acting through an electric motor.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: September 28, 1999
    Inventor: Walter M. Richter