Patents by Inventor Hans Heinrich Oltmann

Hans Heinrich Oltmann 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).

  • Sedimentation apparatus with flocculating feed well
    Patent number: 4054514
    Abstract: Sedimentation apparatus which employs an agitator-equipped mixing tank for a feed suspension and a flocculating agent or flocculant, which mixing tank is located within the central feed well of a continuously operating sedimentation tank, and wherein the flocculant-treated feed suspension overflows the top end of the mixing tank, then to continue along a downward path in the surrounding feed well of the tank.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: October 18, 1977
    Assignee: Dorr-Oliver Incorporated
    Inventor: Hans Heinrich Oltmann