Patents by Inventor Ulrich Paul

Ulrich Paul 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).

  • Process of removing phosphorus and suspended matter from waste water
    Patent number: 5154830
    Abstract: Phosphates which are dissolved or contained in suspension are substantially completely removed from a low-solids waste water which has been clarified. Precipitating and flocculating agents for transforming the dissolved phosphated to an undissolved form are added to the low-solids wate water and precipitation products and suspended matter are removed by microsieving through mesh openings in the range of about 10 to 150 .mu.m. Microsieving is preferably effected in two stages including a preliminary sieving through mesh openings from 60 to 150 .mu.m and a fine sieving through mesh openings from 10 to 80 .mu.m.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: October 13, 1992
    Assignee: Passavant-Werke AG
    Inventors: Ulrich Paul, Willi Schaper, Carl-Adolf Eschenbach, Karl Seel, Hubert Coenen