Patents by Inventor Hans Burkert

Hans Burkert 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).

  • Flocculants based on polymers containing water-soluble dialkylaminoneopentyl (meth)acrylates
    Patent number: 4465599
    Abstract: Flocculants based on polymers of neutralized or quaternized di-C.sub.1 -C.sub.3 -alkylaminoneopentyl (meth)acrylates and copolymers thereof are used for clarifying waste water and for flocculating sludges.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: August 14, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Burkert, Juergen Hartmann, Dietmar Jung, Wilfried Heide, Heinrich Hartmann, Herbert Spoor
  • Flocculant for sludges
    Patent number: 4444667
    Abstract: Sludges are flocculated by the addition of a polymer which is prepared by the homopolymerization of N-vinylformamide in the presence of a free-radical polymerization initiator to give a poly-N-vinylformamide, followed by hydrolysis of from 10 to 90% of the formyl groups in the poly-N-vinylformamide.
    Type: Grant
    Filed: July 12, 1982
    Date of Patent: April 24, 1984
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Burkert, Friedrich Brunnmueller, Karl-Heinz Beyer, Michael Kroener, Hans Mueller