Patents by Inventor Klaus Begerow

Klaus Begerow 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 for decreasing the tendency to form deposits in plants for evaporating spent sulfite liquors
    Patent number: 4941946
    Abstract: A process for decreasing the tendency to form deposits in plants for evaporating spent sulfite liquors used to produce woodpulp. In the process, the liquors are treated with polyacrylic acids having a low molecular weight. In order to prevent virtually any deposition and to increase the evaporation rate, an aqueous solution of polyacrylic acid having a low molecular weight is added to the spent sulfite liquor in an entrance stage of the multiple-effect sulfite liquor in an entrance stage of the multiple-effect evaporating system and an aqueous solution of a copolymer of sulfonated styrene and maleic anhydride or an aqueous solution of a polyacrylic acid having a low molecular weight is added to the spent sulfite liquor in at least one succeeding stage of the multiple-effect evaporating system.
    Type: Grant
    Filed: February 6, 1989
    Date of Patent: July 17, 1990
    Assignee: Metallgesellschaft Aktiengesellschaft
    Inventors: Manfred Henn, Klaus Begerow, Volker Wichert