Patents Examined by P. A. Hruskoci
  • Process for controlling pollution and contamination in the electrodeposition of paint
    Patent number: 4153548
    Abstract: An acidic silica sol and coagulating polymer are used to reduce the tackiness of paint solids of electrodeposition paints and to condition such solids so that they can be separated and removed from the drippings and wash water obtained as a result of the application of electrodeposition paints to various types of products.
    Type: Grant
    Filed: June 27, 1975
    Date of Patent: May 8, 1979
    Assignee: Nalco Chemical Company
    Inventor: Steven W. Forney
  • Water purification process
    Patent number: 4028233
    Abstract: Drinking water is prepared from crude water containing dissolved lypophilic contaminants by adding polymers of ethylene or substituted ethylenes or copolymers of ethylene with less than 50 % by weight of other ethylenically unsaturated monomers which may contain additionally less than 2 mole % of ethylenes carrying a carboxyl function, and separating the polymer substance containing the lipophilic contaminants.
    Type: Grant
    Filed: March 7, 1975
    Date of Patent: June 7, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karl-Ernst Quentin, Ludwig Weil, Harald Berger