Patents by Inventor Ludwig Weil

Ludwig Weil 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).

  • Absorbent for water purification and process for preparing same
    Patent number: 4164482
    Abstract: An absorbent for water purification consisting of organic polymers and inorganic absorbing matter having a large surface is obtained by epitactically linking with each other the two components. The absorbent has good absorbing properties with respect to different classes of substances.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: August 14, 1979
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Harald Berger, Karl-Ernst Quentin, Ludwig Weil
  • 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
  • Method and apparatus for purifying water contaminated with anodically oxidizable organic matter
    Patent number: 4013554
    Abstract: Contaminated water is pumped through the anode compartment of an electrolytic cell which is separated from the cathode compartment by a diaphragm permeable to water and to inorganic ions. Particles of hydrophilic, electrically conductive, carbonaceous material capable of adsorbing the contaminants are retained in the anode compartment by the diaphragm and by screens in the water discharge conduit and are held in turbulent suspension by the flowing water so that they make intermittent conductive contact with the anode surface.
    Type: Grant
    Filed: May 13, 1975
    Date of Patent: March 22, 1977
    Assignee: Sachs-Systemtechnik GmbH
    Inventors: August Reis, Karl-Ernst Quentin, Ludwig Weil