Patents by Inventor Karl H. Hilterhaus

Karl H. Hilterhaus 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).

  • Inorganic-organic polymers and processes for their manufacture
    Patent number: 4156059
    Abstract: An organic-inorganic polymer for both porous and non-porous plastic products is produced by reacting a borate, in an aqueous alkaline solution, with a poly functional isocyanate.
    Type: Grant
    Filed: June 21, 1976
    Date of Patent: May 22, 1979
    Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbH
    Inventors: Karl H. Hilterhaus, Franz G. Reuter
  • Filter material and process for producing same
    Patent number: 4148734
    Abstract: This invention relates to filter material consisting substantially of a microporous and/or macroporous sheet structure obtained by coagulation of a polymer solution in which at least one surface area of the sheet structure is abraded more or less, depending on the desired pore size and a process for producing said filter materials.
    Type: Grant
    Filed: August 15, 1977
    Date of Patent: April 10, 1979
    Assignees: Chemie-Anlagenbau Bischofsheim GmbH, Reuter Technologie GmbH
    Inventors: Karl H. Hilterhaus, Franz G. Reuter
  • Non-flammable and optionally electrically conductive organo-silicate polymers and process for preparing same
    Patent number: 4136238
    Abstract: This invention relates to a process for preparing organosilicate polymers by reaction of a water glass solution with a compound having at least two isocyanate groups. The reaction is carried out in the presence of a zwitterion compound acting as catalyst and optionally in the presence of propellants and/or water glass hardening agents, the zwitterion compound having in the molecule at least one group with positive charge, at least one group with negative charge, and additionally at least one hydrogen atom with Zerewitinov activity.
    Type: Grant
    Filed: December 4, 1975
    Date of Patent: January 23, 1979
    Assignees: Metallgesellschaft A.G., Reuter Technologie GmbH, Chemie-Anlagenbau Bischofsheim GmbH
    Inventors: Karl H. Hilterhaus, Franz G. Reuter, Tankred Menzel