Patents by Inventor Rudi Weindel

Rudi Weindel 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).

  • Manufacture of fire protection materials based on alkali metal silicates
    Patent number: 4172110
    Abstract: A process for the manufacture of fire protection materials, in which an aqueous alkali metal silicate solution is dried to a water content of from 6 to 40% and the resulting powder is thermoplastically molded to form sheets, tapes or strips. These can be fitted into openings and passages of building units; in the event of a fire they eliminate water and form a stable, heat-insulating foam.
    Type: Grant
    Filed: July 13, 1977
    Date of Patent: October 23, 1979
    Assignee: BASF Aktiengesellschaft
    Inventors: Arndt C. Caesar, Ludwig Zuern, Rudi Weindel