Patents by Inventor Klaus D. Rohardt

Klaus D. Rohardt 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).

  • Patent number: 4780484
    Abstract: A molding material based on polyisocyanato-isocyanurates, polyols and flameproofing and fireproofing agents, as well as optionally polyisocyanates, fillers and promoters is described which is preferably in the form of a 2-component material and comprises 5 to 40% by weight of branched polyols, 20 to 40% by weight of the isocyanurate of 1,6-hexamethylene diisocyanate, 0 to 20% by weight of crude MDI and/or prepolymer of polyol and crude MDI and/or isophorone diisocyanate optionally in combination with further isocyanate groups containing compounds, 5 to 20% by weight of a fireproofing mixture mainly consisting of secondary ammonium phosphate, 0 to 50% by weight filler and 0 to 5% by weight promoter. This mass, which permits quick processing at room temperature or slighty increased temperatures, is useful as construction and repair material for many applications, especially in connection with the construction and repair of land, air and water vehicles.
    Type: Grant
    Filed: January 26, 1988
    Date of Patent: October 25, 1988
    Assignee: Mankiewicz Gebr. & Co. (GmbH & Co. KG)
    Inventors: Bernd Schubert, Klaus D. Rohardt, Michael O. Grau
  • Patent number: 4724250
    Abstract: A one-component molding material based on polyisocyanato-isocyanurates and flameproofing and fireproofing agents, as well as optionally polyisocyanates, fillers and promoters is described which comprises 40 to 80% by weight of the isocyanurate of 1,6-hexamethylene diisocyanate, 0 to 20% by weight of crude MDI and/or prepolymer of polyol and crude MDI and/or isophorone diisocyanate optinally in combination with further isocyanate groups containing compounds, 5 to 20% by weight of a fireproofing mixture mainly consisting of secondary ammonium phosphate, 0 to 50% by weight filler and 0 to 5% by weight promoter. This low viscosity putty-like mass which is cold-workable and is cured under the influence of moisture, especially at increased temperatures, is useful as construction material for many applications, especially for the manufacture of molded components and plate elements for the construction of land, air and water vehicles.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: February 9, 1988
    Assignee: Mankiewicz Gebr. & Co. (GmbH & Co. KG)
    Inventors: Bernd Schubert, Klaus D. Rohardt