Patents by Inventor Hans Hettenbach

Hans Hettenbach 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).

  • Flame barrier comprising a nonwoven fabric layer containing phenolic, para-aramid or melamine staple fibers in combination with vermiculite
    Patent number: 5534325
    Abstract: A flame barrier made of nonwoven fabric for use as a component of a planar multilayer structure, especially a vehicle or aircraft passenger seat. The flame barrier contains staple fibers made of phenolic resin, para-aramid, or melamine resin, alone or mixed with 20 to 60 wt % preoxidized polyacrylonitrile staple fibers. The nonwoven fabric barrier also contains 15 to 30 wt % vermiculite, which is distributed through the entire volume of the nonwoven fabric. The flame barrier possesses a mass per unit area of 100 g/m.sup.2 to 210 g/m.sup.2. The method of manufacturing the nonwoven fabric flame barrier makes use of water jet needling.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: July 9, 1996
    Assignee: Firma Carl Freudenberg
    Inventors: Kurt Jorder, Werner Schafer, Hans Hettenbach
  • Method for manufacturing interior fitted part for motor vehicle
    Patent number: 5387382
    Abstract: In a process for manufacturing an interior fitted part for motor vehicles, such as an inside roof lining for automobiles, a staple-fiber formed fabric of a drawn polyethylene terephthalate matrix component and of a binding component is subjected at least once during the process to an annealing process, which increases the thermal stability of the fitted part. Also disclosed is a fitted part manufactured by this method.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: February 7, 1995
    Assignee: Firma Carl Freudenberg
    Inventors: Walter Fottinger, Hansjorg Grimm, Michael Hauber, Hans Hettenbach, Patra Hofmann, Gerhard Schaut