Patents by Inventor Christoph Freist

Christoph Freist 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).

  • Method for producing and magnetising a bitumen film containing magnetic powder
    Patent number: 7344653
    Abstract: A bitumen film containing magnetic powder is heated prior to magnetization to a temperature enabling the magnetic powder particles to be oriented according to the effect of the magnetic field. The bitumen film is sufficiently cooled after magnetization in order to preserve the magnetization, whereby the orientation of the magnetic powder particles, which is adjusted during magnetization, is maintained.
    Type: Grant
    Filed: June 25, 2002
    Date of Patent: March 18, 2008
    Assignee: CWW-Gerko Akustik GmbH
    Inventors: Josef Polak, Christoph Freist, Gerd Mannebach, Ernst Hotz, Joachim Oster
  • Method for producing and magnetising a bitumen film containing magnetic powder
    Publication number: 20040238072
    Abstract: A bitumen film containing magnetic powder is heated prior to magnetization to a temperature enabling the magnetic powder particles to be oriented according to the effect of the magnetic field. The bitumen film is sufficiently cooled after magnetization in order to preserve said magnetization, whereby the orientation, whereby the orientation of the magnetic powder particles, which is adjusted during magnetization, is maintained.
    Type: Application
    Filed: July 21, 2004
    Publication date: December 2, 2004
    Inventors: Josef Polak, Christoph Freist, Gerd Mannebach, Ernst Hotz, Joachim Oster
  • Multilayer molded element
    Publication number: 20030011183
    Abstract: A multilayer molded element (1) is molded to an appropriate shape which conforms to an underside of floor areas or wheel housings of a vehicle. The multilayer structure includes a non-woven, resilient layer (3) which functions as a shock absorber and spring to absorb impact and damp noise. The resilient layer is disposed between cover layers (4, 5). Optionally, fabric layers (6, 7) are bonded to outsides of the cover layers.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 16, 2003
    Inventors: Christoph Freist, Georg Clemens Eichhorn, Meinolf Seifert, Ralf Dopheide
  • Sound deadening laminate
    Patent number: 6152259
    Abstract: A noise-deadening laminate board configured for noise deadening having a bituminous layer more than 1 mm thick, bonded to one side of a thermal insulation layer of foam, felt or the like, and an adhesive layer on the other side of the thermal insulation layer for adhesion to a component to be improved acoustically, the bituminous layer, thereby being located on the outer side of the laminate board.
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: November 28, 2000
    Assignee: CWW-GERKO Akustik GmbH & Co., KG
    Inventors: Christoph Freist, Josef Polak
  • Brake pads and process for their production
    Patent number: 5823301
    Abstract: A brake pad has a support made of two metal sheets bonded together by a damping layer. The damping layer is formed exclusively from a crosslinked plastic adhesive in a thickness of about 75 .mu.m to 100 .mu.m, and is either a peroxide-crosslinked polyacrylate or a peroxide-crosslinked silicone adhesive.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: October 20, 1998
    Assignee: CWW-Gerko Akustik GmbH & Co. KG
    Inventors: Karlheinz Bildner, Christoph Freist