Patents by Inventor Wolfgang Riediger

Wolfgang Riediger 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).

  • Soundproofing material and the use thereof
    Patent number: 6376396
    Abstract: A soundproofing material made of nonwoven materials containing thermoplastic fibers for the acoustic frequency range of 100 to 5000 Hz is characterized in that the nonwoven material is permanently compacted to a specific flow resistance of RS=800-1400 Ns/m3 in two stages by a mechanical compaction process and a subsequent pressure/heat treatment.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: April 23, 2002
    Assignee: Beloh Beteiligungsgesellschaft mbH
    Inventors: Udo Thorn, Gholam Reza Sinambari, Wolfgang Riediger, Georg Jochim
  • Mechanically compacted non-woven material for use in the production of dimensionally stable mouldings
    Patent number: 6133171
    Abstract: To avoid breakage and weak points at the points of deflection in case of a large deflection angle and deep deformations a non-woven is formed of several fiber components, which forms a flexible, dimensionally stable molded article under pressure and temperature. An additional CoPES-fiber component facilitates lamination with other fibers without having to use additional auxiliaries.
    Type: Grant
    Filed: November 13, 1997
    Date of Patent: October 17, 2000
    Assignee: Lohmann GmbH & Co., KG
    Inventors: Bernd Potzler, Wolfgang Riediger