Patents by Inventor Malte Gröning

Malte Gröning 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).

  • Material for absorbing noise in aircraft
    Patent number: 7946525
    Abstract: The invention relates to a material for absorbing noise in aircraft, comprising at least one barrier layer and at least one absorptive layer. The barrier layer is provided with an elastomeric material having a minimum specific density of 1 and a mass per unit area of 1.3 kg/m2 or less while the absorptive layer is equipped with a porous and/or open-cell material having a weight per volume of 4 to 50 kg/m3, preferably 10 to 40 kg/m3, more preferably 15 to 35 kg/m3 even more preferably 20 to 30 kg/m3. The mass per unit area of the sound-absorbing material amounts to 2 kg/m2 or less.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: May 24, 2011
    Assignee: Lufthansa Technik AG
    Inventor: Malte Gröning
  • Material for absorbing noise in aircraft
    Publication number: 20090302154
    Abstract: The invention relates to a material for absorbing noise in aircraft, comprising at least one barrier layer and at least one absorptive layer. The barrier layer is provided with an elastomeric material having a minimum specific density of 1 and a mass per unit area of 1.3 kg/m2 or less while the absorptive layer is equipped with a porous and/or open-cell material having a weight per volume of 4 to 50 kg/m3, preferably 10 to 40 kg/m3, more preferably 15 to 35 kg/m3 even more preferably 20 to 30 kg/m3. The mass per unit area of the sound-absorbing material amounts to 2 kg/m2 or less.
    Type: Application
    Filed: April 28, 2006
    Publication date: December 10, 2009
    Inventor: Malte Gröning