Patents by Inventor Ralf Dirnberger

Ralf Dirnberger 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).

  • Sound absorber
    Patent number: 12270165
    Abstract: The invention relates to a sound absorber (1) for a traffic route noise protection wall, wherein the sound absorber (1) comprises at least one plastic foam board (2). According to the invention, a first surface (3) of the plastic foam board (2) has a predeterminable number of sound absorber recesses (4) for predetermination of the absorption behavior with a predeterminable frequency response, wherein each of the sound absorber recesses (4) extends only through part of the thickness (5) of the plastic foam board (2).
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: April 8, 2025
    Assignee: Sealed Air Verpackungen GmbH
    Inventor: Ralf Dirnberger
  • SOUND ABSORBER
    Publication number: 20220341107
    Abstract: The invention relates to a sound absorber (1) for a traffic route noise protection wall, wherein the sound absorber (1) comprises at least one plastic foam board (2). According to the invention, a first surface (3) of the plastic foam board (2) has a predeterminable number of sound absorber recesses (4) for predetermination of the absorption behavior with a predeterminable frequency response, wherein each of the sound absorber recesses (4) extends only through part of the thickness (5) of the plastic foam board (2).
    Type: Application
    Filed: October 1, 2020
    Publication date: October 27, 2022
    Inventor: Ralf Dirnberger