Patents by Inventor Marco Pietrzyk

Marco Pietrzyk 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).

  • Silencer device for a fluid line and heating unit having a silencer device
    Patent number: 8919491
    Abstract: The present invention relates to a silencer device for a fluid line which comprises a resonator arrangement which comprises a first resonator tube comprising a first resonator chamber designed for a ?/4 damping of at least one sound wavelength, wherein the first resonator tube comprises a first longitudinal direction, two end walls facing each other in the first longitudinal direction and a first side wall extending between the end walls, and wherein the first resonator chamber is formed between the first side wall and the end walls of the first resonator tube.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: December 30, 2014
    Assignee: Webasto SE
    Inventors: Harald Trumler, Marco Pietrzyk, Werner Zimmerman, Nikolaus Gerhardt, Peter Neidenberger