Patents by Inventor Helmut Nieke

Helmut Nieke 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-proofed choke
    Patent number: 4306209
    Abstract: A choke for use with alternating current has a ventilated housing with a perforate inner wall and an imperforate outer wall to which the choke is connected vibration-elastically. The space between the inner wall and the jacket is filled with a sound-absorbing material.
    Type: Grant
    Filed: September 23, 1980
    Date of Patent: December 15, 1981
    Assignee: Siemens Aktiengesellschaft
    Inventors: Joachim Choschzick, Helmut Nieke