Patents by Inventor Hans W. Nixdorf

Hans W. Nixdorf 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 reproducer
    Patent number: 4991222
    Abstract: A sound reproducer which is to be associated with the head of a hearer thereof has at least one sound source and a holder therefor in the form of an inflatable cushion associated with the sound source to provide that it is disposed in a position of use which can be set by the person using the device. The inflatable cushion may be in the form of an inflatable head-support cushion which combines the sound source therein.
    Type: Grant
    Filed: March 28, 1990
    Date of Patent: February 5, 1991
    Inventor: Hans W. Nixdorf
  • Window cleaning apparatus
    Patent number: 4202069
    Abstract: A vehicle windscreen cleaner device comprises a container which can be fastened to or is made integral with a windscreen wiper arm. The container is cylindrical and a portion of one side wall is grid-like with apertures. Either a part of the side wall or part of the end wall are removable to permit the insertion of a stick or rod of cleaning agent. In use, when the vehicle is used in the rain water is entrained into the container by the slipstream, dissolves some of the cleansing agent and is entrained onto the windscreen.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: May 13, 1980
    Assignee: ever clean GmbH H. W. Nixdorf
    Inventors: Hans W. Nixdorf, Gunther Tolle