Patents by Inventor Rolf V. Paumgartten

Rolf V. Paumgartten 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).

  • Process and apparatus for producing fibre-reinforced thermoplastic material for the production of mouldings
    Patent number: 5139723
    Abstract: A process for producing batches of a mouldable, fibre-reinforced thermoplastic material matched to a moulding to be produced and accompanied by heating, wherein quantities of an initial product of fibres and thermoplastic material-containing binder are intermittently moved into a preheating station, and intermittently moved therefrom through a melting channel as a strand and a matched batch is separated from the strand and supplied for batch further processing.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: August 18, 1992
    Assignee: Menzolit GmbH
    Inventors: Gerd Ehnert, Rolf V. Paumgartten