Patents by Inventor Joachim Niewöhner

Joachim Niewöhner 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 for producing carbon-ceramic brake discs
    Patent number: 7993549
    Abstract: Process for producing carbon-ceramic brake discs comprising the following steps: production of a carbonized core body by press-molding a mixture containing reinforcing fibers and a binder, curing the binder by heating, and carbonizing by heating the press-molded body under exclusion of oxidizing substances to a temperature of between 750° C. and 1300° C., press-molding a moldable, reinforcing fiber-containing material onto the prefabricated carbonized core body which after the additional process steps produces the friction layer, curing the material for the friction layer, carbonizing the entire body and then infiltrating the composite body with liquid silicon.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: August 9, 2011
    Assignee: Audi AG
    Inventors: Joachim Niewöhner, Markus Stettberger, Arno Sommer, Dunja Müller, Jens Rosenlöcher