Patents by Inventor Robert B. Heimann

Robert B. Heimann 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).

  • Modified composite silicon nitride powders for thermal coating technologies and process for their production
    Patent number: 6110853
    Abstract: The invention concerns the field of ceramics and relates to modified composite silicon nitride powders as used, for example, for coating highly stressed components. It is the aim of the invention to provide modified composite silicon nitride powders and a process for their production by means of which silicon nitride coatings can be produced by prior art coating techniques. This aim is achieved by a modified silicon nitride powder in which silicon nitride particles are contained in an oxide-nitride or silicon binder matrix, where the binder matrix occupies 10 to 40% by volume of the total volume of the powder and the powder particle size d.sub.90 .ltoreq.100 .mu.m.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: August 29, 2000
    Assignee: Fraunhofer-Gesellschaft zur Derung der Angewandten Forschung e.V.
    Inventors: Lutz-Michael Berger, Mathias Herrmann, Manfred Nebelung, Robert B. Heimann, Bernhard Wielage