Patents by Inventor Georg PUCHAS

Georg PUCHAS 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).

  • Patent number: 11001531
    Abstract: Disclosed herein are prepregs for ceramic matrix composites, processes for the preparation of a green bodies using the prepregs disclosed herein, and processes for the preparation of the ceramic matrix composites from the green bodies prepared according processes provided herein.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: May 11, 2021
    Assignee: UNIVERSITÄT BAYREUTH
    Inventors: Stefan Knohl, Walter Krenkel, Georg Puchas, Thomas Wamser
  • Publication number: 20190210930
    Abstract: A prepreg for a ceramic matrix composite, a process for the preparation of a green body with the help of the prepreg, and a process for the preparation of the ceramic matrix composite from the green body prepared according to the present invention are provided. The inventive process comprises the following steps: a) impregnating an arrangement of ceramic fibers with a slurry, which slurry comprises the following components: (i) 10 to 40 vol.-%, based on the total volume of the slurry, of ceramic particles, (ii) an alcoholic organic solvent selected from: (ii-1) 21 to 35 wt.-%, based on the total weight of the ceramic particles in the slurry, of glycerol, (ii-2) 10 to 35 wt.-%, based on the total weight of the ceramic particles in the slurry, of an oligo or polyethylene glycol with an average molecular weight of at most 800 g/mol, (ii-3) 10 to 35 wt.-%, based on the total weight of the ceramic particles in the slurry, of at least one C2-C6 alkane diol, and (ii-4) 10 to 35 wt.
    Type: Application
    Filed: June 22, 2017
    Publication date: July 11, 2019
    Inventors: Stefan KNOHL, Walter KRENKEL, Georg PUCHAS, Thomas WAMSER