Patents by Inventor Nikolas Eustathopoulos

Nikolas Eustathopoulos 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).

  • Joint between a metal part and a ceramic part based SiC and/or C
    Patent number: 8177497
    Abstract: An assembly between a metal piece and a ceramic material piece made of SiC and/or C based ceramic material. The assembly includes a stack structure including the following elements assembled together in pairs in this order, by brazing: the metal piece; a first intermediate piece; a second intermediate piece; and the ceramic material piece. The second intermediate piece is made of another ceramic material, that is chemically less reactive relative to metals than are SiC or C, and that presents a coefficient of expansion smaller than that of the material constituting the metal piece. The first intermediate piece is made of metal and can deform to compensate for expansion difference between the metal piece and the second intermediate piece. The assembly can be used in a turbomachine.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: May 15, 2012
    Assignees: SNECMA, Commisariat a l'Energie Atomique, Institut National Polytechnique de Grenoble
    Inventors: Joel Michel Daniel Benoit, Jean-Francois Fromentin, Valerie Chaumat, Olivier Gillia, Nikolas Eustathopoulos, Fiqiri Hodaj, Alexey Koltsov
  • Joint Between a Metal Part and a Ceramic Part Based Sic and/or C
    Publication number: 20080304959
    Abstract: An assembly between a metal piece and a ceramic material piece made of SiC and/or C based ceramic material. The assembly includes a stack structure including the following elements assembled together in pairs in this order, by brazing: the metal piece; a first intermediate piece; a second intermediate piece; and the ceramic material piece. The second intermediate piece is made of another ceramic material, that is chemically less reactive relative to metals than are SiC or C, and that presents a coefficient of expansion smaller than that of the material constituting the metal piece. The first intermediate piece is made of metal and can deform to compensate for expansion difference between the metal piece and the second intermediate piece. The assembly can be used in a turbomachine.
    Type: Application
    Filed: December 8, 2006
    Publication date: December 11, 2008
    Applicants: Snecma, CEA, INPG
    Inventors: Joel Michel Daniel Benoit, Jean-Francois Fromentin, Valerie Chaumat, Olivier Gillia, Nikolas Eustathopoulos, Fiqiri Hodaj, Alexey Koltsov