Patents by Inventor Karl Brennfleck

Karl Brennfleck 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).

  • Coated product and production method
    Patent number: 11932937
    Abstract: The invention relates to a method for producing a product, to a crucible and to the use of a layer of crystalline silicon nitride, the product being formed from a material consisting mainly of carbon or of a ceramic material, the product being coated with surface layer by chemical vapor deposition (CVD), wherein the product is coated with a surface layer of at least semi-crystalline, preferably crystalline silicon nitride (Si3N4), the surface layer being formed on the product at a process temperature of more than 1100° C. to 1700° C.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: March 19, 2024
    Assignee: SCHUNK KOHLENSTOFFTECHNIK GMBH
    Inventors: Karl Brennfleck, Johannes Galle, Dennis Muscutt, Volker Rauhut
  • COATED PRODUCT AND PRODUCTION METHOD
    Publication number: 20200024732
    Abstract: The invention relates to a method for producing a product, to a crucible and to the use of a layer of crystalline silicon nitride, the product being formed from a material consisting mainly of carbon or of a ceramic material, the product being coated with surface layer by chemical vapor deposition (CVD), wherein the product is coated with a surface layer of at least semi-crystalline, preferably crystalline silicon nitride (Si3N4), the surface layer being formed on the product at a process temperature of more than 1100° C. to 1700° C.
    Type: Application
    Filed: March 1, 2018
    Publication date: January 23, 2020
    Inventors: Karl BRENNFLECK, Johannes GALLE, Dennis MUSCUTT, Volker RAUHUT
  • Composite superconducting fiber
    Patent number: 4849288
    Abstract: A superconducting fiber of a superconducting fiber bundle includes a carrier fiber having an outer surface, and superconducting layers and separating layers alternatingly surrounding the outer surface of the carrier fiber and a method for producing the same.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: July 18, 1989
    Assignees: Brown, Boveri & Cie. AG, Kernforschungszentrum Karlsruhe GmbH
    Inventors: Franz Schmaderer, Georg F. Wahl, Cord-Heinrich Dustmann, Erich Fitzer, Karl Brennfleck, Manfred Dietrich
  • Superconducting fiber
    Patent number: 4585696
    Abstract: A superconducting fiber of a superconducting fiber bundle, in which a base layer of a carbide or oxide is applied to the outer surface of a carrier fiber and subsequently a superconducting layer is deposited on the base layer to which the superconducting layer adheres.
    Type: Grant
    Filed: May 25, 1984
    Date of Patent: April 29, 1986
    Assignees: Brown, Boveri & Cie AG, Kernforschungszentrum Karlsruhe GmbH
    Inventors: Cord-Heinrich Dustmann, Georg Wahl, Franz Schmaderer, Erich Fitzer, Karl Brennfleck, Manfred Dietrich, Lienhard Paterok
  • Method of forming a heat-barrier layer on a metal substrate
    Patent number: 4540606
    Abstract: A method for the application or impregnation of a highly adherent heat-barrier layer on a metal substrate comprising effecting chemical vapor-phase deposition of zirconium dioxide as a heat-barrier layer with infiltration by finely granular zirconium dioxide in a metal felt. The vapor-phase deposition with infiltration of the metal felt can take place, in particular, from zirconium chloride, preferably within a temperature range between 550.degree. C. and 750.degree. C.
    Type: Grant
    Filed: July 17, 1984
    Date of Patent: September 10, 1985
    Assignee: MTU Motoren-und Turbinen-Union Munchen GmbH
    Inventors: Erich Fitzer, Karl Brennfleck, Jurgen Schlichting, deceased
  • Process for the production of a flexible superconductor
    Patent number: 4299861
    Abstract: A process for the production of a flexible superconductor comprising a carbon fiber having thereon a layer of niobium carbonitride, and an outer layer of a highly conductive metal. Initially, niobium is deposited on the fiber, and the niobium-coated fiber is then exposed to gaseous sources of carbon and nitrogen while the temperature is subsequently raised.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: November 10, 1981
    Assignee: Kernforschungszentrum Karlsruhe Gesellschaft mit beschrankter Haftung
    Inventors: Manfred Dietrich, Helmut Wuhl, Erich Fitzer, Karl Brennfleck, Dietrich Kehr