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Douglas A. Keller

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  • Oviedo, FL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus comprising a CMC-comprising body and compliant porous ele...
    • Patent number 9,127,565
    • Issue date Sep 8, 2015
    • SIEMENS ENERGY, INC.
    • Douglas A. Keller
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    CMC wall structure with integral cooling channels
    • Patent number 8,257,809
    • Issue date Sep 4, 2012
    • SIEMENS ENERGY, INC.
    • Jay A. Morrison
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    CMC anchor for attaching a ceramic thermal barrier to metal
    • Patent number 8,211,524
    • Issue date Jul 3, 2012
    • SIEMENS ENERGY, INC.
    • Malberto Gonzalez
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Patient support brake system
    • Patent number 8,196,237
    • Issue date Jun 12, 2012
    • Stryker Corporation
    • Cory Herbst
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Gas turbine airfoil
    • Patent number 8,167,573
    • Issue date May 1, 2012
    • SIEMENS ENERGY, INC.
    • Gary B. Merrill
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Ceramic matrix composite attachment apparatus and method
    • Patent number 8,061,977
    • Issue date Nov 22, 2011
    • SIEMENS ENERGY, INC.
    • Douglas A. Keller
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Ceramic matrix composite turbine engine components with unitary sti...
    • Patent number 7,950,234
    • Issue date May 31, 2011
    • SIEMENS ENERGY, INC.
    • David Charles Radonovich
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Wavy CMC wall hybrid ceramic apparatus
    • Patent number 7,908,867
    • Issue date Mar 22, 2011
    • SIEMENS ENERGY, INC.
    • Douglas A. Keller
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Grant

    Ring seal for a turbine engine
    • Patent number 7,871,244
    • Issue date Jan 18, 2011
    • SIEMENS ENERGY, INC.
    • Bonnie D. Marini
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Flexible, high-temperature ceramic seal element
    • Patent number 7,798,769
    • Issue date Sep 21, 2010
    • SIEMENS ENERGY, INC.
    • Douglas A. Keller
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Turbine engine ring seal
    • Patent number 7,726,936
    • Issue date Jun 1, 2010
    • SIEMENS ENERGY, INC.
    • Douglas A. Keller
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    CMC to metal attachment mechanism
    • Patent number 7,722,317
    • Issue date May 25, 2010
    • SIEMENS ENERGY, INC.
    • Anthony L. Schiavo
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Pin-loaded mounting apparatus for a refractory component in a combu...
    • Patent number 7,563,071
    • Issue date Jul 21, 2009
    • SIEMENS ENERGY, INC.
    • Christian X. Campbell
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Multi-layer ring seal
    • Patent number 7,534,086
    • Issue date May 19, 2009
    • SIEMENS ENERGY, INC.
    • Stefan Mazzola
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Ring seal attachment system
    • Patent number 7,494,317
    • Issue date Feb 24, 2009
    • SIEMENS ENERGY, INC.
    • Douglas A. Keller
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Grant

    Trailing edge attachment for composite airfoil
    • Patent number 7,393,183
    • Issue date Jul 1, 2008
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    CMC turbine shroud ring segment and fabrication method
    • Patent number 7,371,043
    • Issue date May 13, 2008
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Ring seal system with reduced cooling requirements
    • Patent number 7,278,820
    • Issue date Oct 9, 2007
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Stacked lamellate assembly
    • Patent number 7,247,003
    • Issue date Jul 24, 2007
    • Siemens Power Generation, Inc.
    • Michael A. Burke
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method for operating a gas turbine
    • Patent number 7,124,591
    • Issue date Oct 24, 2006
    • Siemens Power Generation, Inc.
    • Joan Mae Baer
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Patents Applicationslast 30 patents

  • Information Patent Application

    CMC ANCHOR FOR ATTACHING A CERAMIC THERMAL BARRIER TO METAL
    • Publication number 20120148794
    • Publication date Jun 14, 2012
    • SIEMENS POWER GENERATION, INC.
    • Douglas A. Keller
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Application

    CMC WALL STRUCTURE WITH INTEGRAL COOLING CHANNELS
    • Publication number 20120125585
    • Publication date May 24, 2012
    • Siemens Power Generation, Inc.
    • Jay A. Morrison
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    TURBINE ENGINE RING SEAL
    • Publication number 20100104426
    • Publication date Apr 29, 2010
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    GAS TURBINE AIRFOIL
    • Publication number 20100074726
    • Publication date Mar 25, 2010
    • Gary B. Merrill
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    PATIENT SUPPORT BRAKE SYSTEM
    • Publication number 20090288254
    • Publication date Nov 26, 2009
    • Stryker Corporation
    • Cory Herbst
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Application

    Apparatus Comprising a CMC-Comprising Body and Compliant Porous Ele...
    • Publication number 20090260364
    • Publication date Oct 22, 2009
    • SIEMENS POWER GENERATION, INC.
    • Douglas A. Keller
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Application

    HYBRID CERAMIC STRUCTURE WITH INTERNAL COOLING ARRANGEMENTS
    • Publication number 20090252907
    • Publication date Oct 8, 2009
    • SIEMENS POWER GENERATION, INC.
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Wavy CMC Wall Hybrid Ceramic Apparatus
    • Publication number 20090071160
    • Publication date Mar 19, 2009
    • SIEMENS POWER GENERATION, INC.
    • Douglas A. Keller
    • F23 - COMBUSTION APPARATUS COMBUSTION PROCESSES
  • Information Patent Application

    Ceramic matrix composite attachment apparatus and method
    • Publication number 20090010755
    • Publication date Jan 8, 2009
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Ring seal for a turbine engine
    • Publication number 20080273967
    • Publication date Nov 6, 2008
    • Siemens Power Generation, Inc.
    • Bonnie D. Marini
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Flexible, high-temperature ceramic seal element
    • Publication number 20080199307
    • Publication date Aug 21, 2008
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Thermally insulated CMC structure with internal cooling
    • Publication number 20080199661
    • Publication date Aug 21, 2008
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    CMC to metal attachment mechanism
    • Publication number 20080178465
    • Publication date Jul 31, 2008
    • Siemens Power Generation, Inc.
    • Anthony L. Schiavo
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Ceramic matrix composite turbine engine components with unitary sti...
    • Publication number 20080087021
    • Publication date Apr 17, 2008
    • Siemens Power Generation, Inc.
    • David Charles Radonovich
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Ring seal for a turbine engine
    • Publication number 20080025838
    • Publication date Jan 31, 2008
    • Siemens Power Generation, Inc.
    • Bonnie D. Marini
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Multi-layer ring seal
    • Publication number 20070258809
    • Publication date Nov 8, 2007
    • Siemens Power Generation, Inc.
    • Stefan Mazzola
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    CMC turbine shroud ring segment and fabrication method
    • Publication number 20070160466
    • Publication date Jul 12, 2007
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Ring seal system with reduced cooling requirements
    • Publication number 20070077141
    • Publication date Apr 5, 2007
    • Siemens Power Generation, Inc.
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Pin-loaded mounting apparatus for a refractory component in a combu...
    • Publication number 20070031258
    • Publication date Feb 8, 2007
    • Siemens Westinghouse Power Corporation
    • Christian X. Campbell
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Ring seal attachment system
    • Publication number 20060292001
    • Publication date Dec 28, 2006
    • Siemens Westinghouse Power Corporation
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Trailing edge attachment for composite airfoil
    • Publication number 20060285973
    • Publication date Dec 21, 2006
    • Siemens Westinghouse Power Corporation
    • Douglas A. Keller
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Stacked lamellate assembly
    • Publication number 20060120874
    • Publication date Jun 8, 2006
    • Siemens Westinghouse Power Corp.
    • Michael A. Burke
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Application

    Method for operating a gas turbine
    • Publication number 20050235649
    • Publication date Oct 27, 2005
    • Siemens Westinghouse Power Corporation
    • Joan M. Baer
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
  • Information Patent Application

    Method for operating a gas turbine
    • Publication number 20050150229
    • Publication date Jul 14, 2005
    • Siemens Westinghouse Power Corporation
    • Joan Mae Baer
    • Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...