TREA

Douglas A. Welch

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  • Portland, CT, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Low deflection fan case cotainment fabric
    • Patent number 7,517,184
    • Issue date Apr 14, 2009
    • Unied Technologies Corporation
    • Mark W. Costa
    • F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
  • Information Patent Grant

    Chamfered attachment for a bladed rotor
    • Patent number 6,846,159
    • Issue date Jan 25, 2005
    • United Technologies Corporation
    • Douglas J. Zabawa
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Frangible fan blade
    • Patent number 6,146,099
    • Issue date Nov 14, 2000
    • United Technologies Corporation
    • Robert H. Zipps
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Penetration resistant fan casing for a turbine engine
    • Patent number 6,059,524
    • Issue date May 9, 2000
    • United Technologies Corporation
    • Mark W. Costa
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Impact resistant hollow airfoils
    • Patent number 6,048,174
    • Issue date Apr 11, 2000
    • United Technologies Corporation
    • Marc Samit
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Frangible fan blade
    • Patent number 5,836,744
    • Issue date Nov 17, 1998
    • United Technologies Corporation
    • Robert H. Zipps
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Method and apparatus for reducing stress on the tips of turbine or...
    • Patent number 5,476,363
    • Issue date Dec 19, 1995
    • Sohl; Charles E.
    • Melvin Freling
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

  • Information Patent Application

    Low deflection fan case cotainment fabric
    • Publication number 20070280817
    • Publication date Dec 6, 2007
    • United Technologies Corporation
    • Mark W. Costa
    • D03 - WEAVING
  • Information Patent Application

    Chamfered attachment for a bladed rotor
    • Publication number 20030194319
    • Publication date Oct 16, 2003
    • Douglas J. Zabawa
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES