TREA

Johannes Didericus De Graaf

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  • Amsterdam, NL
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus and process for heating steam
    • Patent number 6,886,501
    • Issue date May 3, 2005
    • Shell Oil Company
    • Sjoerd Bosch
    • F22 - STEAM GENERATION
  • Information Patent Grant

    Process for heating system
    • Patent number 6,840,199
    • Issue date Jan 11, 2005
    • Shell Oil Company
    • Franciscus Gerardus Van Dongen
    • F22 - STEAM GENERATION
  • Information Patent Grant

    Apparatus for heating steam
    • Patent number 6,766,772
    • Issue date Jul 27, 2004
    • Shell Oil Company
    • Franciscus Gerardus Van Dongen
    • F22 - STEAM GENERATION

Patents Applicationslast 30 patents

  • Information Patent Application

    APPARATUS AND PROCESS FOR HEATING STEAM
    • Publication number 20040187796
    • Publication date Sep 30, 2004
    • Sjoerd Bosch
    • F22 - STEAM GENERATION
  • Information Patent Application

    Process for heating system
    • Publication number 20030221637
    • Publication date Dec 4, 2003
    • Franciscus Gerardus Van Dongen
    • F22 - STEAM GENERATION
  • Information Patent Application

    Apparatus for heating steam
    • Publication number 20030168022
    • Publication date Sep 11, 2003
    • Franciscus Gerardus Van Dongen
    • F22 - STEAM GENERATION