TREA

Warren Letzsch

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  • Ellicott City, MD, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Deep catalytic cracking process
    • Patent number 7,479,218
    • Issue date Jan 20, 2009
    • Stone & Webster Process Technology, Inc.
    • Warren S. Letzsch
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Riser termination device
    • Patent number 7,429,363
    • Issue date Sep 30, 2008
    • Stone & Webster Process Technology, Inc.
    • Ed Yuan
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Process and apparatus for controlling catalyst temperature in a cat...
    • Patent number 7,273,543
    • Issue date Sep 25, 2007
    • Stone & Webster Process Technology, Inc.
    • Warren Letzsch
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Deep catalytic cracking process
    • Patent number 6,905,591
    • Issue date Jun 14, 2005
    • Stone & Webster Process Technology, Inc.
    • Warren S. Letzsch
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...

Patents Applicationslast 30 patents

  • Information Patent Application

    PROCESS FOR MAXIMUM DISTILLATE PRODUCTION FROM FLUID CATALYTIC CRAC...
    • Publication number 20130130889
    • Publication date May 23, 2013
    • Stone & Webster Process Technology, Inc.
    • Eusebius Gbordzoe
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Operation of catalyst withdrawal wells with packing
    • Publication number 20090269252
    • Publication date Oct 29, 2009
    • Stone & Webster Process Technology, Inc.
    • Ed Yuan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Riser termination device
    • Publication number 20060177357
    • Publication date Aug 10, 2006
    • Stone & Webster Process Technology, Inc.
    • Ed Yuan
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Deep catalytic cracking process
    • Publication number 20050163674
    • Publication date Jul 28, 2005
    • Warren S. Letzsch
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Process and apparatus for controlling catalyst temperature in a cat...
    • Publication number 20050029163
    • Publication date Feb 10, 2005
    • Warren Letzsch
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Deep catalytic cracking process
    • Publication number 20040060846
    • Publication date Apr 1, 2004
    • Warren S. Letzsch
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Application

    Deep catalytic cracking process
    • Publication number 20030127358
    • Publication date Jul 10, 2003
    • Warren S. Letzsch
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL