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Stephen D. Challis

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  • Fetcham, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Recracking of cat naphtha for maximizing light olefins yields
    • Patent number 5,846,403
    • Issue date Dec 8, 1998
    • Exxon Research and Engineering Company
    • George A. Swan
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    FCC feed injector
    • Patent number 5,173,175
    • Issue date Dec 22, 1992
    • Exxon Research and Engineering Company
    • Todd R. Steffens
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL