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David John Barratt

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  • Thorton, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Gasoline composition
    • Patent number 5,948,126
    • Issue date Sep 7, 1999
    • Shell Oil Company
    • David John Barratt
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Gasoline composition
    • Patent number 5,925,152
    • Issue date Jul 20, 1999
    • Shell Oil Company
    • David John Barratt
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Gasoline composition
    • Patent number 5,891,202
    • Issue date Apr 6, 1999
    • Shell Oil Company
    • David John Barratt
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...