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David Stubbs

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  • Cleveland, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of marking hydrocarbon liquids
    • Patent number 10,816,533
    • Issue date Oct 27, 2020
    • Johnson Matthey Public Limited Company
    • David Stubbs
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Method of marking hydrocarbon liquids
    • Patent number 10,106,754
    • Issue date Oct 23, 2018
    • Johnson Matthey Public Limited Company
    • David Stubbs
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Method of marking hydrocarbon liquids
    • Patent number 9,678,054
    • Issue date Jun 13, 2017
    • Johnson Matthey Public Limited Company
    • David Stubbs
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...

Patents Applicationslast 30 patents

  • Information Patent Application

    Method Of Marking Hydrocarbon Liquids
    • Publication number 20190017985
    • Publication date Jan 17, 2019
    • Johnson Matthey Public Limited Company
    • David Stubbs
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Application

    METHOD OF MARKING HYDROCARBON LIQUIDS
    • Publication number 20170240826
    • Publication date Aug 24, 2017
    • Johnson Matthey Public Limited Company
    • David STUBBS
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Application

    METHOD OF MARKING HYDROCARBON LIQUIDS
    • Publication number 20140120626
    • Publication date May 1, 2014
    • Johnson Matthey Public Limited Company
    • David Stubbs
    • G01 - MEASURING TESTING