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John F. Marsh

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  • Oxford, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Lubricating oil additives
    • Patent number RE35461
    • Issue date Feb 25, 1997
    • Exxon Research and Engineering Company
    • John F. Marsh
    • 508 - Solid anti-friction devices, materials therefor, lubricant or separant...
  • Information Patent Grant

    Preparation of overbased magnesium sulphonates
    • Patent number 5,534,168
    • Issue date Jul 9, 1996
    • Exxon Chemical Patents Inc.
    • John A. Cleverley
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Overbased metal sulphonate composition
    • Patent number 5,137,648
    • Issue date Aug 11, 1992
    • Exxon Chemical Patents Inc.
    • John F. Marsh
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Overbased metal sulphonate composition
    • Patent number 5,112,506
    • Issue date May 12, 1992
    • Exxon Chemical Patents Inc.
    • John F. Marsh
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Overbased magnesium sulphonate composition
    • Patent number 5,089,155
    • Issue date Feb 18, 1992
    • Exxon Chemical Patents Inc.
    • John F. Marsh
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Lubricating oil additives
    • Patent number 5,069,804
    • Issue date Dec 3, 1991
    • Exxon Research and Engineering
    • John F. Marsh
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Magnesium phenate detergents
    • Patent number 4,957,642
    • Issue date Sep 18, 1990
    • Exxon Chemical Patents Inc.
    • John A. Cleverley
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Overbased alkali metal additives
    • Patent number 4,839,094
    • Issue date Jun 13, 1989
    • Exxon Chemical Patents Inc.
    • John F. Marsh
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Basic alkaline earth metal sulphonates
    • Patent number 4,557,872
    • Issue date Dec 10, 1985
    • Exxon Research and Engineering Co.
    • John F. Marsh
    • C07 - ORGANIC CHEMISTRY