Patents by Inventor Gareth Charles Jeffrey

Gareth Charles Jeffrey has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fuel additives and compositions
    Patent number: 6086645
    Abstract: This invention relates to low sulfur fuel compositions which exhibit improved lubricity compared to the low sulfur fuels alone. The low sulfur fuel compositions contain a middle distillate fuel having a sulfur content of 0.2% by weight or less, a carboxylic acid amide and at least one member selected from the group consisting of cold flow improvers, ashless dispersants, and mixtures thereof.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: July 11, 2000
    Assignee: Ethyl Petroleum Additives, Ltd
    Inventors: Robert Quigley, Gareth Charles Jeffrey
  • Use of mixed alkaline earth-alkali metal systems as emissions reducing agents in compression ignition engines
    Patent number: 5919276
    Abstract: The present invention relates to fuel compositions containing a base fuel and a fuel additive, wherein the fuel additive comprises a mixture of calcium and either alkali metals, alkaline earth metals other than calcium or mixtures thereof. The present invention also relates to a method for reducing emissions in engines burning said fuel compositions.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: July 6, 1999
    Assignee: Ethyl Petroleum Additives Limited
    Inventor: Gareth Charles Jeffrey