Patents by Inventor Henry E. Blackshaw

Henry E. Blackshaw 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).

  • Patent number: 4744801
    Abstract: A fuel oil composition containing a minor proportion by weight of a mixture of 20 to 40 wt % of a polyphenol, a sulphurized polyphenol or a hindered phenol and 80 to 60 wt % of a cyclic amide derived from a dicarboxylic acid or anhydride having a hydrogen-and-carbon containing substituent of at least 40 carbon atoms and a polyalkylene polyamine having at least 2 nitrogen atoms and at least 3 carbon atoms (other than carbon atoms in the branched substituents) between the terminal amino groups.A suitable additive is a 70% by weight of the macrocyclic derivative of polyisobutenyl succinic anhydride (MW 1300) and penta propylene hexamine and 30% by weight of 4,4.sup.1 methylene bis (2,6 di tert butyl phenol).
    Type: Grant
    Filed: April 23, 1986
    Date of Patent: May 17, 1988
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Malcolm G. Taylor, Henry E. Blackshaw, David J. Claydon, Stephan Ilnyckyj