Patents by Inventor John E. Maddox

John E. Maddox 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).

  • Chemical compositions and their use as fuel additives
    Patent number: 5425789
    Abstract: A compound of the general formula ##STR1## where X is CONR.sub.2 or CO.sub.2.sup.- + H.sub.2 NR.sub.2Y and Z are the same or different and selected from the group consisting of CONR.sub.2,CO.sub.2 R, OCOR, --OR, --R, --NCOR andone of Y or Z may be absent andR is selected from the group consisting of alkyl, alkoxy alkyl or polyalkoxyalkyl preferably containing at least 10 carbon atoms in the main chain.
    Type: Grant
    Filed: April 28, 1993
    Date of Patent: June 20, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Kenneth Lewtas, Edwin W. Lehmann, David P. Gillingham, John E. Maddox