Patents by Inventor Aubrey L. Burrows

Aubrey L. Burrows 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).

  • Additives and lubricating oil compositions containing same
    Patent number: 8999903
    Abstract: Para-alkylated substituted diphenylamines are made by catalytically alkylating diphenylamine with a branched-chain alkene, such as propene, oligomer mixture in which the oligomer present in the greatest percentage has 15-24 carbon atoms. The alkylated diphenylamines are useful crankcase lubricant additives such as for reducing piston deposits and engine sludge.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: April 7, 2015
    Assignee: Infineum International Limited
    Inventors: Stephen Arrowsmith, Christopher J. Booth, Aubrey L. Burrows, Paul Wilson, Neal J. Milne, Lin Wangkan, Jacob Emert, Laurent Chambard
  • ADDITIVES AND LUBRICATING OIL COMPOSITIONS CONTAINING SAME
    Publication number: 20100173811
    Abstract: Para-alkylated substituted diphenylamines are made by catalytically alkylating diphenylamine with a branched-chain alkene, such as propene, oligomer mixture in which the oligomer present in the greatest percentage has 15-24 carbon atoms. The alkylated diphenylamines are useful crankcase lubricant additives such as for reducing piston deposits and engine sludge.
    Type: Application
    Filed: June 6, 2008
    Publication date: July 8, 2010
    Inventors: Stephen Arrowsmith, Christopher J. Booth, Aubrey L. Burrows, Paul Wilson, Neal J. Milne, Lin Wangkan, Jacob Emert, Laurent Chambard
  • Additives
    Publication number: 20080312472
    Abstract: Para-alkylated diphenylamine antioxidants are made by catalytically alkylating diphenylamine with an alkylating agent in the form of a mixture of branched-chain oligomers of butene, the alkylating agent having an average molecular weight in the range of 140 to 300 and a methylvinylidene isomer content of no greater than 10%.
    Type: Application
    Filed: June 14, 2007
    Publication date: December 18, 2008
    Inventors: Stephen Arrowsmith, Christopher James Booth, Aubrey L. Burrows, Paul Wilson, Ronald P. Wangner
  • Liquid fuels and concentrates containing corrosion inhibitors
    Patent number: 4511366
    Abstract: Corrosion caused by gasohol or alcohol motor fuels is inhibited by the addition of a corrosion inhibiting amount of the combination of (A) a polymer of a C.sub.18 polyunsaturated aliphatic monocarboxylic acid (e.g. linoleic dimer and/or trimer) and (B) the reaction product of (i) a polyalkylene polyamine, (ii) a C.sub.18 monounsaturated aliphatic monocarboxylic acid (e.g. oleic acid), and (iii) an alkenyl succinic anhydride, in which the alkenyl group contains 8 to 30 carbon atoms.
    Type: Grant
    Filed: December 16, 1983
    Date of Patent: April 16, 1985
    Assignee: Ethyl Petroleum Additives, Inc.
    Inventors: Aubrey L. Burrows, Paul B. Mabley, Steven J. Field
  • Nitrogen-containing ashless dispersants and lubricating oil composition containing same
    Patent number: 4401581
    Abstract: Lubricating oil dispersants are made by reacting an (a) alkenyl succinic anhydride, (b) an alcohol (e.g. pentaerythritol), (c) a hydroxy-substituted amine (e.g. tris-hydroxymethylaminomethane, (d) a polyoxyalkyleneamine, and (e) an alkenyl succinimide.
    Type: Grant
    Filed: March 15, 1982
    Date of Patent: August 30, 1983
    Assignee: Edwin Cooper and Company Limited
    Inventors: Aubrey L. Burrows, Thomas J. Walter