Patents by Inventor Michael David Sexton

Michael David Sexton 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).

  • Lubricating oil compositions
    Patent number: 3962104
    Abstract: Lubricating oils containing as an ashless detergent a quaternary ammonium salt derived from an organic acid, (e.g. carboxylic acid, sulphonic acid, alkyl phenol or phosphosulphurised hydrocarbon) and a cation obtained by the reaction of a tertiary amine, olefin oxide and water.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: June 8, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Swietlik Joseph Marian, Michael David Sexton
  • Lubricating oil compositions
    Patent number: 3956148
    Abstract: A lubricating oil composition comprising a lubricating oil and the product derived from the reaction of (1) hexamethylene tetramine with (2) a phenol, a methylene bis-phenol or a sulphurised phenol provided that in said phenol, methylene bis-phenol or sulphurised phenol at least one of the 2,4 and 6 positions of the phenol aromatic ring is unsubstituted. In such lubricating oils the reaction product acts as an ashless detergent.
    Type: Grant
    Filed: March 5, 1975
    Date of Patent: May 11, 1976
    Assignee: Exxon Research and Engineering Company
    Inventors: Joseph Marian Swietlik, Michael David Sexton