Patents by Inventor Joseph M. Swietlik

Joseph M. Swietlik 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).

  • Preparation of overbased magnesium sulphonates
    Patent number: 5534168
    Abstract: The use of magnesium oxide of specified, low, reactivity in a process for the production of overbased magnesium sulphonates, together with the introduction of water and an alcohol, into the reaction mixture during carbonation, makes it possible to prepare high base number products which have very low post carbonation sediments and which can be purified by rapid filtration.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: July 9, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: John A. Cleverley, Robert A. Wardle, Joseph M. Swietlik, John F. Marsh, Jeremy R. Spencer
  • Lubricating oil additives
    Patent number: 5069804
    Abstract: Improved stability of overbased phenates, particularly when formulated with overbased sulphonates, as well as improved foaming tendency and viscosity is obtained by treating the overbased phenate, either during or subsequent to the overbasing process, with from 0.1 to 10 wt. %, preferably 2 to 6 wt. %, of a carboxylic acid with a C.sub.10 to C.sub.24 unbranched segment, e.g. behenic acid.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: December 3, 1991
    Assignee: Exxon Research & Engineering
    Inventors: John F. Marsh, Joseph M. Swietlik
  • Lubricating oil additives
    Patent number: RE35461
    Abstract: Improved stability of overbased phenates, particularly when formulated with overbased sulphonates, as well as improved foaming tendency and viscosity is obtained by treated the overbased phenate, either during or subsequent to the overbasing process, with from 0.1 to 10 wt. %, preferably 2 to 6 wt. %, of a carboxylic acid with a C.sub.10 to C.sub.24 unbranched segment, e.g. behenic acid.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: February 25, 1997
    Assignee: Exxon Research and Engineering Company
    Inventors: John F. Marsh, Joseph M. Swietlik