Patents by Inventor Steven Edward Donnachie

Steven Edward Donnachie 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).

  • Synthetic lubricant composition and process
    Patent number: 7022784
    Abstract: A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: April 4, 2006
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Margaret May-Som Wu, Steven P. Rucker, Richard T. Spissell, Steven Edward Donnachie
  • Synthetic hydrocarbon fluid
    Patent number: 6872692
    Abstract: A synthetic lubricant base stock is provided having a kinematic viscosity at 100° C. of from 5 to about 300 cS and a VI greater than 100. The base stock comprises random co-oligomers of an alpha olefin or mixtures thereof and an olefinic substituted aromatic compound which co-oligomers are prepared in the presence of a Friedel-Crafts catalyst.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: March 29, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Margaret May-Som Wu, Steven Edward Donnachie, James Thomas Carey, Walter David Vann, Norman Yang, Dilip Surana
  • Novel synthetic lubricant composition and process
    Publication number: 20040082728
    Abstract: A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer.
    Type: Application
    Filed: September 16, 2003
    Publication date: April 29, 2004
    Inventors: Margaret May-Som Wu, Steven P. Rucker, Richard T. Spissell, Steven Edward Donnachie
  • Synthetic hydrocarbon fluid
    Publication number: 20030114320
    Abstract: A synthetic lubricant base stock is provided hang a kinematic viscosity at 100° C. of from 5 to about 300 cS and a VI greater than 100. The base stock comprises random co-oligomers of an alpha olefin or mixtures thereof and an olefinic substituted aromatic compound which co-oligomers are prepared in the presence of a Friedel-Crafts catalyst.
    Type: Application
    Filed: September 10, 2002
    Publication date: June 19, 2003
    Inventors: Margaret May-Som Wu, Steven Edward Donnachie, James Thomas Carey, Walter David Vann, Norman Yang, Dilip Surana