Patents by Inventor Douglas J. Laurent

Douglas J. Laurent 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).

  • Metallocene-produced very low density polyethylenes
    Patent number: 6932592
    Abstract: A very low density polyethylene having a density of 0.890 to 0.915 and a Dart Drop value of at least about 450 g/mil or above is disclosed. Gas phase polymerization methods are also disclosed for making very low density linear polyolefins utilizing a metallocene catalyst, and the resulting polyolefin products. In a specific embodiment, a gas phase polymerization process is disclosed relating to the formation of a linear polyethylene having a very low density, e.g., ranging from 0.890 to 0.915, but with improved toughness.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: August 23, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James M. Farley, Richard W. Halle, George Panagopoulos, Jerry M. Johnson, Douglas J. Laurent, Alan M. Malakoff
  • Metallocene-produced very low density polyethylenes
    Patent number: 6800692
    Abstract: The present invention provides a polymer blend suitable for use as a film or a coating, the polymer blend including from 1 to 99% by weight of a metallocene-produced VLDPE polymer having a density less than 0.916 g/cm3, and from 1 to 99% by weight of an LDPE polymer having a density of from 0.916 to 0.928 g/cm3 wherein the sum of (a) and (b) is 100%. The VLDPE polymer can have a melt index of from 6 to 15 dg/min, or from 9 to 12 dg/min.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: October 5, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: James McLeod Farley, Richard Wayne Halle, George Panagopoulous, Donna Sue Davis, Douglas J. Laurent, Alan M. Malakoff, David M. Simpson, Kevin Cable
  • Metallocene-produced very low density polyethylenes
    Publication number: 20030215659
    Abstract: The present invention provides a polymer blend suitable for use as a film or a coating, the polymer blend including from 1 to 99% by weight of a metallocene-produced VLDPE polymer having a density less than 0.916 g/cm3, and from 1 to 99% by weight of an LDPE polymer having a density of from 0.916 to 0.928 g/cm3 wherein the sum of (a) and (b) is 100%. The VLDPE polymer can have a melt index of from 6 to 15 dg/min, or from 9 to 12 dg/min.
    Type: Application
    Filed: March 24, 2003
    Publication date: November 20, 2003
    Inventors: James MacLeod Farley, Richard Wayne Halle, George Panagopoulos, Donna Sue Davis, Douglas J Laurent, Alan M Malakoff, David M Simpson, Kevin Cable
  • Metallocene-produced very low density polyethylenes
    Publication number: 20030213938
    Abstract: A very low density polyethylene having a density of 0.890 to 0.915 and a Dart Drop value of at least about 450 g/mil or above is disclosed. Gas phase polymerization methods are also disclosed for making very low density linear polyolefins utilizing a metallocene catalyst, and the resulting polyolefin products. In a specific embodiment, a gas phase polymerization process is disclosed relating to the formation of a linear polyethylene having a very low density, e.g., ranging from 0.890 to 0.915, but with improved toughness.
    Type: Application
    Filed: December 13, 2002
    Publication date: November 20, 2003
    Inventors: James M. Farley, Richard W. Halle, George Panagopoulos, Jerry M. Johnson, Douglas J. Laurent, Alan M. Malakoff
  • Low gloss film and process of manufacture (FP 1323)
    Patent number: 4880682
    Abstract: A multilayer film comprises a elastomeric core layer and at least one thermoplastic skin layer having a microundulating surface configuration providing the film with a low gloss.
    Type: Grant
    Filed: March 22, 1988
    Date of Patent: November 14, 1989
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Donald R. Hazelton, Douglas J. Laurent, Lawrence K. Locke, William J. Hodgson, Jr.
  • Low gloss films of enhanced adhesion
    Patent number: 4436520
    Abstract: The adhesion property of a surface of a polyolefin film, for example a polyethylene film, having a gloss of less than about 8 is enhanced with the mean value of the maximum profile height less than 150 and with mean maximum peak to valley height less than 230.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: March 13, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Robert J. Lipko, Douglas J. Laurent