Patents by Inventor George Panagopoulos

George Panagopoulos 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).

  • Very low density polyethylene blends
    Publication number: 20060276594
    Abstract: Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and linear low density polyethylene (LLDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0.916 g/cm3, the VLDPE polymer preferably being linear and without long chain branching, and a LLDPE polymer having a density of from 0.916 to 0.940 g/cm3. The polymer blends are particularly suitable in blown and cast film applications.
    Type: Application
    Filed: August 10, 2006
    Publication date: December 7, 2006
    Applicant: UNIVATION TECHNOLOGIES, LLC
    Inventors: Paul German, James Farley, Richard Halle, George Panagopoulos
  • Very low density polyethylene and high density polyethylene blends
    Patent number: 7135526
    Abstract: Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and high density polyethylene (HDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0.916 g/cm3, the VLDPE polymer preferably being linear and without long chain branching, and a HDPE polymer having a density of greater than 0.940 g/cm3. The polymer blends are particularly suitable in blown and cast film applications.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: November 14, 2006
    Assignee: Univation Technologies, LLC
    Inventors: James M. Farley, Richard W. Halle, George Panagopoulos, Jerry M. Johnson
  • Very low density polyethylene blends
    Patent number: 7125933
    Abstract: Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and linear low density polyethylene (LLDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0.916 g/cm3, the VLDPE polymer preferably being linear and without long chain branching, and a LLDPE polymer having a density of from 0.916 to 0.940 g/cm3. The polymer blends are particularly suitable in blown and cast film applications.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: October 24, 2006
    Assignee: Univation Technologies, LLC
    Inventors: Paul Masten German, James McLeod Farley, Richard W. Halle, George Panagopoulos
  • 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
  • Very low density polyethelyne blends
    Publication number: 20040072005
    Abstract: Blends of very low density polyethylene produced using metallocene catalysts (mVLDPE) and linear low density polyethylene (LLDPE) are disclosed. The polymer blends include a metallocene-catalyzed VLDPE polymer having a density of less than 0.916 g/cm3, the VLDPE polymer preferably being linear and without long chain branching, and a LLDPE polymer having a density of from 0.916 to 0.940 g/cm3. The polymer blends are particularly suitable in blown and cast film applications.
    Type: Application
    Filed: October 28, 2003
    Publication date: April 15, 2004
    Inventors: Paul Masten German, Hames McLeod Farley, Richard W. Halle, George Panagopoulos
  • 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
  • Linear low density polyethylene based compositions with improved optics
    Patent number: 5455303
    Abstract: Disclosed is a polymer composition of (A) a polyolefin composition consisting essentially of (i) a linear low density polyethylene and (ii) a copolymer of propylene with ethylene and/or a C.sub.4 -C.sub.8 .alpha.-olefin, where R is an alkyl radical having 2 to 10 carbon atoms and (B) a low density polyethylene.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: October 3, 1995
    Assignee: Montell North America Inc.
    Inventors: George Panagopoulos, Jr., Camillo Cagnani, Claudio Cometto