Patents by Inventor Bart Lauwers

Bart Lauwers 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).

  • Publication number: 20180257286
    Abstract: Disclosed are stretch films and methods for making the same, which can provide desired performance.
    Type: Application
    Filed: January 3, 2018
    Publication date: September 13, 2018
    Inventors: Carolina A. Cateto, Michael J. Vinck, Achiel J. Van Loon, Bart Lauwers
  • Publication number: 20110040623
    Abstract: According to some embodiments, it may be determined, at an identification engine, that a first access of a web site is being established via a first connection between a web server and a remote device of a user. Information about the first connection may then be stored at the identification engine. It may also be determined, at the identification engine, that a second access of a second web site is being established via a second connection between a second web server and the remote device of the user. Information about the second connection may be compared, at the identification engine, with the stored information about the first connection. Based on said comparing, the second connection may be associated with the first connection.
    Type: Application
    Filed: August 14, 2009
    Publication date: February 17, 2011
    Inventors: Bart Lauwers, Kurt Briers, Filip Lauweres, Michael Vaes
  • Patent number: 7632573
    Abstract: The invention relates to a polymer comprising units derived from ethylene having: a) a Melt Index of from 0.05 to 20 g/10 min; b) at least 10 per 1000 C-atoms of short chain branches, containing five carbon atoms or less, and less than 3.5 mol %, of units derived from a copolymerizable ethylenically unsaturated ester, c) a density of from 0.90 to 0.94 g/cm3, preferably 0.91 to 0.935 g/cm3, especially 0.92 to 0.93 g/cm3, and d) a relaxation time as described herein of at least 10 s. The polymer may be used for stretch hood film, preferably as a blown film coextruded tube comprising: a) a core of the above polymer; and b) a skin layer, on each side of the core which may be of the same or different composition, comprising at least 60 wt % of an LLDPE having density of 0.91 to 0.94 g/cm3.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: December 15, 2009
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stefan Bertil Ohlsson, Bart Lauwers, Jan C. Donck, Jef Vaes
  • Publication number: 20080263999
    Abstract: The invention relates to a polymer comprising units derived from ethylene having: a) a Melt Index of from 0.05 to 20 g/10 min; b) at least 10 per 1000 C-atoms of short chain branches, containing five carbon atoms or less, and less than 3.5 mol %, of units derived from a copolymerizable ethylenically unsaturated ester, c) a density of from 0.90 to 0.94 g/cm3, preferably 0.91 to 0.935 g/cm3, especially 0.92 to 0.93 g/cm3, and d) a relaxation time as described herein of at least 10 s. The polymer may be used for stretch hood film, preferably as a blown film coextruded tube comprising: a) a core of the above polymer; and b) a skin layer, on each side of the core which may be of the same or different composition, comprising at least 60 wt % of an LLDPE having density of 0.91 to 0.94 g/cm3.
    Type: Application
    Filed: July 3, 2008
    Publication date: October 30, 2008
    Inventors: Stefan Berth Ohlsson, Bart Lauwers, Jan C. Donck, Jef Vaes
  • Patent number: 7411026
    Abstract: Polymers comprising units derived from ethylene, said polymer having: a) a Melt Index of from 0.05 to 20 g/10 min. as determined by ASTM-1238 Condition E; b) at least 10 per 1000 C-atoms of short chain branches, containing five carbon atoms or less, as determined by C13 NMR, and less than 3.5 mol %, of units derived from a copolymerizable ethylenically unsaturated ester; c) a density of from 0.90 to 0.94 g/cm3, preferably 0.91 to 0.935 g/cm3, especially 0.92 to 0.93 g/cm3 as determined by ASTM D1505; and d) a relaxation time as described herein of at least 10 s. Such polymers can be obtained by free radical polymerization using a chain transfer agent that incorporates into the polymer chain such as an alpha-olefin, preferably propylene, as a chain transfer agent, preferably in a tubular reactor under circumstances to favor LCB formation in a down stream part of the tubular reactor.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: August 12, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Stefan Bertil Ohlsson, Bart Lauwers, Jan C. Donck, Jef Vaes
  • Publication number: 20060188678
    Abstract: An improved multi-layer film and packaging, including heavy duty sacks made therefrom having improved properties that permit processing on high speed bagging/Form Fill-Seal equipment are disclosed. The multi-layer films of the invention include a mLLDPE-containing skin layer and a core layer that includes both HDPE and mLLDPE.
    Type: Application
    Filed: February 21, 2005
    Publication date: August 24, 2006
    Inventors: Stefan Ohlsson, Bart Lauwers
  • Publication number: 20050037219
    Abstract: The invention relates to a polymer comprising units derived from ethylene, said polymer having: a) a Melt Index of from 0.05 to 20 g/10 min as determined by ASTM-1238 Condition E; b) at least 10 per 1000 C-atoms of short chain branches, containing five carbon atoms or less, as determined by C13 NMR, and less than 3.5 mol %, of units derived from a copolymerizable ethylenically unsaturated ester, c) a density of from 0.90 to 0.94 g/cm3, preferably 0.91 to 0.935 g/cm3, especially 0.92 to 0.93 g/cm3 as determined by ASTM D1505, and d) a relaxation time as described herein of at least 10 s. Such polymers are obtainable by polymerization by free radical polymerization using a chain transfer agent that incorporates into the polymer chain such as an alpha-olefin, preferably propylene, as a chain transfer agent, preferably in a tubular reactor under circumstances to favor LCB formation in a down stream part of the tubular reactor.
    Type: Application
    Filed: July 28, 2004
    Publication date: February 17, 2005
    Inventors: Stefan Ohlsson, Bart Lauwers, Jan Donck, Jef Vaes