Patents by Inventor Lars-Erik Ahlstrand

Lars-Erik Ahlstrand 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).

  • Patent number: 8492455
    Abstract: The present invention relates to a polyolefin composition comprising: a) an olefin homo- or copolymer (A), and b) activated carbon (B) as a taste and/or odor reducing agent, to the use of such a polyolefin composition, and to a pipe material and pipe having reduced taste and/or odor development comprising the above polyolefin composition.
    Type: Grant
    Filed: November 22, 2007
    Date of Patent: July 23, 2013
    Assignee: Borealis Technology Oy
    Inventors: Lars-Erik Ahlstrand, Perry Nylander, Per-Ola Hagstrand
  • Patent number: 8367763
    Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower average molecular weight than fraction (B); (ii) the base resin has a density of 940 to 947 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.5 g/10 min; and (iv) the polyethylene composition has an SHI(2.7/210) of 10 to 49. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: February 5, 2013
    Assignee: Borealis Technology Oy
    Inventors: Mats Bäckman, Lars-Erik Ahlstrand, Per-Ola Hagstrand, Magnus Palmlöf
  • Patent number: 8088866
    Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower weight average molecular weight than fraction (B); (ii) the base resin has a density of 932 to 938 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.6 g/10 min; and (iv) the polyethylene composition has a shear stress ?2.7 kPa of 85 to 230 kPas. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: January 3, 2012
    Assignee: Borealis Technology OY
    Inventors: Mats Bäckman, Lars-Erik Ahlstrand, Per-Ola Hagstrand, Magnus Palmlof
  • Patent number: 7893132
    Abstract: The present invention in a first embodiment relates to a conduit or automotive wire consisting of an inner conductor core surrounded by a flame retardant layer made of a polymer composition in a continuous process which composition comprises (A) an olefin homo- and/or copolymer, (B) a silicone-group containing compound, and (C) an inorganic filler, wherein the ratio of the MFR2 measured under a load of 2.16 kg and at a temperature of 190° C. of component (A) to the MFR2 measured under a load of 2.16 kg and at a temperature of 190° C. of the composition is higher than 3.5, and the wire has a length of at least 100 m. In a second embodiment, the present invention relates to a power or communications cable or wire comprising a flame retardant layer made of a polymer composition comprising (A) an olefin homo- and/or copolymer, (B) a silicone-group containing compound, and (C) an inorganic filler, wherein the ratio of the MFR2 measured under a load of 2.16 kg and at a temperature of 190° C.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: February 22, 2011
    Assignee: Borealis Technology Oy
    Inventors: Bernt-{hacek over (A)}ke Sultan, Jonas Jungkvist, Urban Andreason, Lars-Erik Ahlstrand
  • Publication number: 20110003933
    Abstract: The present invention relates to a polyolefin composition comprising: a) an olefin homo- or copolymer (A), and b) activated carbon (B) as a taste and/or odour reducing agent, to the use of such a polyolefin composition, and to a pipe material and pipe having reduced taste and/or odour development comprising the above polyolefin composition.
    Type: Application
    Filed: November 22, 2007
    Publication date: January 6, 2011
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Lars-Erik Ahlstrand, Perry Nylander, Per-Ola Hagstrand
  • Publication number: 20100178443
    Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower average molecular weight than fraction (B); (ii) the base resin has a density of 940 to 947 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.5 g/10 min; and (iv) the polyethylene composition has an SHI(2.7/210) of 10 to 49. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.
    Type: Application
    Filed: September 28, 2007
    Publication date: July 15, 2010
    Inventors: Mats Bäckman, Lars-Erik Ahlstrand, Per-Ola Hagstrand, Magnus Palmlöf
  • Publication number: 20100040819
    Abstract: The present invention relates to a polyethylene composition comprising a base resin which comprises (a) an ethylene homo- or copolymer fraction (A); and (b) an ethylene homo- or copolymer fraction (B), wherein (i) fraction (A) has a lower weight average molecular weight than fraction (B); (ii) the base resin has a density of 932 to 938 kg/m3; (iii) the polyethylene composition has an MFR5 of 0.1 to 0.6 g/10 min; and (iv) the polyethylene composition has a shear stress ?2.7 kPa of 85 to 230 kPas. Furthermore, the present invention relates to an article, preferably a pipe comprising said composition and to the use of said composition for the production of an article, preferably a pipe.
    Type: Application
    Filed: September 28, 2007
    Publication date: February 18, 2010
    Inventors: Mats Backman, Lars-Erik Ahlstrand, Per-Ola Hagstrand, Magnus Palmlof
  • Publication number: 20080188589
    Abstract: The present invention in a first embodiment relates to a conduit or automotive wire consisting of an inner conductor core surrounded by a flame retardant layer made of a polymer composition in a continuous process which composition comprises (A) an olefin homo- and/or copolymer, (B) a silicone-group containing compound, and (C) an inorganic filler, wherein the ratio of the MFR2 measured under a load of 2.16 kg and at a temperature of 190° C. of component (A) to the MFR2 measured under a load of 2.16 kg and at a temperature of 190° C. of the composition is higher than 3.5, and the wire has a length of at least 100 m. In a second embodiment, the present invention relates to a power or communications cable or wire comprising a flame retardant layer made of a polymer composition comprising (A) an olefin homo- and/or copolymer, (B) a silicone-group containing compound, and (C) an inorganic filler, wherein the ratio of the MFR2 measured under a load of 2.16 kg and at a temperature of 190° C.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 7, 2008
    Inventors: Bernt-Ake Sultan, Jonas Jungkvist, Urban Andreason, Lars-Erik Ahlstrand
  • Publication number: 20030149162
    Abstract: HDPE compositions comprising a bimodal polymer and a nucleating agent, for production of pipes having increased pressure resistance, and the use of such compositions in the production of pipes.
    Type: Application
    Filed: February 12, 2003
    Publication date: August 7, 2003
    Inventor: Lars Erik Ahlstrand