Patents by Inventor Markku Vähteri

Markku Vähteri 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: 9017784
    Abstract: The present invention relates to a pipe made of a polyethylene composition comprising a polyethylene base resin, which comprises c. an ethylene copolymer as fraction (A), and d. an ethylene homo- or copolymer as fraction (B), with fraction (A) having a lower molecular weight than fraction (B), wherein the polyethylene base resin is obtainable in a polymerization process in which a single-site catalyst (SSC) is used in the polymerization of at least one of fractions (A) and (B), the base resin having (i) a density of below 940 kg/m3, and (ii) a MFR5 at 190° C./5.00 kg of at least 0.20 g/10 min, and the polyethylene composition having a time to failure of at least 250 h measured according to ISO 1167 at 95° C. and 4.3 MPa.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: April 28, 2015
    Assignee: Borealis Technology Oy
    Inventors: Magnus Palmlöf, Solveig Johansson, Markku Vähteri
  • Publication number: 20100055366
    Abstract: The present invention relates to a pipe made of a polyethylene composition comprising a polyethylene base resin, which comprises c. an ethylene copolymer as fraction (A), and d. an ethylene homo- or copolymer as fraction (B), with fraction (A) having a lower molecular weight than fraction (B), wherein the polyethylene base resin is obtainable in a polymerisation process in which a single-site catalyst (SSC) is used in the polymerisation of at least one of fractions (A) and (B), the base resin having (i) a density of below 940 kg/m, and (ii) a MFR5 at 190° C./5.00 kg of at least 0.20 g/10 min, and the polyethylene composition having a time to failure of at least 250 h measured according to ISO 1167 at 95° C. and 4.3 MPa.
    Type: Application
    Filed: November 21, 2007
    Publication date: March 4, 2010
    Applicant: BOREALIS TECHNOLOGY OY
    Inventors: Magnus Palmlöf, Solveig Johansson, Markku Vähteri