Patents by Inventor Iris Kuellmer

Iris Kuellmer 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).

  • Covalently fixed nonmetallocenes, process for preparing them and their use for the polymerization of olefins
    Patent number: 7157398
    Abstract: The invention relates to a method for producing special transition metal compounds, to novel transition metal compounds and to the use thereof for polymerizing olefins.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: January 2, 2007
    Assignee: Celanese Ventures GmbH
    Inventors: Jörg Schottek, Jörg Schulte, Tim Dickner, Iris Küllmer
  • Chemical compound, method for the production thereof and its use in catalyst systems for producing polyolefins
    Patent number: 7101940
    Abstract: The invention relates to a chemical compound of formula (I), wherein M1 represents an element selected from main groups II, III or IV of the periodic table of elements; x is equal to 1, 2, 3 or 4; y is equal to 2, 3 or 4, and; A represents a cation of main group V of the periodic table of elements; R1 is the same or different and represents a branched or unbranched linear or cyclic C1–C40 group that contains carbon; R2 is the same or different and represents a branched or unbranched linear or cyclic C1–C40 group that contains carbon; R3 represents a branched or unbranched linear or cyclic C1–C40 group that contains carbon, and; R4 represents a hydrogen atom; whereby R2 and R3 are always different from one another
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 5, 2006
    Assignee: Basell Polyolefine GmbH
    Inventors: Jörg Schottek, Heike Gregorius, David Fischer, Iris Kuellmer
  • Method for producing mono-organoboranes or di-organoboranes
    Patent number: 6600066
    Abstract: A novel process for preparing perhalogenated monoorganoboranes or diorganoboranes which makes it possible to obtain these compounds under conditions which can readily be implemented in the industry is described.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: July 29, 2003
    Assignee: Basell Polyolefine GmbH
    Inventors: Jörg Schottek, Patricia Becker, Iris Küllmer
  • Chemical compound, method for the production thereof and its use in catalyst systems for producing polyolefins
    Publication number: 20030013913
    Abstract: The invention relates to a chemical compound of formula (I), wherein M1 represents an element selected from main groups II, III or IV of the periodic table of elements; x is equal to 1, 2, 3 or 4; y is equal to 2, 3 or 4, and; A represents a cation of main group V of the periodic table of elements; R1 is the same or different and represents a branched or unbranched linear or cyclic C1-C40 group that contains carbon; R2 is the same or different and represents a branched or unbranched linear or cyclic C1-C40 group that contains carbon; R3 represents a branched or unbranched linear or cyclic C1-C40 group that contains carbon, and; R4 represents a hydrogen atom; whereby R2 and R3 are always different from one another.
    Type: Application
    Filed: June 24, 2002
    Publication date: January 16, 2003
    Inventors: Joerg Schottek, Heike Gregorius, David Fischer, Iris Kuellmer