Patents by Inventor Savini Udara Suduweli Kondage

Savini Udara Suduweli Kondage 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).

  • Self supported phosphinimine catalyst
    Patent number: 10336841
    Abstract: In some embodiments provided herein is a self-supported phosphinimine single site catalyst having a molar ratio of Al from the activator (MAO) to the active metal in the catalyst from 5:1 to 30:1. The catalyst is prepared by precipitating an emulsion of the activated catalyst from a perfluoroalkane continuous phase resulting in spherical catalyst particles having a diameter typically from 5 to 200 ?m.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 2, 2019
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Qinyan Wang, Savini Udara Suduweli Kondage, Bradley Wade Funk, Amy Marie Baltimore
  • Process for polymerization using dense and spherical ziegler-natta type catalyst
    Patent number: 9963526
    Abstract: Some embodiments herein disclose a process for producing an ethylene polymer or copolymer which contains less than 5 ppm titanium and has a bulk density, in granular form, of at least 22.5 lbs/ft3, using a spheroidal Ziegler-Natta type olefin polymerization catalyst having a particle size distribution characterized by a Dm*/Dn of less than 3.0 and comprising a titanium compound, an aluminum compound, and a spheroidal magnesium chloride support.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: May 8, 2018
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Qinyan Wang, Savini Udara Suduweli Kondage, Mark Kelly, Amy Marie Baltimore, Jessamyn Ross Logan, Tyler Craig
  • SELF SUPPORTED PHOSPHINIMINE CATALYST
    Publication number: 20170240673
    Abstract: In some embodiments provided herein is a self-supported phosphinimine single site catalyst having a molar ratio of Al from the activator (MAO) to the active metal in the catalyst from 5:1 to 30:1. The catalyst is prepared by precipitating an emulsion of the activated catalyst from a perfluoroalkane continuous phase resulting in spherical catalyst particles having a diameter typically from 5 to 200 ?m.
    Type: Application
    Filed: February 21, 2017
    Publication date: August 24, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Qinyan Wang, Savini Udara Suduweli Kondage, Bradley Wade Funk, Amy Marie Baltimore
  • PROCESS FOR POLYMERIZATION USING DENSE AND SPHERICAL ZIEGLER-NATTA TYPE CATALYST
    Publication number: 20160326282
    Abstract: Some embodiments herein disclose a process for producing an ethylene polymer or copolymer which contains less than 5 ppm titanium and has a bulk density, in granular form, of at least 22.5 lbs/ft3, using a spheroidal Ziegler-Natta type olefin polymerization catalyst having a particle size distribution characterized by a Dm*/Dn of less than 3.0 and comprising a titanium compound, an aluminum compound, and a spheroidal magnesium chloride support.
    Type: Application
    Filed: April 25, 2016
    Publication date: November 10, 2016
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Qinyan Wang, Savini Udara Suduweli Kondage, Mark Kelly, Amy Marie Baltimore, Jessamyn Ross Logan, Tyler Craig