Patents by Inventor Lian Xiongdong

Lian Xiongdong 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).

  • Metallocenes and catalyst compositions derived therefrom
    Patent number: 9644047
    Abstract: This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having two indenyl ligands with identical substitution including, for example, cyclopropyl groups and substituted phenyl groups at the 2 and 4 positions of the catalyst, respectively, where the substituents are at the 3? and 5? positions of the phenyl groups.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: May 9, 2017
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jian Yang, Matthew W. Holtcamp, Garth R. Giesbrecht, Gregory S. Day, Jo Ann M. Canich, Lian Xiongdong
  • Metallocenes and Catalyst Compositions Derived Therefrom
    Publication number: 20150025206
    Abstract: This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having two indenyl ligands with identical substitution including, for example, cyclopropyl groups and substituted phenyl groups at the 2 and 4 positions of the catalyst, respectively, where the substituents are at the 3? and 5? positions of the phenyl groups.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 22, 2015
    Inventors: Jian Yang, Matthew W. Holtcamp, Garth R. Giesbrecht, Gregory S. Day, Jo Ann M. Canich, Lian Xiongdong