Patents by Inventor Holly Ann Severin

Holly Ann Severin 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).

  • Synthesis of magnesium dichloride support for the AST off-line ZN catalyst with a plug flow reactor (PFR)
    Patent number: 10647588
    Abstract: The various embodiments of the invention provide, a magnesium dichloride support and the magnesium titanium polymerization procatalyst made therefrom, and methods for making and using the same.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: May 12, 2020
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Peter Zoricak, Qinyan Wang, Holly Ann Severin, Mohamed Elamine Aiffa, Kevin Dickinson
  • Synthesis of Magnesium Dichloride Support For The AST Off-Line ZN Catalyst With a Plug Flow Reactor (PFR)
    Publication number: 20180327273
    Abstract: The various embodiments of the invention provide, a magnesium dichloride support and the magnesium titanium polymerization procatalyst made therefrom, and methods for making and using the same.
    Type: Application
    Filed: December 5, 2016
    Publication date: November 15, 2018
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Peter Zoricak, Qinyan Wang, Holly Ann Severin, Mohamed Elamine Aiffa, Kevin Dickinson
  • Ethylene Oligomerization With Mixed Ligands
    Publication number: 20170313634
    Abstract: The selective oligomerization of ethylene to produce a mixture comprising octene and hexene is conducted in the presence of a catalyst system comprising a source of chromium; two different P—N—P ligands and an activator. The phosphorus atoms of both ligands have ortho-fluoro phenyl substituents. The nitrogen atom of the first ligand has an isopropyl substituent. The nitrogen of the second ligand has a larger/bulkier hydrocarbyl substituent on the N atom. The hexene produced by the process of this invention has very high alpha selectivity.
    Type: Application
    Filed: November 28, 2014
    Publication date: November 2, 2017
    Applicant: NOVA Chemicals (International) S.A.
    Inventors: Stephen Brown, Charles Carter, Peter Zoricak, Xiaoliang Gao, Holly Ann Severin