Patents by Inventor Umesh Karnik

Umesh Karnik 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).

  • Polymerization process using a dual shear mixing element
    Patent number: 6319996
    Abstract: A dual shear mixing element for use in a chemical reactor. The device may be used in processes where liquids of different temperatures need to be thoroughly mixed in a short period of time and solute must stay in solution. The present invention is particularly useful in the solution polymerization of polyolefins, especially in the medium pressure process for the preparation of linear low density polyethylene.
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: November 20, 2001
    Assignee: Nova Chemical (International) S.A.
    Inventors: Annette Lynn Burke, Edward Christopher Foy, John Iatrou, Umesh Karnik, Darwin Edward Kiel, Vaclav George Zboril
  • Mixing element for a chemical reactor
    Patent number: 6024483
    Abstract: A dual shear mixing element includes an auger and an impeller for use in a chemical reactor. The device may be used in processes where liquids of different temperatures need to be thoroughly mixed in a short period of time and solute must stay in solution. The present invention is particularly useful in the solution polymerization of polyolefins, especially in the medium pressure process for the preparation of linear low density polyethylene.
    Type: Grant
    Filed: March 26, 1998
    Date of Patent: February 15, 2000
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Annette Lynn Burke, Edward Christopher Foy, John Iatrou, Umesh Karnik, Darwin Edward Kiel, Vaclav George Zboril