Patents by Inventor Gregory Nikiforov

Gregory Nikiforov 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).

  • Catalysts for catalytic chain transfer
    Patent number: 8053541
    Abstract: Cobaloxime derivatives and methods of producing cobaloxime derivatives are disclosed herein. Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of the cobaloxime derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are also disclosed herein.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: November 8, 2011
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Gregory A. Nikiforov, Alexei A. Gridnev
  • CATALYSTS FOR CATALYTIC CHAIN TRANSFER
    Publication number: 20100160582
    Abstract: Cobaloxime derivatives and methods of producing cobaloxime derivatives are disclosed herein. Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of the cobaloxime derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are also disclosed herein.
    Type: Application
    Filed: March 2, 2010
    Publication date: June 24, 2010
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Gregory A. Nikiforov, Alexei A. Gridnev
  • Catalysts for catalytic chain transfer
    Patent number: 7714084
    Abstract: Cobaloxime derivatives and methods of producing cobaloxime derivatives are disclosed herein. Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of the cobaloxime derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are also disclosed herein.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: May 11, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Gregory A. Nikiforov, Alexei A. Gridnev
  • Catalysts for catalytic chain transfer
    Publication number: 20070155887
    Abstract: Cobaloxime derivatives and methods of producing cobaloxime derivatives are disclosed herein. Methods of producing decolorized homo- and co-polymers through polymerization of monomers in presence of the cobaloxime derivatives and decolorization of the produced polymer by exposing the polymer to a sorbent and, optionally, a solvent are also disclosed herein.
    Type: Application
    Filed: November 9, 2006
    Publication date: July 5, 2007
    Inventors: Gregory Nikiforov, Alexei Gridnev