Patents by Inventor Liangyou Fan

Liangyou Fan 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).

  • Amino phosphine
    Patent number: 8252956
    Abstract: A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: August 28, 2012
    Assignee: Nova Chemicals (International) S.A.
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • Amino phosphine
    Publication number: 20110257352
    Abstract: A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Application
    Filed: June 24, 2011
    Publication date: October 20, 2011
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • Amino phosphine
    Patent number: 7994363
    Abstract: A new P-N-P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: August 9, 2011
    Assignee: Nova Chemicals (International) S.A
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson
  • Amino phosphine
    Publication number: 20080242811
    Abstract: A new P—N—P ligand in which each phosphorus atom is bonded to two ortho-fluorine substituted phenyl groups is useful in ethylene oligomerizations. In combination with i) a source of chromium and ii) an activator such as methalumoxane; the ligand of this invention may be used to prepare an oligomer product that contains a mixture of hexenes and octenes. The hexenes and octenes produced with this ligand contain very low levels of internal olefins when produced under preferred reaction conditions.
    Type: Application
    Filed: March 20, 2008
    Publication date: October 2, 2008
    Inventors: Xiaoliang Gao, Charles Ashton Garret Carter, Liangyou Fan, Lee Douglas Henderson