Patents by Inventor G. J. Greenwood

G. J. Greenwood 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).

  • Oligomerization catalyst system and method of making and method of using such catalyst system in the oligomerization of olefins
    Patent number: 6384291
    Abstract: A method of preparing a catalyst system which comprises mixing a first solid material comprising at least one perfluoroalkylsulfonic acid salt with a second solid material comprising at least one silanol comprising hydroxy groups and silicon to form a gel comprising silica and the at least one perfluororalkylsulfonic acid salt, and contacting the gel with an acidic solution to convert at least a portion of the at least one perfluoroalkylsulfonic acid salt to at least one perfluoroalkylsulfonic acid is disclosed. Alternatively, a method of preparing a catalyst system which comprises mixing at least one perfluoroalkylsulfonic acid salt with silica gel to form a gel comprising silica and at least one perfluororalkylsulfonic acid salt, and contacting the gel with an acidic solution to convert at least a portion of the at least one perfluororalkylsulfonic acid salt to at least one perfluororalkylsulfonic acid is disclosed.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: May 7, 2002
    Assignee: Phillips Petroleum Company
    Inventors: G. J. Greenwood, Bruce B. Randolph
  • Oligomerization catalyst system and method of making and method of using such catalyst system in the oligomerization of olefins
    Publication number: 20010007914
    Abstract: A method of preparing a catalyst system which comprises mixing a first solid material comprising at least one perfluoroalkylsulfonic acid salt with a second solid material comprising at least one silanol comprising hydroxy groups and silicon to form a gel comprising silica and the at least one perfluororalkylsulfonic acid salt, and contacting the gel with an acidic solution to convert at least a portion of the at least one perfluoroalkylsulfonic acid salt to at least one perfluoroalkylsulfonic acid is disclosed.
    Type: Application
    Filed: March 2, 2001
    Publication date: July 12, 2001
    Applicant: Phillips Petroleum Company
    Inventors: G. J. Greenwood, Bruce B. Randolph
  • Oligomerization catalyst system and method of making and method of using such catalyst system in the oligomerization of olefins
    Patent number: 6228797
    Abstract: A method of preparing a catalyst system which comprises mixing a first solid material comprising at least one perfluoroalkylsulfonic acid salt with a second solid material comprising at least one silanol comprising hydroxy groups and silicon to form a gel comprising silica and the at least one perfluororalkylsulfonic acid salt, and contacting the gel with an acidic solution to convert at least a portion of the at least one perfluoroalkylsulfonic acid salt to at least one perfluoroalkylsulfonic acid is disclosed. Alternatively, a method of preparing a catalyst system which comprises mixing at least one perfluoroalkylsulfonic acid salt with silica gel to form a gel comprising silica and at least one perfluororalkylsulfonic acid salt, and contacting the gel with an acidic solution to convert at least a portion of the at least one perfluororalkylsulfonic acid salt to at least one perfluororalkylsulfonic acid is disclosed.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: May 8, 2001
    Assignee: Phillips Petroleum Company
    Inventors: G. J. Greenwood, Bruce B. Randolph