Patents by Inventor Steven J. Secora

Steven J. Secora 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).

  • Olefin polymerization processes and products thereof
    Publication number: 20040132929
    Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymers and ultra high molecular weight ethylene copolymers. Catalyst systems used are selected from the group consisting of inorganic oxide supported titanium-containing catalyst systems, inorganic oxide supported organo-zirconium catalyst systems and inorganic oxide supported organo-hafnium catalyst systems.
    Type: Application
    Filed: October 21, 2003
    Publication date: July 8, 2004
    Inventors: Joel L. Martin, Joseph J. Bergmeister, Eric T. Hsieh, Max P. McDaniel, Elizabeth A. Benham, Steven J. Secora
  • Olefin polymerization process
    Publication number: 20040087745
    Abstract: A copolymer of ethylene and a higher alpha-olefin having broadened melt processing windows and reduced melt fracture can be produced using a chromium-containing catalyst system and a trialkyl boron cocatalyst. The polymerization process must be carefully controlled to produce a copolymer resin that easily can be made into articles of manufacture.
    Type: Application
    Filed: June 26, 2003
    Publication date: May 6, 2004
    Applicant: Phillips Petroleum Company
    Inventors: Ashish M. Sukhadia, Elizabeth A. Benham, Joseph J. Bergmeister, Rex L. Bobsein, Gerhard K. Guenther, Eric T. Hsieh, Max P. McDaniel, Steven J. Secora, Joseph S. Shveima, John D. Stewart
  • Process and apparatus for controlling molecular weight distribution and short chain branching for olefin polymers
    Publication number: 20040059070
    Abstract: An olefin polymerization process and apparatus produce, in a single reactor, a polymer with a broad molecular weight distribution and short chain branching concentrated in the high molecular weight portion of the polymer product. A molecular weight lever, such as hydrogen, is pulsed out of phase with a short chain branching lever, such as 1-hexene, to produce a polymer product having desirable toughness characteristics and improved processability.
    Type: Application
    Filed: May 20, 2003
    Publication date: March 25, 2004
    Inventors: William M. Whitte, Steven J. Secora, Rebecca L. Jones
  • process that produces polymers
    Publication number: 20040024160
    Abstract: A process comprising polymerizing ethylene, or polymerizing ethylene and at least one other olefin, to produce a polymer is provided.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 5, 2004
    Applicant: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Gerhard Guenther, Elizabeth A. Benham, Max McDaniel
  • Polymerization process
    Patent number: 6657023
    Abstract: Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a twice-aged catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. Novel ethylene copolymers also are produced.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: December 2, 2003
    Assignee: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Gerhard K. Guenther, Elizabeth A. Benham, Max P. McDaniel
  • Olefin polymerization processes and products thereof
    Patent number: 6657034
    Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymers and ultra high molecular weight ethylene copolymers. Catalyst systems used are selected from the group consisting of inorganic oxide supported titanium-containing catalyst systems, inorganic oxide supported organo-zirconium catalyst systems and inorganic oxide supported organo-hafnium catalyst systems.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: December 2, 2003
    Assignee: Phillips Petroleum Company
    Inventors: Joel L. Martin, Joseph J. Bergmeister, Eric T. Hsieh, Max P. McDaniel, Elizabeth A. Benham, Steven J. Secora
  • Process that produces polymers
    Patent number: 6642324
    Abstract: A process comprising polymerizing ethylene, or polymerizing ethylene and at least one other olefin, to produce a polymer is provided.
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: November 4, 2003
    Assignee: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Gerhard Guenther, Elizabeth A. Benham, Max P. McDaniel
  • Olefin polymers, method of making, and use thereof
    Publication number: 20030199648
    Abstract: The present invention is directed to homo-polymers and copolymers of mono-1-olefins, a method of making such polymers, and uses of such polymers. Polymers of the present invention are formed by contacting at least one mono-1-olefin having from 2 to about 20 carbon atoms per molecule and at least one mono-1-olefin co-monomer having from 2 to about 10 carbon atoms per molecule in a reaction zone under polymerization conditions in the presence of a hydrocarbon diluent, a catalyst system, and a cocatalyst. The catalyst system of the present invention comprises a chromium source on an aluminophosphate support which has a phosphorous to aluminum mole ratio of less than about 0.3. Further, the catalyst system is treated with less than about 7 weight percent fluoride based on the weight of the support and is calcined. Cocatalyst are selected from trialkylboron compounds, triarylboron compounds, alkylaluminum compounds, and combinations thereof.
    Type: Application
    Filed: February 24, 2003
    Publication date: October 23, 2003
    Inventors: Max P. McDaniel, Elizabeth A. Benham, Al R. Wolfe, Paul J. DesLauriers, Pamela L. Meager, William R. Coutant, David C. Rohlfing, Steven J. Secora
  • Olefin polymerization process
    Patent number: 6617403
    Abstract: A copolymer of ethylene and a higher alpha-olefin having broadened melt processing windows and reduced melt fracture can be produced using a chromium-containing catalyst system and a trialkyl boron cocatalyst. The polymerization process must be carefully controlled to produce a copolymer resin that easily can be made into articles of manufacture.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: September 9, 2003
    Assignee: Phillips Petroleum Company
    Inventors: Ashish M. Sukhadia, Elizabeth A. Benham, Joseph J. Bergmeister, Rex L. Bobsein, Gerhard K. Guenther, Eric T. Hsieh, Max P. McDaniel, Steven J. Secora, Joseph S. Shveima, John D. Stewart
  • Process to produce polymers
    Publication number: 20030134065
    Abstract: A process to produce ethylene polymers is provided. Particularly, a process to produce ethylene polymers having a broad molecular weight distribution is provided. More particularly, a process to produce ethylene polymers that have low formation of smoke and odor during blow molding is provided.
    Type: Application
    Filed: January 31, 2003
    Publication date: July 17, 2003
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Elizabeth A. Benham, Max P. McDaniel
  • Process to produce polymers
    Patent number: 6569960
    Abstract: A process to produce ethylene polymers is provided. Particularly, a process to produce ethylene polymers having a broad molecular weight distribution is provided. More particularly, a process to produce ethylene polymers that have low formation of smoke and odor during blow molding is provided.
    Type: Grant
    Filed: July 27, 1999
    Date of Patent: May 27, 2003
    Assignee: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Elizabeth A. Benham, Max P. McDaniel
  • PROCESS TO PRODUCE POLYMERS
    Publication number: 20020098306
    Abstract: A process to produce ethylene polymers is provided. Particularly, a process to produce ethylene polymers having a broad molecular weight distribution is provided. More particularly, a process to produce ethylene polymers that have low formation of smoke and odor during blow molding is provided.
    Type: Application
    Filed: July 27, 1999
    Publication date: July 25, 2002
    Inventors: JOSEPH J. BERGMEISTER, STEVEN J. SECORA, ELIZABETH A. BENHAM, MAX P. MCDANIEL
  • Olefin polymerization processes and products thereof
    Publication number: 20020035228
    Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymers and ultra high molecular weight ethylene copolymers. Catalyst systems used are selected from the group consisting of inorganic oxide supported titanium-containing catalyst systems, inorganic oxide supported organo-zirconium catalyst systems and inorganic oxide supported organo-hafnium catalyst systems.
    Type: Application
    Filed: September 26, 2001
    Publication date: March 21, 2002
    Applicant: Phillips Petroleum Company
    Inventors: Joel L. Martin, Joseph J. Bergmeister, Eric T. Hsieh, Max P. McDaniel, Elizabeth A. Benham, Steven J. Secora
  • Olefin polymerization process
    Publication number: 20020028891
    Abstract: A copolymer of ethylene and a higher alpha-olefin having broadened melt processing windows and reduced melt fracture can be produced using a chromium-containing catalyst system and a trialkyl boron cocatalyst. The polymerization process must be carefully controlled to produce a copolymer resin that easily can be made into articles of manufacture.
    Type: Application
    Filed: August 20, 2001
    Publication date: March 7, 2002
    Applicant: Phillips Petroleum Company
    Inventors: Ashish M. Sukhadia, Elizabeth A. Benham, Joseph J. Bergmeister, Rex L. Bobsein, Gerhard K. Guenther, Eric T. Hsieh, Max P. McDaniel, Steven J. Secora, Joseph S. Shveima, John D. Stewart
  • Olefin polymerization processes and products thereof
    Patent number: 6329476
    Abstract: A novel loop/slurry olefin polymerization process is provided which produces ultra high molecular weight ethylene homopolymers and ultra high molecular weight ethylene copolymers. Catalyst systems used are selected from the group consisting of inorganic oxide supported titanium-containing catalyst systems, inorganic oxide supported organo-zirconium catalyst systems and inorganic oxide supported organo-hafnium catalyst systems.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: December 11, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Joel L. Martin, Joseph J. Bergmeister, Eric T. Hsieh, Max P. McDaniel, Elizabeth A. Benham, Steven J. Secora
  • Polymerization process
    Publication number: 20010007894
    Abstract: Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a twice-aged catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. Novel ethylene copolymers also are produced.
    Type: Application
    Filed: January 31, 2001
    Publication date: July 12, 2001
    Applicant: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Gerhard K. Guenther, Elizabeth A. Benham, Max P. McDaniel
  • Process that produces polymers
    Publication number: 20010004663
    Abstract: A process comprising polymerizing ethylene, or polymerizing ethylene and at least one other olefin, to produce a polymer is provided.
    Type: Application
    Filed: January 31, 2001
    Publication date: June 21, 2001
    Applicant: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Gerhard Guenther, Elizabeth A. Benham, Max McDaniel
  • Polymerization process
    Patent number: 6204346
    Abstract: Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a twice-aged catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. Novel ethylene copolymers also are produced.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 20, 2001
    Assignee: Phillips Petroleum Co.
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Gerhard K. Guenther, Elizabeth A. Benham, Max P. McDaniel
  • Process that produces polymers
    Patent number: 6201077
    Abstract: A process comprising polymerizing ethylene, or polymerizing ethylene and at least one other olefin, to produce a polymer is provided.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: March 13, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Steven J. Secora, Gerhard Guenther, Elizabeth A. Benham, Max P. McDaniel
  • Polymerization process
    Patent number: 6174981
    Abstract: Polymerization processes for ethylene and at least one mono-1-olefin comonomer having from about three to eight carbon atoms per molecule in the presence of a catalyst system comprising chromium supported on a silica-titania support and a trialkylboron compound is provided. Novel ethylene copolymers also are produced.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: January 16, 2001
    Assignee: Phillips Petroleum Company
    Inventors: Joseph J. Bergmeister, Al R. Wolfe, Steven J. Secora, Elizabeth A. Benham, William R. Coutant, Max P. McDaniel