Patents by Inventor Leo E. Manzer

Leo E. Manzer 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).

  • Publication number: 20040015026
    Abstract: The present invention relates to a process for the preparation of para-xylene from trimethylpentane.
    Type: Application
    Filed: June 3, 2003
    Publication date: January 22, 2004
    Inventors: Leo E. Manzer, Kostantinos Kourtakis, Norman Herron, Eugene M. McCarron, Paul D. VerNooy
  • Patent number: 6649776
    Abstract: Alpha-methylenelactones are produced from butyrolactone and valerolactone by the addition of formaldehyde in a supercritical fluid in the presence of a catalyst and a phase transfer agent.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: November 18, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Leo E. Manzer, Keith W. Hutchenson
  • Patent number: 6624337
    Abstract: A process is disclosed for producing perfluoroolefins of the formula CF(R1f)═CF2, where R1f is F or CF3. The process involves (a) perfluorinating cyclobutanes of the formula where R2f is F or CF3, and where one R1 is H and the other R1 is H when R1f is F and is CH3 when R1f is CF3, by the Simons electrochemical fluorination process in an electrochemical cell in a solution of anhydrous liquid hydrogen fluoride under temperature and pressure conditions sufficient to replace all hydrogens in the cyclobutane of the above formula with fluorine; and (b) cracking the perfluorinated cyclobutane. A disclosed cracking involves contacting the perfluorinated cyclobutanes with carbon or a conductive metal, which is heated by induction heating to a temperature sufficient to crack the perfluorinated cyclobutanes.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: September 23, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Leo E. Manzer, Cynthia A. Lundgren
  • Patent number: 6617464
    Abstract: A process for producing 5-methylbutyrolactone from levulinic acid utilizing an optionally supported metal catalyst is described. The catalyst has both a hydrogenation and a ring-closing function.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: September 9, 2003
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Leo E. Manzer
  • Publication number: 20030166949
    Abstract: Alpha-methylenelactone is produced from butyrolactone and valerolactone by the addition of formaldehyde in a supercritical fluid.
    Type: Application
    Filed: January 7, 2003
    Publication date: September 4, 2003
    Inventors: Leo E. Manzer, Keith W. Hutchenson
  • Publication number: 20030158425
    Abstract: Alpha-methylenelactones are produced from butyrolactone and valerolactone by the addition of formaldehyde in a supercritical fluid in the presence of a catalyst and a phase transfer agent.
    Type: Application
    Filed: January 7, 2003
    Publication date: August 21, 2003
    Inventors: Leo E. Manzer, Keith W. Hutchenson
  • Patent number: 6602921
    Abstract: A Fischer-Tropsch process for producing hydrocarbons, comprising contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons, wherein the catalyst comprises at least one catalytically active metal selected from the group consisting of cobalt, iron, nickel and ruthenium and combinations thereof, a catalyst support, and silver. The catalyst may include a promoter. A preferred catalyst comprises cobalt, platinum and/or ruthenium and/or rhenium, and silver supported on a support selected from the group consisting of Al2O3, ZrO2, sulfated ZrO2, WO3—ZrO2, MCM-41, H-Beta, Sylopol SiO2, AlF3, fluorided Al2O3, bentonite, zeolite, TiO2, and SiO2—Al2O3, molecular sieves, and combinations thereof.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: August 5, 2003
    Assignee: ConocoPhillips Company
    Inventors: Leo E. Manzer, Stephan Schwarz, Sergej Maslov
  • Patent number: 6600081
    Abstract: The present invention relates to a process for the preparation of para-xylene from trimethylpentane.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: July 29, 2003
    Inventors: Leo E. Manzer, Kostantinos Kourtakis, Norman Herron, Eugene M. McCarron, Paul D. Ver Nooy
  • Publication number: 20030119922
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process preferably includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Application
    Filed: December 3, 2002
    Publication date: June 26, 2003
    Inventors: Wenchun Chao, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian
  • Publication number: 20030065043
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least a Fischer-Tropsch metal and a promoter selected from the group consisting of molybdenum, tin, gallium, and zinc. The Fischer-Tropsch metal preferably includes cobalt. The catalyst may also include a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, silica-alumina, aluminum fluoride, and fluorided aluminas.
    Type: Application
    Filed: August 29, 2002
    Publication date: April 3, 2003
    Applicant: Conoco Inc.
    Inventors: Olga P. Ionkina, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian
  • Publication number: 20030055270
    Abstract: A process for producing 5-methylbutyrolactone from levulinic acid utilizing an optionally supported metal catalyst is described. The catalyst has both a hydrogenation and a ring-closing function.
    Type: Application
    Filed: March 15, 2002
    Publication date: March 20, 2003
    Inventor: Leo E. Manzer
  • Publication number: 20030055271
    Abstract: Alcohols are catalytically oxidized to aldehydes, in particular to benzaldehyde and diformylfuran, which are useful as intermediates for a multiplicity of purposes. The invention also relates to the polymerization of the dialdehyde and to the decarbonylation of the dialdehyde to furan.
    Type: Application
    Filed: August 14, 2002
    Publication date: March 20, 2003
    Inventors: Vladimir Grushin, Walter Partenheimer, Leo E. Manzer
  • Publication number: 20030032849
    Abstract: A chromium catalyst is disclosed for use in dehydrogenation and dehydrocyclization processes.
    Type: Application
    Filed: August 23, 2002
    Publication date: February 13, 2003
    Inventors: Kostantinos Kourtakis, Leo E. Manzer
  • Publication number: 20030023126
    Abstract: A gel composition substantially contained within the pores of a solid material is disclosed for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes.
    Type: Application
    Filed: January 10, 2001
    Publication date: January 30, 2003
    Inventors: Kostantinos Kourtakis, Leo E. Manzer
  • Patent number: 6489371
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process preferably includes at least cobalt, rhenium, and a promoter selected from the group including boron, phosphorus, potassium, manganese, and vanadium. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: December 3, 2002
    Assignee: Conoco Inc.
    Inventors: Wenchun Chao, Kamel M. Makar, Leo E. Manzer, Munirpallam A. Subramanian
  • Publication number: 20020173555
    Abstract: A process is disclosed for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons. In accordance with this invention, the catalyst used in the process includes at least a Fischer-Tropsch metal and boron. The Fischer-Tropsch metal preferably includes cobalt and optionally ruthenium or platinum. The catalyst may also comprise a support material selected from the group including silica, titania, titania/alumina, zirconia, alumina, aluminum fluoride, and fluorided aluminas.
    Type: Application
    Filed: January 14, 2002
    Publication date: November 21, 2002
    Applicant: Conoco Inc.
    Inventors: Olga Ionkina, Wenchun Chao, Munirpallam A. Subramanian, Leo E. Manzer, Kamel M. Makar, Ajoy P. Raje
  • Patent number: 6476085
    Abstract: This invention provides a process for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons, and uses a catalyst including (a) at least one catalytic metal for Fischer-Tropsch reactions (e.g., iron, cobalt, nickel and/or ruthenium) and (b) a non-layered mesoporous support which exhibits an X-ray diffraction after calcination that has at least one peak at a d-spacing of greater than 18 Ångstrom units.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: November 5, 2002
    Assignee: Conoco Inc.
    Inventors: Leo E. Manzer, Stephan Schwarz
  • Patent number: 6475950
    Abstract: A chromium catalyst is disclosed for use in dehydrogenation and dehydrocyclization processes.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: November 5, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kostantinos Kourtakis, Leo E. Manzer
  • Publication number: 20020052289
    Abstract: This invention provides a process for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at conversion-promoting conditions effective to produce an effluent stream comprising hydrocarbons, and uses a catalyst including (a) at least one catalytic metal for Fischer-Tropsch reactions (e.g., iron, cobalt, nickel and/or ruthenium) and (b) a non-layered mesoporous support which exhibits an X-ray diffraction after calcination that has at least one peak at a d-spacing of greater than 18 Ångstrom units.
    Type: Application
    Filed: November 16, 2001
    Publication date: May 2, 2002
    Inventors: Leo E. Manzer, Stephan Schwarz
  • Publication number: 20020052531
    Abstract: Supported bis(phosphorus) ligands are disclosed for use in hydroformylation reactions, including the hydroformylation of olefins. Catalysts are formed when the ligands are complexed with a catalytically active metal (e.g., rhodium or iridium).
    Type: Application
    Filed: February 16, 2001
    Publication date: May 2, 2002
    Inventors: Emilio E. Bunel, Patrick M. Burke, Joy D. Druliner, Leo E. Manzer, Kenneth G. Moloy, Manxue Wang