Patents by Inventor David O. Marler

David O. Marler 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).

  • Patent number: 10883088
    Abstract: Oxygenases and methods of biologically upgrading hydrocarbon streams, such as crude oil, using oxygenases are provided herein. The oxygenases can be used to remove impurities such as metals, heteroatoms, or asphaltenes from a hydrocarbon stream. In some cases, the oxygenases can be chemically or genetically modified and can be used in different locations such as petroleum wells, pipes, reservoirs, tanks and/or reactors.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: January 5, 2021
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Zarath M. Summers, David O. Marler, Jay B. Patel, Katherine G. Landuyt
  • Publication number: 20190276952
    Abstract: The present disclosure relates to methods for using functional molecules and other structural carbon-based molecules with rigid backbones and kinked segments to alter the interactions between molecules, and consequently improve/modify the properties of materials. In particular, the disclosure provides methods for using functional molecules and other structural carbon-based molecules with rigid backbones and kinked segments as (1) precursors for carbon fiber, (2) “molecular agents” to separate and/or link ?-? stacked aromatic systems, 3) stabilizers in composite materials to achieve better blending of matrix with fiber reinforcement, and/or (4) one of the components in carbon fibers to achieve better mechanical properties.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 12, 2019
    Inventors: David O. Marler, Srinivasan Rajagopalan, Dhaval Bhandari, Huaxing Zhou, M. G. Finn
  • Publication number: 20190177703
    Abstract: Oxygenases and methods of biologically upgrading hydrocarbon streams, such as crude oil, using oxygenases are provided herein. The oxygenases can be used to remove impurities such as metals, heteroatoms, or asphaltenes from a hydrocarbon stream. In some cases, the oxygenases can be chemically or genetically modified and can be used in different locations such as petroleum wells, pipes, reservoirs, tanks and/or reactors.
    Type: Application
    Filed: November 12, 2018
    Publication date: June 13, 2019
    Inventors: Zarath M. Summers, David O. Marler, Jay B. Patel, Katherine G. Landuyt
  • Publication number: 20190178066
    Abstract: Dioxygenases and methods of biologically upgrading hydrocarbon streams, such as crude oil, using dioxygenases are provided herein. The dioxygenases can be used to remove impurities such as metals, heteroatoms, or asphaltenes from a hydrocarbon stream. In some cases, the dioxygenases can be chemically or genetically modified and can be used in different locations such as petroleum wells, pipes, reservoirs, tanks and/or reactors.
    Type: Application
    Filed: November 12, 2018
    Publication date: June 13, 2019
    Inventors: Zarath M. Summers, David O. Marler, Jay B. Patel, Katherine G. Landuyt
  • Publication number: 20110152062
    Abstract: Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50° C. to 200° C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material, The resulting catalytic particles can be produced in an amount of about ca. 3 g to 300 g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 23, 2011
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: William A. Wachter, Brenda A. Raich, Theodore E. Datz, David O. Marler, Nicholas Rollman, Jeffrey T. Elks, Gordon F. Stuntz
  • Patent number: 7867937
    Abstract: Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50° C. to 200° C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material. The resulting catalytic particles can be produced in an amount of about ca. 3 g to 300 g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: January 11, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: William A. Wachter, Jeffrey T. Elks, Brenda A. Raich, Theodore E. Datz, Mary T. Van Nostrand, Gordon F. Stuntz, David O. Marler, Nicholas Rollman
  • Patent number: 7816573
    Abstract: The invention relates to a process for converting hydrocarbons with a catalyst comprising a crystalline molecular sieve composition which is obtainable by crystallizing a pre-formed extrudate mixture in a reactor and, during crystallization, removing excess alkali metal hydroxide from the pre-formed extrudate. The pre-formed extrudate mixture comprises at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X. The reaction mixture has the following mole composition: Y:X2=10 to infinity; OH?:Y=0.001 to 2; and M+:Y=0.001 to 2; wherein M is an alkali metal. The amount of water in the mixture is at least sufficient to permit extrusion of said reaction mixture.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: October 19, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Wenyih Frank Lai, Robert Ellis Kay, Christine N. Elia, Frederick Y. Lo, David O. Marler
  • Patent number: 7419928
    Abstract: A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: September 2, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Publication number: 20080146435
    Abstract: Catalysts for experimentation are produced having a controlled matrix pore structure. The manufacturing process utilizes tape casting in the drying procedure in which a catalyst slurry is cast on a substrate and dried at a temperature of between about 50° C. to 200° C. for a period of time of about 0.1 to 1.0 hour. The dried catalyst particles can be removed from the substrate by several techniques, including scraping, burning, and deforming the substrate material. The resulting catalytic particles can be produced in an amount of about ca. 3g to 300g from slurries with volumes between 5 cc to 500 cc, which are suitable for small scale FCC reactors and for high throughput experimentation.
    Type: Application
    Filed: December 11, 2007
    Publication date: June 19, 2008
    Inventors: William A. Wachter, Jeffrey T. Elks, Brenda A. Raich, Theodore E. Datz, Mary T. Van Nostrand, Gordon F. Stuntz, David O. Marler, Nicholas Rollman
  • Patent number: 7361619
    Abstract: Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: April 22, 2008
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Publication number: 20070191659
    Abstract: The invention relates to a crystalline molecular sieve composition which is obtainable by crystallizing a pre-formed extrudate mixture in a reactor and, during crystallization, removing excess alkali metal hydroxide from the pre-formed extrudate. The pre-formed extrudate mixture comprises at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X. The reaction mixture has the following mole composition: Y:X2=10 to infinity; OH?:Y=0.001 to 2; and M+:Y=0.001 to 2; wherein M is an alkali metal. The amount of water in the mixture is at least sufficient to permit extrusion of said reaction mixture.
    Type: Application
    Filed: January 26, 2007
    Publication date: August 16, 2007
    Inventors: Wenyih Frank Lai, Robert Ellis Kay, Christine N. Elia, Frederick Y. Lo, David O. Marler
  • Publication number: 20040204504
    Abstract: A process for enhancing the activity of a catalyst metal particulate for hydrogenation reactions comprising calcining the particulate in an oxidant-containing atmosphere to partially oxidize it thereby forming a porous layer of oxides thereon, treating with an solution capable of oxidizing the calcined metal particulate and comprising a compound of a hydrogenation catalyst metal to where said metal particulate has absorbed a volume of solution equal to at least about 10% of its calculated pore volume and activating it by treatment with a hydrogen-containing gas at elevated temperatures thereby forming a dispersed active metal catalyst. Preferably, the treated particulate is calcined a second time under the same conditions as the first before final activation with a hydrogen-containing gas. The metal particulate is preferably sized after each calcination and any agglomerates larger than 250 microns are comminuted to a desired size.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Publication number: 20040204505
    Abstract: Dispersed Active Metal catalyst for hydrogenation reactions is produced by treating a substantially catalytically inactive metal particulate with a solution capable of oxidizing the metal particulate and comprising of at least one compound of a hydrogenation catalyst metal thereby forming a layer of at least one of hydroxides and oxides thereon. The metal particulate is activated by treatment with a hydrogen-containing gas at elevated temperatures to form a porous layer of Dispersed Active Metal catalyst. Preferably, the treated metal particulate is dried prior to activation, and also preferably calcined in an oxidant-containing atmosphere prior to activation. The treatment solution may advantageously contain a compound of at least one promoter metal for the added catalyst metal. The porosity of the layer provides enhanced catalyst activity as well as improved methane selectivity in the Fischer-Tropsch process.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Inventors: Andrzej M. Malek, Stephen C. Leviness, Horacio M. Trevino, Weldon K. Bell, David O. Marler
  • Patent number: 6146520
    Abstract: A process for reducing the Mutagenicity Index and/or the PCA content of a lubricating oil extract by re-extracting a lubricating oil extract with a second extraction solvent, different from the first extraction solvent, to form a secondary raffinate and a secondary extract mix; separating the secondary raffinate from the secondary extract mix; and separating the secondary raffinate and the secondary extract from said second extraction solvent.
    Type: Grant
    Filed: April 2, 1997
    Date of Patent: November 14, 2000
    Assignee: Mobil Oil Corporation
    Inventors: Anagha Avinash Gupte, David O. Marler
  • Patent number: 6143261
    Abstract: MCM-56 and MCM-49 have been demonstrated to be effective catalysts for the reduction of nitrogen oxide (NO.sub.x) emissions in a net oxidizing environment such as Selective Catalytic Reduction or lean burn engine exhaust applications. MCM-56 and MCM-49 can be utilized as a component of a spherical or cylindrical catalyst particle or as a wash coat on a ceramic or metallic monolith. Optionally, a transition metal such as copper, can be added to the catalyst for improved activity.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: November 7, 2000
    Assignee: Exxon Research and Engineering Company
    Inventors: Daria N. Lissy, David O. Marler, John P. McWilliams, David S. Shihabi, Sanjay B. Sharma
  • Patent number: 5900520
    Abstract: Alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a paraffin alkylating agent under alkylation reaction conditions in the presence of catalyst comprising synthetic porous crystalline material characterized by an X-ray diffraction pattern including interplanar d-spacings at 12.36.+-.0.4, 11.03.+-.0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.07, and 3.42.+-.0.06 Angstroms.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: May 4, 1999
    Assignee: Mobil Oil Corporation
    Inventors: Dominick N. Mazzone, David O. Marler, Kathleen M. Keville, Larry A. Green
  • Patent number: 5780703
    Abstract: A process for converting at least one olefin and at least one isoparaffin to a diesel fuel blending component comprising the steps of contacting the olefin and the isoparaffin with a catalyst comprising an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIB metal to provide a diesel fuel. Process conditions can be varied to favor the formation of gasoline, distillate, lube range products or mixtures thereof.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: July 14, 1998
    Assignee: Mobil Oil Corporation
    Inventors: Clarence D. Chang, Stuart D. Hellring, David O. Marler, Jose G. Santiesteban, James C. Vartuli
  • Patent number: 5705724
    Abstract: A process is disclosed for the production of alkylaromatic compounds employing olefinic liquid from thermally or catalytically cracked plastics as alkylating agent. The process comprises contacting a feedstream comprising alkylatable aromatics and the olefinic liquid with acidic alkylation catalyst under alkylation conditions in an alkylation zone; and recovering an effluent stream comprising alkylaromatic compounds. The alkylation can be performed with the product of plastics pyrolysis or with non-degraded plastic feedstock in-situ with thermal/catalytic degradation of the plastic.
    Type: Grant
    Filed: October 26, 1995
    Date of Patent: January 6, 1998
    Assignee: Mobil Oil Corporation
    Inventors: Nick A. Collins, Larry A. Green, Anagha A. Gupte, David O. Marler, William J. Tracy, III
  • Patent number: 5639931
    Abstract: At least one olefin and at least one isoparaffin are converted to a diesel fuel blending component by contacting the olefin and the isoparaffin with a catalyst selected from MCM-22, MCM-36, MCM-49, and MCM-56 to provide a product containing a diesel fuel.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: June 17, 1997
    Assignee: Mobil Oil Corporation
    Inventors: Stuart D. Hellring, Albin Huss, Jr., Michael E. Landis, David O. Marler, Gerald J. Teitman, Hye Kyung C. Timken, Jeffrey C. Trewella
  • Patent number: 5624964
    Abstract: A process for integration of a steam reforming unit and a cogeneration power plant in which said steam reforming unit comprises two communicating fluid beds; the first fluid bed comprising a reformer containing catalyst and which is used to react steam and light hydrocarbons at conditions sufficient to produce a mixture comprising synthesis gas hydrogen, carbon monoxide, and carbon dioxide, the second fluid bed comprising a combustor-regenerator which receives spent catalyst from the first fluid bed and which provides heat to heat the catalyst and balance the reaction endotherm, by combusting fuel gas in direct contact with the catalyst producing hot flue gas; said cogeneration power plant comprises a gas turbine equipped with an air compressor and a combustor; said integration which comprises drawing off a portion of compressed air from the power plant gas turbine air compressor leaving remainder compressed air; introducing the drawn off compressed air to the combustor-regenerator; mixing the hot flue gas fr
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: April 29, 1997
    Assignee: Mobil Oil Corporation
    Inventors: Ronald J. Cimini, David O. Marler, Reuel Shinnar, Gerald J. Teitman