Patents Assigned to BP Amoco Corporation
  • Patent number: 6454274
    Abstract: A joint assembly for joining a ceramic membrane of tubular form to a tube sheet used in supporting the ceramic membrane within a reactor. The ceramic membrane is received within a fixture connected to the tube sheet and a follower, extending into the fixture, exerts a force on a high temperature sealing element located between the fixture and the ceramic membrane to effect a seal and to hold the ceramic membrane in place. The force can be exerted directly on the sealing element or on the ceramic membrane itself.
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: September 24, 2002
    Assignees: Praxair Technology, Inc., BP Amoco Corporation
    Inventors: James Eric White, Prasad Apte, Thomas Gilbert Halvorson, Victor Emmanuel Bergsten, Ajit Yeshwant Sane, Terry Joseph Mazanec
  • Patent number: 6332964
    Abstract: A multi-phase solid electrolyte ion transport membrane comprising at least two phases wherein one of the phases comprises an oxygen ion single conductive material. The other phase comprises an electronically-conductive metal or metal oxide conducting phase is present in a low volume percentage. One method for achieving this result incorporates the minority phase into the powder from which the membrane is made by deposition of the metal or metal oxide from a polymer made by polymerizing a chelated metal dispersion in a polymerizable organic monomer or prepolymer. The multi-phase composition advantageously comprises a first phase of a ceramic material and a second phase of a metal or metal oxide bound to a surface of the ceramic material. A second method fabricates the membrane from a mixture of two powders one of which contains a mixture of the two phases.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: December 25, 2001
    Assignees: Praxair Technology, Inc., BP Amoco Corporation
    Inventors: Chieh Cheng Chen, Ravi Prasad, Terry J. Mazanec, Charles J. Besecker
  • Patent number: 6298671
    Abstract: A method for efficiently producing, transporting, offloading, storing and distributing a natural gas to a marketplace. The method comprising producing the natural gas from a first subterranean formation, liquefying the natural gas to produce a liquefied natural gas, transporting the liquefied natural gas to a re-gasification platform, offloading and pressurizing the liquefied natural gas, re-gasifying the liquefied natural gas to produce a re-gasified natural gas, and injecting the re-gasified natural gas into a second subterranean formation which is capable of storing natural gas and producing a product natural gas stream therefrom and transporting the product natural gas stream via a distribution system to a marketplace.
    Type: Grant
    Filed: June 14, 2000
    Date of Patent: October 9, 2001
    Assignee: BP Amoco Corporation
    Inventors: Kevin Kennelley, Paul D. Patterson
  • Patent number: 6264811
    Abstract: The present invention provides an ion conducting ceramic membrane selectively permeable to a gas, for instance oxygen and a method of treating such a membrane to improve permeation through the membrane. The membrane is formed by a mass of a substance through which ions of the gas migrate. The mass has two opposed surfaces where dissociation and ionization of the gas occurs and gas ions release electrons and recombine to form molecules of the gas, respectively. At least one of said two opposed surfaces is treated by a removal of surface material to produce surface irregularities of increased area and therefore an increase in total surface area of a treated surface to in turn increase permeation of the gas. Preferably, both surfaces of the membrane are treated by chemical etching techniques, although sand blasting and ion etching are other possible surface treatments in accordance with the present invention.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: July 24, 2001
    Assignees: Praxair Technology, Inc., BP Amoco Corporation
    Inventors: Weitung Wang, Jack C. Chen, Prasad Apte, Terry Joseph Mazanec
  • Patent number: 6262220
    Abstract: Polyester compositions containing terephthalate, 2,6-naphthalate and/or isophthalate moieties, and showing improved properties are disclosed.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: July 17, 2001
    Assignee: BP Amoco Corporation
    Inventors: Edward E. Paschke, Charles W. Bauer, Frank C. Robertson, James M. Tibbitt
  • Patent number: 6256944
    Abstract: A method and system for preventing water entering a dispenser from collecting in the containment pan. This method utilizes a shield or barrier placed inside the dispenser above the containment pan. The material used to form the barrier is insoluble in water but soluble in the hydrocarbons typically found in a dispensing system.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: July 10, 2001
    Assignee: BP Amoco Corporation
    Inventors: David Lyzinski, Michael Butkovich, Albert Kovach, Charles M. Daul
  • Patent number: 6258987
    Abstract: A process for controlling the composition of a subgrade gasoline so that the subgrade will yield an alcohol-containing gasoline which precisely meets desired specifications when mixed with the desired amount of alcohol. The process involves blending a plurality of blendstocks to produce a subgrade, withdrawing a sample of the subgrade, mixing it with a known amount of alcohol, analyzing the properties of the resulting mixture, and using the analysis results to control and optimize the blending process.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: July 10, 2001
    Assignee: BP Amoco Corporation
    Inventors: Gerald K. Schmidt, Ken Tadano
  • Patent number: 6255525
    Abstract: A process for preparing an aromatic carboxylic acid having improved purity comprising contacting at an elevated temperature and pressure a mixture comprising an impure aromatic carboxylic acid and a solvent in the presence of hydrogen gas with a carbon catalyst which is essentially free of a hydrogenation metal component.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: July 3, 2001
    Assignee: BP Amoco Corporation
    Inventors: David Lee Sikkenga, M. Michelle Morie-Bebel, Stephen V. Hoover
  • Patent number: 6248879
    Abstract: A process for preparation of crosslinked cellulosic products containing at least 30 wt. % cellulosic fibers and the polyanhydride crosslinked cellulosic products resulting therefrom wherein a cellulosic material is treated with an aqueous solution of a polycarboxylic acid formed by hydrolysis of a polyanhydride of the structure which comprises the reaction product of trimellitic anhydride and a diol in the mole ratio of from about 2.0:0.9 to about 2.0:1.1, wherein R is selected from the group consisting of alkyl, alkylene and cycloalkylene moieties of up to 12 carbon atoms and ethylene oxide and propylene oxide moieties of molecular weight up to about 6000, wherein said cellulosic material is impregnated with an aqueous solution of said polyanhydride, dried, and heated to a temperature of from about 120° C. to about 200° C.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: June 19, 2001
    Assignee: BP Amoco Corporation
    Inventors: Ronald L. Anderson, Wendell W. Cattron, Vincent F. Smith, Jr., David J. Fenoglio
  • Patent number: 6239321
    Abstract: A process for upgrading a feedstock comprising lower oligomers and higher oligomers of isobutylene by oligomerizing the lower oligomer fraction thereof to higher molecular weight components.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: May 29, 2001
    Assignee: BP Amoco Corporation
    Inventors: Allen B. Mossman, Egils Vitands
  • Patent number: 6228970
    Abstract: A new poly (biphenyl ether sulfone) having improved polydispersity and also having low levels of low molecular weight oligomer.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: May 8, 2001
    Assignee: BP Amoco Corporation
    Inventor: Selvaraj Savariar
  • Patent number: 6223519
    Abstract: A power generating method that includes the steps of burning a reformed fuel in the presence of air in a combustor of a gas turbine to generate a hot exhaust gas is disclosed. The hot exhaust gas is then passed through a turbine section of the gas turbine to generate power and, thereafter, the hot exhaust gas is passed through a heat recovery system where the hot exhaust gas is successively cooled as it passes through a series of heat exchangers. Heat exchangers comprising the heat recovery system include combustion air pre-heater(s); a thermochemical recuperator (or reformer), wherein hot exhaust gas provides the endothermic heat of reaction necessary to reform a raw fuel/steam mixture to the combustible, reformed fuel that is eventually burned in the combustor; and one or more water/steam heaters which supply steam to a low-pressure, condensing steam turbine of a bottoming Rankine cycle to generate additional power.
    Type: Grant
    Filed: February 11, 1999
    Date of Patent: May 1, 2001
    Assignee: BP Amoco Corporation
    Inventors: Arunabha Basu, Shankar Rajagopal
  • Patent number: 6207120
    Abstract: An integrated process for vent gas treatment for the abatement of volatile emissions is disclosed. The vent gas comprises dioxygen, carbon monoxide, hydrocarbons and other organic compounds comprising one or more alkyl halide compound of 1 to 5 carbon atoms. In the preferred embodiment, the vent gas is heated and mixed with an amount of combustible fluid. Then the mixture is directed to a catalytic oxidation reactor having a suitable oxidation catalyst disposed therein, wherein the mixture is catalytically oxidized. The effluent from the catalytic oxidation reactor is directed to heat the incoming vent gas and subsequently to a scrubber wherein the effluent is scrubbed of soluble compounds and the resultant treated gas stream is vented. Importantly, the amount of combustible fluid supplied to the vent gas stream is controlled so at to provide sufficient reactants for the catalytic oxidation to maintain reaction temperatures from 200° C. and 600° C.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: March 27, 2001
    Assignee: BP Amoco Corporation
    Inventors: Frank G. Belmonte, Kenneth J. Abrams, Judith P. Oppenheim
  • Patent number: 6207745
    Abstract: This invention is a flame-retardant, anti-dripping polyamide composition comprising a high temperature polyphthalamide, a halogen-containing organic compound, and an anti-drip effective amount of an anti-drip component comprising a polymer formed from at least one ethylenically unsaturated monomer and at least one carboxylic acid containing monomer.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: March 27, 2001
    Assignee: BP Amoco Corporation
    Inventors: Bruce H. Bersted, Mark G. Reichmann
  • Patent number: 6201079
    Abstract: A propylene polymer made using a magnesium halide-supported, titanium-containing solid catalyst component having a broad processing window is produced by incorporating into the polymerization catalyst system a selected alkyl methyldimethoxysilane, preferably isobutylmethyl-dimethoxysilane. Useful articles made from such resin include OPP film.
    Type: Grant
    Filed: September 23, 1996
    Date of Patent: March 13, 2001
    Assignee: BP Amoco Corporation
    Inventors: Jerome Anthony Streeky, Bruce Howard Bersted, John William Blake, Daan Feng, Charles Richard Hoppin, Benjamin Samuel Tovrog
  • Patent number: 6200541
    Abstract: Composite materials of the invention, which include a gas-tight ceramic, a porous metallic support, and an interfacial zone therebetween eliminate the need for mechanical seals between two such dissimilar materials. Oxygen ion-conducting dense ceramic membranes are formed on a porous metallic alloy to provide an interfacial zone identifiable by a gradient of composition in at least one metallic element across the interfacial zone between the dense ceramic membrane and the porous support. Processes using composite materials in accordance with the invention are, for example, used for production of synthesis gas comprising carbon monoxide and molecular hydrogen, whereby the synthesis gas is, advantageously, free of deleterious and/or inert gaseous diluents such as nitrogen.
    Type: Grant
    Filed: May 7, 1999
    Date of Patent: March 13, 2001
    Assignee: BP Amoco Corporation
    Inventors: Mark S. Kleefisch, Carl A. Udovich, Joseph G. Masin, Thaddeus P. Kobylinski
  • Patent number: 6197717
    Abstract: A process and catalyst are provided for dehydrogenating a hydrocarbon feedstock and producing an olefinic product. The process comprises contacting the feedstock at dehydrogenation conditions with a dehydrogenation catalyst comprising from about 0.01 weight percent to about 5.0 weight percent of a platinum group metal, from about 0.02 weight percent to about 10.0 weight percent of zinc, and a support component comprising borosilicate and an alkali metal.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: March 6, 2001
    Assignee: BP Amoco Corporation
    Inventors: Bruce D. Alexander, George A. Huff, Jr., Mark P. Kaminsky
  • Patent number: 6194609
    Abstract: Crystallization of a crystallizable material is achieved through heat exchange in a plate heat exchanger is disclosed. A mixture or solution comprising a crystallizable material is passed through a plate heat exchanger at an appropriate temperature and pressure such that the material is selectively crystallized. The processes are particularly useful in the production of para-xylene, dimethylnaphthalene, aromatic carboxylic acids, and aromatic anhydrides.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: February 27, 2001
    Assignee: BP Amoco Corporation
    Inventors: Kenneth J. Abrams, Thomas M. Bartos, Debra J. Streich
  • Patent number: 6187718
    Abstract: Superconducting composites comprising a high thermal conductivity carbon substrate and a layer of ceramic-type superconductor. Particularly attractive for use as a superconducting flexible conductor are composites comprising a high thermal conductivity, low resistivity carbon fiber disposed within a non-adherent sleeve layer formed of the superconducting ceramic material.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: February 13, 2001
    Assignee: BP Amoco Corporation
    Inventor: David A. Schulz
  • Patent number: 6166266
    Abstract: A particularly useful process which includes the steps of providing a source of formaldehyde formed by conversion of methanol in the presence of a catalyst comprising oxides of molybdenum as an essential catalyst component; and contacting the source of formaldehyde and a predominately dimethyl ether feedstream with a heterogeneous, condensation promoting catalyst capable of hydrating dimethyl ether under conditions of reaction sufficient to form an effluent comprising water, methanol, formaldehyde, dimethyl ether, and polyoxymethylene dimethyl ethers is disclosed. Unreacted dimethyl ether is recovered from the effluent and recycled to the formation of polyoxymethylene dimethyl ethers. The resulting dimethyl ether-free liquid mixture is heated in the presence of an acidic catalyst to convert at least the methanol and formaldehyde present to polyoxymethylene dimethyl ethers. Advantageously, methylal and higher polyoxymethylene dimethyl ethers are formed and separated in a catalytic distillation column.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: December 26, 2000
    Assignee: BP Amoco Corporation
    Inventors: Gary P. Hagen, Michael J. Spangler