Patents Examined by William G. Wright
  • Patent number: 4767738
    Abstract: The present invention is a novel crystalline lead aluminum borate composition characterized by a unique x-ray diffraction pattern.
    Type: Grant
    Filed: November 20, 1986
    Date of Patent: August 30, 1988
    Assignee: Amoco Corporation
    Inventors: John L. Melquist, Melvin L. Luetkens, Jr.
  • Patent number: 4764499
    Abstract: Disclosed is a method for preparing dual colloid catalyst compositions which are suitable for use in such processes as ammonia synthesis, carbon monoxide hydrogenation, hydrogenation and denitrogenation. The method comprises forming a gel, or suspension, by admixing: (i) one or more transition metal cyano-containing anionic-complex solutions wherein at least one solution contains a reducible transition metal, and wherein one or more of these solutions optionally contains a nonreducible metal, with (ii) one or more solutions containing polyvalent metal cations. The resulting gel, or suspension is heated to a temperature of about 90.degree. C. to about 150.degree. C. for an effective amount of time to allow hydrolysis and polymerization to occur. The resulting solid is then filtered and ion exchanged with ions of one or more metals selected from those exchangeable metals from groups IA, IIA, IIIB, IVB, VIB, VIIB, and VIII of the Periodic Table of the Elements. The resulting ion-exchanged material is then dried.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: August 16, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: Thomas H. Vanderspurt, Michael A. Richard, Tessie M. Che
  • Patent number: 4764270
    Abstract: An improved tar sands derived bitumen and coal liquification process is disclosed wherein substantial percentages of subdivided coal particles and tar sands derived bitumen liquids are mixed and then corefined with hydrogen under hydrocracking conditions, but in the absence of a separate catalyst, at a temperature range of 800.degree. to 900.degree. F. and a pressure of about 2400 psig. The resutling fluid after removal of residual solids is a suitable liquid feedstock for conventional refinery equipment to produce petroleum fractions useful as transportation and heating fuels. Preferably, a portion of the corefined bitumen-coal liquid product may be recycled for mixture with the bitumen liquid and coal. Raw or native tar sands may also be mixed with the liquid butumen and coal in the process.
    Type: Grant
    Filed: March 18, 1986
    Date of Patent: August 16, 1988
    Assignee: Chevron Research Company
    Inventors: C. Richard Hsieh, William I. Donaldson
  • Patent number: 4758331
    Abstract: Fine particles of solid fossil fuels are pyrolyzed by passage in a thin layer through a heating zone at successively higher temperatures in a non-oxidizing atmosphere while rapidly separating and removing volatile pyrolysis products. The resulting char may be first treated with mineral acid or employed directly in the hydroprocessing of additional solid fossil fuel to liquid fuels. Alternatively, the acid-washed char may be hydrotreated to afford an improved char product having a low sulfur and mineral content.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: July 19, 1988
    Assignee: Board of Trustees, University of Illinois
    Inventors: Carl W. Kruse, Neil F. Shimp, Roy J. Helfinstine, Jimmie D. Cooper
  • Patent number: 4758544
    Abstract: A catalyst composition comprising an alumina-aluminum phosphate-silica support bearing a halogen, a Group VI metal and a Group VIII metal in which the support has an average pore radius of from about 10 .ANG. to about 300 .ANG., a surface area ranging from about 50 m.sup.2 /g to about 400 m.sup.2 /g and a pore volume of about 0.1 to about 1.5 cc/g. The catalyst composition is used for hydroprocessing oils and possesses significant hydrodenitrification activity.
    Type: Grant
    Filed: July 17, 1985
    Date of Patent: July 19, 1988
    Assignee: Chevron Research Company
    Inventors: Ronald W. Plesko, Allen E. Somers, John J. Stanulonis, Harold E. Swift, Roger F. Vogel
  • Patent number: 4757043
    Abstract: Catalysts useful to catalyze the nitration of aromatic compounds in the vapor phase to produce nitroaromatic compounds are prepared by contacting a Group 4b-Group 3b metal oxide composition represented by the empirical formula:(M.sup.1.sub.a M.sup.2.sub.b O.sub.c).sub.x (NO.sub.2).sub.ywherein M.sup.1 is at least one element selected from Group 4b of the Periodic Table of the Elements, M.sup.2 is at least one element selected from Group 3b of the Periodic Table of the Elements, a is 1, b is 0 to 20, c is a number taken to satisfy the average valences of M.sup.1 and M.sup.2 in the oxidation states in which they exist in the composition, x is 1, and y is 0 to c, with a catalytically effective amount of sulfur trioxide. Such catalysts are particularly effective to catalyze the vapor phase nitration of chlorobenzene and are characterized in such reaction by providing a para/ortho isomer distribution ratio of at least about 2/1.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: July 12, 1988
    Assignee: Monsanto Company
    Inventor: Ignatius Schumacher
  • Patent number: 4755497
    Abstract: The invention is a solid state preparation of copper aluminum borate catalyst comprising: dry mixing solid reagents comprising suitable precursors of copper oxide (CuO), aluminum oxide (Al.sub.2 O.sub.3) and boron oxide (B.sub.2 O.sub.3) with a solid binder which aids compaction of the solid reagents, is essentially inert to said reagents, and burns away upon calcination, said dry mixing resulting in formation of a superficially dry copper aluminum borate precursor; compacting the dry precursor; and calcining the precursor at a sufficiently high temperature to form crystalline copper aluminum borate.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: July 5, 1988
    Assignee: Amoco Corporation
    Inventors: Richard E. De Simone, Eric J. Moore, Bruce I. Rosen
  • Patent number: 4753681
    Abstract: A pretreatment step for the defouling of the compartments used in electrodeionization apparatus in which a solution of sodium percarbonate is contacted with the compartments to break up agglomerations of organic contaminants and colloidal films as well as to kill bacteria resident within the system. After this pretreatment step any conventional cleaning may be performed to complete the cleaning cycle.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: June 28, 1988
    Assignee: Millipore Corporation
    Inventors: Anthony J. Giuffrida, Yair Egozy
  • Patent number: 4750991
    Abstract: A method for hydrogenating a solvent-refined coal, comprising:(a) hydrogenating coal in the presence of a hydrocarbon solvent and an iron catalyst;(b) obtaining a solvent-refined coal material therefrom, which has a boiling point of at least 400.degree. under atmospheric pressure conditions;(c) removing preasphaltenes from said solvent-refined coal material to obtain a substantially preasphaltene free solvent-refined coal; and(d) hydrogenating the solvent-refined coal in a fixed bed under hydrogen pressure.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: June 14, 1988
    Assignees: Mitsubishi Chemical Industries, Ltd., Kabushiki Kaisha Kobe Seiko Sho, Idemitsu Kosan Company Limited, Asia Oil Company Limited, Nippon Brown Coal Liquefaction Co., Ltd.
    Inventors: Yoichi Kageyama, Hironori Kageyama, Jun Imai, Yukio Nakako
  • Patent number: 4748140
    Abstract: A process for activating fluid bed catalysts useful for producing maleic anhydride from 4 carbon atom hydrocarbons is provided including contacting the fluidized catalyst containing the mixed oxides of vanadium and phosphorus with oxygen and a reducing gas at least partially combustible with oxygen at elevated temperatures sufficient to cause such combustion, wherein the molar ratio of reducing gas to oxygen is greater than the stoichiometric ratio required for complete combustion of the reducing gas. Also provided are catalysts activated by the process of the invention, as well as a process for producing maleic anhydride utilizing the catalysts thus activated.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: May 31, 1988
    Assignee: The Standard Oil Company
    Inventors: Patricia R. Blum, Ernest C. Milberger, Mark L. Nicholas, Patricia A. Zock
  • Patent number: 4746642
    Abstract: Catalysts comprising the adduct of a Group 4b-Group 3b metal oxide composition represented by the empirical formula:(M.sup.1.sub.a M.sup.2.sub.b O.sub.c).sub.x (NO.sub.2).sub.ywherein M.sup.1 is at least one element selected from Group 4b of the Periodic Table of the Elements, M.sup.2 is at least one element selected from Group 3b of the Periodic Table of the Elements, a is 1, b is 0.05 to 20, c is a number taken to satisfy the average valences of M.sup.1 and M.sup.2 in the oxidation states in which they exist in the composition, x is 1, and y is 0 to c, and a catalytically effective amount of sulfur trioxide are useful to catalyze the nitration of aromatic compounds in the vapor phase to produce nitroaromatic compounds. The catalysts are particularly effective to catalyze the vapor phase nitration of chlorobenzene and are characterized in such reaction by providing a para/ortho isomer distribution ratio of at least about 2/1.
    Type: Grant
    Filed: November 14, 1984
    Date of Patent: May 24, 1988
    Assignee: Monsanto Company
    Inventor: Ignatius Schumacher
  • Patent number: 4746641
    Abstract: Disclosed is a process for ammoxidation of paraffins containing 2-5 C atoms over a vanadium-antimony oxide catalyst, the catalyst, and a precursor slurry for making such catalyst.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: May 24, 1988
    Assignee: Standard Oil Company
    Inventors: Andrew T. Guttmann, Robert K. Grasselli, James F. Brazdil
  • Patent number: 4746369
    Abstract: Acidic stripping solutions comprising hydrogen peroxide as oxidant, either at least one phosphorous-oxy acid, or the addition of nitric acid, together with accelerators and surface active agents, are effective for the rapid and selective removal of protective hard surface coatings and nickel-base brazes from a variety of metal surfaces.
    Type: Grant
    Filed: February 24, 1987
    Date of Patent: May 24, 1988
    Assignee: Enthone, Incorporated
    Inventors: Thomas E. Sullivan, Thomas W. Bleeks
  • Patent number: 4743574
    Abstract: A cobalt-molybdenum catalyst and a method for preparing same, said catalyst useful for the hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) of distillates of petroleum. The catalyst is supported by aluminum phosphate or an aluminum borate. In a preferred embodiment the catalyst has a low cobalt content, between 0.5% and 2.0% by weight calculated as CoO, and a molybdenum content of between 10% and 20% by weight, calculated as MoO.sub.3. The phosphorus or boron compounds added to the aluminum before the impregnation of the active metals prevents the formation of undesirable compounds of the CoAl.sub.2 O.sub.4 type, which is inactive in HDS. It is for that reason that the catalyst has a formulation with 70% less cobalt than the previous state-of-the-art catalysts. Very small crystals, highly dispersed on the surface of the catalyst, whose formula is CoMoO.sub.4, are responsible for the stability and the high level of activity in HDS and HDN which results.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: May 10, 1988
    Assignee: Intevep, S.A.
    Inventors: Alfredo L. Morales, Juan J. Garcia
  • Patent number: 4740294
    Abstract: A method for sequentially co-processing heavy hydrocarbon materials and carbonaceous materials comprising first subjecting the heavy hydrocarbon material in the presence of a disposable metal catalyst to produce and separate therefrom a first distillate stream and a first non-distillable effluent stream containing the disposable metal catalyst. The first non-distillable effluent stream then is mixed with the carbonaceous material and the mixture subjected to liquefaction conditions in the presence of said disposable metal catalyst. The liquefaction product then is subjected through the use of sequential fractionation and critical solvent extraction processing steps to separate and recover various heavy hydrocarbon and carbonaceous-derived light hydrocarbon liquid products therefrom.
    Type: Grant
    Filed: September 25, 1984
    Date of Patent: April 26, 1988
    Assignee: Kerr-McGee Corporation
    Inventor: Donald E. Rhodes
  • Patent number: 4740247
    Abstract: Methods and compositions are provided for the removal of rosin soldering flux and adhesive tape residues from printed circuit and/or wiring boards, and for testing the quality of curing of U.V.-cured soldermask on such boards. The compositions of the invention contain terpene compounds, preferably in combination with terpene emulsifying surfactants to facilitate removal by rinsing in water.
    Type: Grant
    Filed: June 24, 1986
    Date of Patent: April 26, 1988
    Assignee: Petroleum Fermentations N.V.
    Inventors: Michael E. Hayes, Craig C. Hood, Ronald E. Miller, Robert Sharpe
  • Patent number: 4740491
    Abstract: Catalysts having as their active component sulfides of vanadium, molybdenum and tungsten are contacted with ammonia or with an amine which in aqueous solution has a basic ionization constant greater than that of ammonium hydroxide to suppress deactivation of the catalysts by exposure to the atmosphere.
    Type: Grant
    Filed: January 16, 1985
    Date of Patent: April 26, 1988
    Assignee: Gas Research Institute
    Inventors: Henry Wise, Benny L. Chan
  • Patent number: 4740490
    Abstract: Disclosed herein are catalyst compositions comprised of:(a) from about 15 to about 85 wt. % of crystallites selected from the group consisting of (i) crystallites of one or more transition metals and (ii) crystallites of reducible transition metal carbides and nitrides, and mixtures thereof, said transition metal being selected from those reducible metals from Groups IB, IIB, VIB, VIIB, and VIII of the Periodic Table of the Elements, wherein at least 80% of the crystallities have a diameter, d, between about 25 .ANG. and 500 .ANG. with the proviso that the crystallite size distribution of at least about 80% of these be expressed by the relationship 0.5D<d<2D where D is the median of the diameters of this 80%.(b) from about 15 to about 85 wt.
    Type: Grant
    Filed: August 10, 1984
    Date of Patent: April 26, 1988
    Assignee: Exxon Research and Engineering Company
    Inventors: Thomas H. Vanderspurt, Michael A. Richard, Angelo A. Montagna
  • Patent number: 4737482
    Abstract: An improved process is provided for forming ketones from the corresponding olefins by vapor phase oxidiation of the olefin in the presence of molecular oxygen and water vapor employing a heterogeneous catalyst comprising rhenium compounds and complexes, optionally containing at least one metal compound or complex selected from the group consisting of Group VIB metals and Group VIII noble metals, and mixtures thereof. It has been surprisingly found that these catalysts effect the formation of ketones in high selectivities with minimal selectivities to the undesirable carbon dioxide and carbon monoxide by-products.
    Type: Grant
    Filed: September 16, 1985
    Date of Patent: April 12, 1988
    Assignee: Exxon Research & Engineering Co.
    Inventors: Chuen Y. Yeh, Charles Savini
  • Patent number: 4737266
    Abstract: A method for hydrogenating a solvent-refined coal by heating it under hydrogen pressure in a fixed bed, characterized in that a solvent-refined coal fraction containing no substantial amount of preasphaltene is used as the solvent-refined coal.
    Type: Grant
    Filed: December 22, 1983
    Date of Patent: April 12, 1988
    Assignees: Mitsubishi Chemical Industries Ltd., Kabushiki Kaisha Kobe Seiko Sho, Idemitsu Kosan Company Limited, Asia Oil Company Limited, Nippon Brown Coal Liquefaction Co., Ltd.
    Inventors: Yoichi Kageyama, Hironori Kageyama, Jun Imai, Yukio Nakako