Patents Examined by Anthony McFarlane
  • FCC process and apparatus with upset tolerant third stage separator
    Patent number: 5464528
    Abstract: An inertial/filtering separator in a single vessel and FCC process using same as a third stage separator are disclosed. Gas and fines are added tangentially to an annulus formed by a cylindrical insert in a vessel. Gas flows over the insert and down to filters in the vessel. Solids are withdrawn from the base of the annulus and periodically from the filter. Three types of solids collection--inertial, gravity settling and filtration--are practiced in a single vessel.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: November 7, 1995
    Assignee: Mobil Oil Corporation
    Inventors: Hartley Owen, Paul H. Schipper
  • Catalyst compositions comprising rhodium catalyst complexes
    Patent number: 5464801
    Abstract: The present invention relates to catalyst compositions and methods for the preparation thereof. More particularly, the present invention relates to novel rhodium catalyst complexes compositions useful the crosslinking of compositions containing methylhydrogensiloxanes. The present invention further relates to a method for the preparation of these novel catalyst complexes and to their use in emulsions of methylhydrogensiloxanes which are used to treat fibers or fabrics.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: November 7, 1995
    Assignee: Dow Corning Corporation
    Inventors: Jeffrey A. Kosal, Anthony Revis
  • Stable, high-yield reforming catalyst
    Patent number: 5464800
    Abstract: A reforming process, selective for the dehydrocyclization of paraffins to aromatics, is effected using a bed of catalyst particles containing multiple Group VIII (8-10) noble metals having different gradients within the catalyst particles and a nonacidic large-pore molecular sieve. The use of this bed of catalyst particles results in greater selectivity of conversion of paraffins to aromatics and improved catalyst stability, particularly in the presence of small amounts of sulfur.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: November 7, 1995
    Assignee: UOP
    Inventors: Leonid B. Galperin, Paula L. Bogdan, Edwin P. Boldingh
  • Composition for the paint spray treatment using secondary alcohol esters in water
    Patent number: 5464556
    Abstract: A composition for treating oversprayed paints that contains an effective amount of alcohol esters and alcohol ester derivatives in water. The carbonyl compound is capable of dissolving paint while remaining non-reactive with water. The alcohol ester employed has the general formula: ##STR1## The alcohol ester derivative employed has the general formula: ##STR2## R' and R" are a substituted or unsubstituted linear alkyl group containing 1 to 8 carbon atoms, R and R"' are linear or branched alkyl groups containing 1 to 10 carbon atoms, and R and R"' are either identical or different alkyl functionalities.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: November 7, 1995
    Assignee: Nortru, Inc.
    Inventors: Edwin C. Zuerner, Robert R. Ratzelt, Norman Foster
  • Process for preparing a supported metal catalyst for the selective hydrogenation of hydrocarbons by means of such a process and process for selective hydrogenation of hydrocarbons using such a catalyst
    Patent number: 5464802
    Abstract: A process for preparing a supported metal catalyst based on Pd and Cu for e selective hydrogenation of polyunsaturated hydrocarbons comprises, in cascade, the steps of impregnating a porous support with a solution of a palladium and potassium salt, submitting the resulting solid product to a hydrogen flowing stream, impregnating the resulting solid material with a copper salt solution, submitting the resulting solid product to a flowing hydrogen stream, and drying the resulting solid product.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: November 7, 1995
    Assignee: Ministero Dell'Universita' E Della Ricerca Scientifica E Tecnologica
    Inventors: Giuseppe Gubitosa, Alberto Cremona
  • Arsine and phosphines as acetylene converter moderators
    Patent number: 5463154
    Abstract: A method for acetylene hydrogenation which involves adding a member selected from the group consisting of arsine and phosphine to moderate the activity of acetylene hydrogenation catalysts while maintaining acceptable catalyst activity and avoiding the risk of product quality contamination by the acetylene converter moderator. The acetylene hydrogenation process involves adding arsine at a concentration level within the range of about 1 wppb-3 wppb to the gas, such as ethylene, containing acetylene to prevent temperature runaway during the exothermic acetylene hydrogenation reaction. By controlling the presence of arsine levels to such a relatively low level, temperature runaway during the highly exothermic acetylene hydrogenation reaction is prevented while maintaining acceptable catalyst activity levels for purposes of the acetylene hydrogenation reaction.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: October 31, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventors: David R. Slim, Edgar L. Mohundro, Stephen M. Mayo
  • Skeletal isomerization of n-pentenes to isopentene on pretreated zeolites
    Patent number: 5463160
    Abstract: The selective conversion by skeletal isomerization over steam pretreated ferrierite zeolite-based catalysts having pore sizes of at least about 4.2 Angstroms and a pore structure characterized by intersecting 10-MR and 8-MR channels. The steam pretreated ferrierite zeolite-based catalysts have sufficient acidity to catalyze the skeletal isomerization of normal olefins. The catalysts can be used to produce isoolefins for reaction with alcohols in integrated processes to produce tertiary amyl methyl ethers such as TAME.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: October 31, 1995
    Assignee: Texaco Inc.
    Inventors: Erven J. Kuhlmann, James R. Pascoe, Christopher J. Thom
  • Upgrading of cyclic naphthas
    Patent number: 5463155
    Abstract: A process combination is disclosed to selectively upgrade naphtha to obtain an isoparaffin-rich product for blending into gasoline. A naphtha feedstock is subjected to ring cleavage to convert naphthenes to paraffins using a nonacidic catalyst followed by isomerization of paraffins to obtain an increased proportion of isoparaffins.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: October 31, 1995
    Assignee: UOP
    Inventors: Leonid B. Galperin, Jeffery C. Bricker, Jennifer S. Holmgren
  • Mercury removal by dispersed-metal adsorbents
    Patent number: 5463167
    Abstract: A method of removing contaminants from a hydrocarbon stream which involves contacting the hydrocarbon stream containing a heavy-metal contaminant with a porous material under conditions suitable for adsorption of the contaminant by the porous material. A process for preparing an adsorbent which involves forming a mixture of metal oxide powder and support powder, shaping the mixture into an aggregate, and reducing the aggregate to transform the metal oxide to the metallic state.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: October 31, 1995
    Assignee: Exxon Chemical Patents Inc.
    Inventor: John D. Y. Ou
  • Olefin isomerization process
    Patent number: 5463161
    Abstract: An improved process is disclosed for the isomerization of hindered olefins using a catalyst comprising a non-zeolitic molecular sieve. It is of particular interest to reduce alkyl substituents in the olefins with low formation of undesirable by-products.
    Type: Grant
    Filed: September 17, 1993
    Date of Patent: October 31, 1995
    Assignee: UOP
    Inventors: Gregory J. Gajda, Paul T. Barger
  • Esterification catalyst for the production of high boiling esters and process of making the high boiling esters
    Patent number: 5462906
    Abstract: The present invention provides a catalyst composition suitable for the production of high boiling esters comprising a source of stannous tin and an alkali metal aluminate. In one preferred embodiment the catalyst comprises about 92 parts sand, about 5 parts stannous oxalate, and about 3 parts of a sodium aluminate, by weight, dry basis. This catalyst is particularly useful in making phthalates, adipates, sebacates and azelates which esters are chiefly used plasticizers.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: October 31, 1995
    Inventor: Stan Jakubowycz
  • Method of treating surface of semiconductor substrate
    Patent number: 5460691
    Abstract: It is an object of the present invention to provide a method capable of performing surface treatment of a plurality of semiconductor substrates at one time and treating them uniformly with high selectivity. A plurality of semiconductor substrates having interlayer insulating films thereon are prepared. The plurality of semiconductor substrates are arranged in a vertical direction at predetermined intervals in a reaction chamber so that one face of each faces upwards and the other face of each faces downwards. Etching gas for etching the surfaces of the interlayer insulating films is sent into the reaction chamber in a direction vertical to the surfaces of said semiconductor substrates under low pressure.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: October 24, 1995
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Kiyoteru Kobayashi, Isao Tottori
  • Storage of natural gas
    Patent number: 5461023
    Abstract: Natural gas is stored in a closed vessel under a pressure of about 1400 to 4500 kPa using a carbon molecular sieve adsorbent having at least 80% of its particle pore volume as micropores having diameters greater than 0.55 nm and less than 0.65 nm, particularly about 0.6 to 0.65 nm. The capacity of such micropores for methane is at least 110 mL methane per mL of carbon (at 300 psig or 2,169 kPa abs.). The deliverable volume of natural gas from a vessel packed with carbon molecular sieve particles is at least 70 times the volume of the vessel. The deliverable volume is optimized by heating a carbonized polymer in the presence of carbon dioxide to increase the pore volume.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: October 24, 1995
    Assignee: AlliedSignal Inc.
    Inventors: Chin-Hsiung Chang, Gary J. Seminara, Alan E. van Til
  • Method for diamondoid extraction using a solvent system
    Patent number: 5461184
    Abstract: A method for extracting diamondoid compounds from a hydrocarbonaceous fluid such as natural gas, that contains diamondoid compounds is disclosed. The hydrocarbonaceous fluid is mixed with a first solvent in which diamondoids are at least partially soluble. The resulting mixture is separated into a vapor stream and a diamondoid-enriched solvent stream. The vapor stream is then countercurrently flowed past a second solvent in a multistage contacting device, so that a diamondoid-depleted vapor stream and a second diamondoid-enriched solvent stream are created. The diamondoid-enriched solvent streams can be recycled and either added to the first solvent or removed if they are highly saturated with diamondoid compounds.
    Type: Grant
    Filed: April 25, 1994
    Date of Patent: October 24, 1995
    Assignee: Chevron U.S.A. Inc.
    Inventor: Dirk S. Swanson
  • Impregnated ceramic core and method of making same
    Patent number: 5460854
    Abstract: A method of strengthening a fired porous ceramic core for use in investment casting includes the steps of providing a fired porous ceramic core, impregnating the core with an aqueous solution of a water-soluble gum, resin, or sugar, such as polyvinyl alcohol, and drying the impregnated core to remove the water.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: October 24, 1995
    Assignee: Certech Incorporated
    Inventor: Eugene Krug
  • Procatalyst composition for the polymerization of alpha-olefines, preparation and use
    Patent number: 5461018
    Abstract: The present invention relates to a procatalyst composition for the polymerization of alpha-olefines, which has been prepared in steps, in which is arranged a carrier agent based on at least one inorganic oxide, having few or no hydroxyl groups on its surface, and the carier agent is reacted with the magnesium compound and one or more transition metal compounds of the groups IVB and VB of the periodic table.
    Type: Grant
    Filed: March 16, 1994
    Date of Patent: October 24, 1995
    Assignee: Borealis Holding A/S
    Inventors: Sirpa Ala-Huikku, Marjaana Lommi, Eero Iiskola
  • Highly active catalyst for the polymerization of olefins and method for the preparation of the same
    Patent number: 5459116
    Abstract: Highly active catalyst for the polymerization of olefins and method for the preparation of the same.The catalyst for the polymerization of olefins, consisting essentially of-magnesium, titanium, halogen and at least one electron donor, wherein the electron donor is selected from the group consisting of aliphatic unsaturated esters, aliphatic saturated esters, aromatic esters and the mixture thereof, which all contain at least one hydroxy group.The catalyst is prepared by directly reacting a magnesium compound of liquid phase having no reducing power with a titanium compound of liquid phase in the presence with at least one electron donor.Superior in activity as well as production yield in polymerizing olefins, the catalyst is capable of not only providing the polymer with high stereoregularity but also improving the bulk density of the polymer, especially polyethylene.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: October 17, 1995
    Assignee: Samsung General Chemicals Co., Ltd.
    Inventors: Ki S. Ro, Min C. Chung, Tu W. Chang, Sung H. Han
  • Method of imparting light resistance and ultraviolet-screening action to fibrous article
    Patent number: 5458924
    Abstract: A durable light resistance and UV-screening action is imparted to a fibrous article by coating the fibrous article with a polymer comprising units derived from at least one monomer selected from those which are represented by the formulae (1) and (2): ##STR1## wherein R is H or CH.sub.3 and X is --O--, --OCH.sub.2 CH.sub.2 O-- or --OCH.sub.2 CH(CH.sub.3)O--, ##STR2## wherein Y is halogen or CH.sub.3, n is 1 or 2, R.sub.1 is C1-6 hydrocarbyl, m is 1 or 2, R.sub.2 is C1-6 alkylene and R.sub.3 is H or CH.sub.3.
    Type: Grant
    Filed: November 9, 1993
    Date of Patent: October 17, 1995
    Assignee: Ipposha Oil Industries Co., Ltd.
    Inventors: Kazuto Kashiwai, Takaichi Yamamoto, Shinichi Kumagae
  • Copper-based oxidation catalyst and its applications
    Patent number: 5457079
    Abstract: A copper-based oxidation catalyst comprising a substrate of copper or copper alloy and regions of a metal composed mainly of a group VIII element in close contact with the substrate, the surface of the substrate being partly exposed to the outside, has a high catalytic activity on the carbonyl oxidation reaction and is effective as a catalyst for electroless plating, a fuel cell electrode material, a catalyst for treating waste water or waste liquor or an oxidation reaction catalyst.
    Type: Grant
    Filed: September 21, 1993
    Date of Patent: October 10, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Takeyuki Itabashi, Fujiko Kinosaki, Akio Takahashi, Haruo Akahoshi
  • Catalyst of the galloaluminosilicate type containing gallium, a nobel metal of the platinum family and at least on additional metal, and its use in the aromatization of hydrocarbons
    Patent number: 5456822
    Abstract: Disclosed are reactions for the aromatization of hydrocarbons containing 2 to 9 carbon atoms per molecule, with a composite catalyst containing:an MFI zeolite in hydrogen form, the framework containing at least one of the elements silicon, aluminum and/or gallium; a matrix; gallium; at least one noble metal of the platinum family, at least one additional metal selected from the group made up of tin, germanium, indium, copper, iron, molybdenum, gallium, thallium, gold, silver, ruthenium, chromium, tungsten and lead, and possibly a compound selected from the group made up of alkali and alkaline earth metals.
    Type: Grant
    Filed: October 26, 1993
    Date of Patent: October 10, 1995
    Assignee: Institut Francais du Petrole
    Inventors: Christian Marcilly, Fabio Alario, Jean-Francois Joly, Fabienne Le Peltier