Patents Represented by Attorney James R. Hoatson, Jr.
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Patent number: 4505147Abstract: Methods and apparatus for determining water content of gases and vapors. The primary sensing device is a fluidic oscillator through which a sample of gas is passed. It is primarily useful in systems where the moisture content is large and there is a small difference between the molecular weight of water and the average molecular weight of the other components of the gas (or vapor) or systems where there is a large difference between the molecular weight of water and the average molecular weight of the other components.Type: GrantFiled: February 22, 1983Date of Patent: March 19, 1985Assignee: UOP Inc.Inventors: Paul J. Kuchar, Robert W. Sampson, Ronald F. Pacanowski
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Patent number: 4506032Abstract: This invention relates to a new catalyst for converting hydrocarbons. The catalyst comprises a platinum group component, a Group IVA component, especially tin, an alkali or alkaline earth component, more than 0.2 weight %, calculated on an elemental basis, of a halogen component and a porous carrier material, wherein the atomic ratio of the alkali or alkaline earth component to the platinum group component is more than 10. The catalyst is particularly useful for dehydrogenating paraffins having from 2 to 5 or more carbon atoms to the corresponding mono-olefins, or for dehydrogenating mono-olefins having from 3 to 5 or more carbon atoms to the corresponding di-olefins.Type: GrantFiled: October 14, 1983Date of Patent: March 19, 1985Assignee: UOP Inc.Inventors: Tamotsu Imai, Chi-Wen Hung
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Patent number: 4504450Abstract: A process is disclosed for treating particle-containing gas streams by removing particles and gaseous atmospheric pollutants. Parallel passage contactors are utilized to remove the gaseous pollutants. The minimum required gas flow rate for effective operation of these contactors is maintained by recycling a variable amount of low temperature gas which has been passed through a particle removal zone. The recycled gas is reheated by heat exchange against a portion of the treated gas.Type: GrantFiled: December 20, 1983Date of Patent: March 12, 1985Assignee: UOP Inc.Inventor: James T. Forbes
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Patent number: 4503274Abstract: The reduction of an aqueous solution of a carbohydrate to its polyols using as a catalyst zerovalent ruthenium on a hydrothermally stable support can be further improved using the catalyst resulting from production of zerovalent ruthenium by reduction in hydrogen at a temperature in the range 100.degree.-300.degree. C. Reduction of a ruthenium compound to afford zerovalent ruthenium at these lower temperatures affords a more active catalyst.Type: GrantFiled: August 8, 1983Date of Patent: March 5, 1985Assignee: UOP Inc.Inventor: Blaise J. Arena
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Patent number: 4503269Abstract: An improvement in a process for the isomerization of cresols may be obtained by effecting the isomerization reaction of a cresol in the presence of a crystalline aluminosilicate zeolite catalyst and added hydrogen. The added hydrogen will provide stability and longer life to the catalyst as well as a more stable selectivity to the desired isomers. The isomerization reaction is effected at temperatures ranging from about 250.degree. to about 450.degree. C. and pressures ranging from 2 to about 75 atmospheres in the presence of added hydrogen, said hydrogen being present in a mole ratio in the range of from about 1:1 to about 10:1 moles of hydrogen per mole of cresol.Type: GrantFiled: September 21, 1983Date of Patent: March 5, 1985Assignee: UOP Inc.Inventors: Dusan J. Engel, Thomas P. Malloy, James P. Shoffner
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Patent number: 4501655Abstract: A process is provided for the hydrocracking of a hydrocarbon charge stock which comprises reacting the charge stock with hydrogen at hydrocracking conversion conditions in contact with a catalytic composite comprising a combination of a Group VIB metal component, Group VIII metal component, and a fluorine component present in an amount ranging from 1 to 3 wt. %, on an elemental basis, based on the composite, with a silica-thoria carrier material wherein the carrier is cogelled silica-thoria consisting of from about 25% to about 99% by weight silica and from 1% to about 75% by weight thoria.A hydrocracking catalyst is also provided which comprises a combination of a nickel component, a tungsten component, and a fluorine component with a silica-thoria carrier material. The nickel, tungsten, and fluorine components are present in amounts sufficient to result in the composite containing, on an elemental basis, about 0.5 to about 2 wt. % of the nickel component, about 0.5 to about 14 wt.Type: GrantFiled: March 30, 1984Date of Patent: February 26, 1985Assignee: UOP Inc.Inventors: Lee Hilfman, Mark J. O'Hara
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Patent number: 4501675Abstract: Petroleum may be recovered from subterranean formation in an enhanced oil recovery process by utilizing an aqueous surfactant slug comprising a mixture of a sulfonate of a gas oil which has been obtained from the thermal cracking of coal, a lower alkyl alcohol containing from about 3 to about 6 carbon atoms and a non-ionic surfactant comprising an ethoxylated alcohol containing from about 12 to about 15 carbon atoms. The surfactant slug will be present in an amount sufficient to reduce the interfacial tension between the petroleum and water, thus enabling the petroleum to be recovered in an increased amount.Type: GrantFiled: July 18, 1983Date of Patent: February 26, 1985Assignee: UOP Inc.Inventors: Thomas P. Malloy, Raymond J. Swedo
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Patent number: 4498973Abstract: A multiple-stage catalytic conversion system in which a hydrocarbonaceous charge stock and hydrogen flow serially through a plurality of catalytic reaction zones in each of which the catalyst particles are movable via gravity flow. Dissimilar catalyst particles are utilized in the reactor systems which share a common regenerating tower through which the catalyst particles are downwardly movable via gravity flow and in which the catalyst particles are regenerated in segregated fashion. Dissimilarity of the catalyst particles stems from a difference in activity, stability and selectivity characteristics. In turn, this difference may be attributed either to physical, or chemical distinctions between the two composites, or both.Type: GrantFiled: June 17, 1983Date of Patent: February 12, 1985Assignee: UOP Inc.Inventors: John G. Sikonia, Richard W. Bennett
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Patent number: 4499201Abstract: Carbonaceous pyropolymers possessing recurring units containing at least carbon and hydrogen atoms may be obtained from compositions of matter comprising carbonaceous pyropolymers possessing recurring units containing at least carbon and hydrogen atoms composited on an inorganic metal oxide support or substrate by treating the composition of matter with a chloride-containing compound at an elevated temperature in the range of from about 400.degree. to about 1000.degree. C. in the vapor phase. The resulting metal chloride such as aluminum chloride is continuously removed from the composite, leaving only the carbonaceous pyropolymer.Type: GrantFiled: May 19, 1983Date of Patent: February 12, 1985Assignee: UOP Inc.Inventor: Richard W. Leyerle
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Patent number: 4497972Abstract: A process for separating ethylbenzene from a feed mixture comprising ethylbenzene and at least one xylene isomer. The mixture is contacted with an adsorbent comprising a barium cation exchanged type-X zeolite containing from about 3.0 to about 6.0 wt. % H.sub.2 O. The unadsorbed portion of the feed mixture is removed from the adsorbent and the ethylbenzene recovered by desorption with benzene.Type: GrantFiled: October 11, 1983Date of Patent: February 5, 1985Assignee: UOP Inc.Inventors: Richard W. Neuzil, Simon H. Hobbs
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Patent number: 4496780Abstract: Polyols such as carbohydrates including glucose, fructose, sorbitol, etc. may be subjected to a hydrocracking process to obtain lower polyols such as glycerol, ethylene glycol, 1,2-propanediol. The catalyst system which is used to effect this reaction will comprise a noble metal of Group VIII of the Periodic Table composited on a solid support plus an alkaline earth metal oxide, an example of this catalyst system being ruthenium composited on a titanited alumina support plus barium oxide.Type: GrantFiled: June 22, 1983Date of Patent: January 29, 1985Assignee: UOP Inc.Inventor: Blaise J. Arena
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Patent number: 4496190Abstract: Parallel folding armrest assembly for use on a vehicle seat has a rear hollow housing portion with a forward armrest portion pivotally mounted at its forward end for movement between several parallel positions including a low position which can form a seat cushion extension. The housing portion comprises one elongated element of a four-link parallelogram linkage and has a curved upper forward end surface which conceals the linkage and prevents any possibility of finger pinching during adjustment. An actuating lever positioned in the armrest can be manually lifted about a pivot pin to release a locking pawl slidably carried on one of the parallelogram links from engagement with a selected tooth of a curved rack attached interiorly of the aforementioned curved end surface. A single round bar pivotally supports the housing and is adapted to be demountably fixed to the rear short parallelogram link.Type: GrantFiled: February 10, 1983Date of Patent: January 29, 1985Assignee: UOP Inc.Inventor: Geoffrey W. Barley
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Patent number: 4496371Abstract: A gas treating process is disclosed. Hydrogen sulfide and carbon dioxide are removed from a hydrocarbon vapor stream by absorption into an aqueous carbonate solution. Hydrogen sulfide picked up by the circulating carbonate solution is oxidized to produce liquid sulfur, which is withdrawn. The carbonate solution is then stripped to release carbon dioxide and produce the lean carbonate solution used for absorption. By-product thiosulfate formed in the oxidation step is eliminated by reaction with hydrogen sulfide. Metal phthalocyanines are used as the catalyst for the elimination of thiosulfate and for the oxidation of hydrogen sulfide.Type: GrantFiled: September 21, 1983Date of Patent: January 29, 1985Assignee: UOP Inc.Inventors: Peter Urban, Russell W. Johnson
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Patent number: 4494794Abstract: This invention relates to a vehicle seat of the type in which a seat part is supported and guided for upward and downward movement relative to a base part by a spring suspension.In order to avoid loss of contact between the feet of the seat occupant and control pedals of the vehicle, the suspension includes linkages connecting the seat part to the base part for relative movement such that the seat occupant's ankles remain stationary whereas his knees swing about an axis through his ankles.Type: GrantFiled: May 16, 1979Date of Patent: January 22, 1985Assignee: UOP Inc.Inventor: Geoffrey W. Barley
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Patent number: 4495106Abstract: This invention comprises a process for separating a fatty acid from a mixture comprising a fatty acid and a rosin acid, which process comprises contacting the mixture at separation conditions with a molecular sieve comprising silicalite in a silica matrix the precursor of the molecular sieve comprising silicalite powder dispersed in colloidal amorphous silica, the precursor having been gelled and then treated in a manner to substantially eliminate hydroxyl groups from the molecular sieve, thereby selectively retaining the fatty acid. The fatty acid is recovered from the molecular sieve by displacement with a displacement material comprising an organic acid.Type: GrantFiled: August 13, 1982Date of Patent: January 22, 1985Assignee: UOP Inc.Inventors: Michael T. Cleary, William C. Laughlin
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Patent number: 4492614Abstract: Apparatus and method for detecting and measuring chloride ion and therefore dissociable chlorine compounds using a solid electrolyte concentration cell. Applicable only to gaseous samples.Type: GrantFiled: July 8, 1983Date of Patent: January 8, 1985Assignee: UOP Inc.Inventor: Lawrence B. Welsh
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Patent number: 4491565Abstract: A liquid-liquid contacting apparatus is disclosed. The apparatus is useful in extracting mercaptans from a hydrocarbon stream such as cracked gasoline by nonturbulent countercurrent contacting of the hydrocarbon stream with an aqueous caustic solution. The denser liquid phase flows downward from an upper phase separation zone through a connecting cylindrical contacting zone into a lower phase separation zone. Liquid withdrawal and addition means communicate with each separation zone. A mass of fibrous contacting strands is suspended in the contacting zone. The contacting strands are preferentially wetted by either of the two liquid phases to provide a large surface area which enhances extraction capacity.Type: GrantFiled: January 20, 1983Date of Patent: January 1, 1985Assignee: UOP Inc.Inventor: Thomas A. Verachtert
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Patent number: 4489978Abstract: Support structure for a multi-passenger seating unit, especially in aircraft, which is mounted to a seat track in the vehicle floor, includes a transverse floor stretcher tube of less length than the seating unit which is adapted to lie on the floor at the rear of the seating unit and be attached to at least a pair of seat tracks by a track fitting. The rear seat legs extend downwardly from an upper seat frame portion and are mounted to the floor stretcher tube at selected locations which are spaced from the track fittings so as to generally equalize the luggage storage space under each seat. In a preferred embodiment, a tension bracing member is also attached to the lower ends of each of the rear legs and to the floor stretcher tube and extends forwardly and upwardly to a point where it is attached to portions of the upper seat frame at locations which are spaced transversely from the front legs of the seat.Type: GrantFiled: September 23, 1982Date of Patent: December 25, 1984Assignee: PTC Aerospace Inc.Inventor: Edward J. Brennan
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Patent number: 4490571Abstract: An oligomerization process is effected by treating olefinic hydrocarbons containing from 2 to about 6 carbon atoms in the presence of a catalyst comprising boron fluoride composited on an alumina support. The catalyst is treated with an additive comprising an oxygen or nitrogen-containing compound either prior to or during the process whereby the product which is obtained from the reaction will contain oligomer isomers possessing minimal branching.Type: GrantFiled: October 5, 1983Date of Patent: December 25, 1984Assignee: UOP Inc.Inventors: Mark J. O'Hara, Tamotsu Imai
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Patent number: 4489592Abstract: Methods and apparatus for determining density of gases and vapors. The primary sensing device is a fluidic oscillator through which a sample of gas is passed.Type: GrantFiled: February 22, 1983Date of Patent: December 25, 1984Assignee: UOP Inc.Inventors: Ronald F. Pacanowski, Robert W. Sampson, Paul J. Kuchar