Irradiation By, Or Application Of, Electrical, Magnetic Or Wave Energy Patents (Class 502/5)
  • Patent number: 5411649
    Abstract: Catalytic process for controlled oxidation of methane using microwaves, characterized in that it makes use of a catalyst exhibiting in its structure electrical charge defects and geometric deformations enabling it to absorb electromagnetic energy, or microwaves, under the effect of an electromagnetic field.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: May 2, 1995
    Assignee: Electricite De France, Service National
    Inventors: Georges Roussy, Christophe Marchand, Jean-Marie Thiebaut, Mina Souiri, Alain Kiennemann, Corinne Petit, Gilbert Maire
  • Patent number: 5406582
    Abstract: An apparatus and process for the activation or reactivation of carbon in a tubular reactor that consists of two or more sequential sections, each section containing a descending column of carbon, with inlets to introduce steam into any one or more of the sections, and wherein the electric current is fed into the column of carbon of each such section via a graphite block serving as an electrode and positioned at the center of the top of the column by attachment to a steel plate that includes a flat or a V-shaped shelf and that is provided with openings to allow the released gases and vapors to escape.
    Type: Grant
    Filed: August 3, 1993
    Date of Patent: April 11, 1995
    Inventor: Cornelius du Plessis
  • Patent number: 5384295
    Abstract: The method enables the creation of a pillared layered clay (a PILC) by contacting the clay with a pillaring precursor and delivering energy to the reaction mixture to intercalate the precursor into the clay. The pillaring precursor is an electrically neutral organometallic molecule with a carbon-metal bond which is susceptible to proton attack whereby protons donated from sites of Bronsted acidity in the clay cleave the carbon-metal bond to yield an organic fragment of the precursor and a metal-containing pillaring fragment. A preferred precursor is Ph.sub.2 SnCl.sub.2.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: January 24, 1995
    Assignee: British Technology Group Limited
    Inventors: William R. McWhinnie, Stephen P. Bond
  • Patent number: 5369072
    Abstract: Adsorbent media are prepared by contacting support material with iron containing solutions, followed by drying to coat the support material with iron. Support materials such as sand and olivine are described. The adsorbent material can be used to remove metal contaminants and natural organic matter from water.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: November 29, 1994
    Assignee: University of Washington
    Inventors: Mark M. Benjamin, Robert P. Bailey, Thomas E. Bennett, Yu-Jung Chang, Chi-Wang Li, Marc A. Edwards, Paul R. Anderson
  • Patent number: 5364821
    Abstract: A method of producing active carbon by microwave-induced pyrolysis of a carbonaceous material in an atmosphere wherein flame generation is prevented. The resulting product is treated with an acid to wash out sulphur or metal values and then activated with superheated steam and/or carbon dioxide at an elevated temperature.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: November 15, 1994
    Inventor: Kenneth M. Holland
  • Patent number: 5316990
    Abstract: An improved catalyst material is derived from a precious metal-containing macrocyclic compound precursor, which contains precious metal in zero oxidation state. The material may be produced by activating the compound, for example by a voltage sweep. The material offers useful improvements in activity and resistance to de-activation, when used as a fuel cell catalyst.
    Type: Grant
    Filed: April 23, 1992
    Date of Patent: May 31, 1994
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Susan J. Cooper, Graham A. Hards, David Thompsett
  • Patent number: 5306675
    Abstract: A method of producing crack-free green activated carbon structures using a carbon matrix containing high gel strength binders such as methyl cellulose binders is disclosed. The invention also relates to a method of drying activated carbon structures by first contacting the structure with microwave radiation and then drying the structure in a conventional oven.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: April 26, 1994
    Assignee: Corning Incorporated
    Inventors: Shy-Hsien Wu, Evelyn M. DeLiso
  • Patent number: 5287383
    Abstract: An apparatus for producing an active carbon using a carbon-containing material inclusive of an used active carbon as a raw material wherein the carbon-containing raw material is carbonized in a carbonizing unit to produce a carbonized material having electric conductivity and the carbonized material is then activated in an activating treatment unit installed downstream of the carbonizing unit in an atmosphere of steam with a power of electricity induced by electric discharge as well as a function of self-heating of the carbonized material with its own electric resistance are disclosed. The carbonizing unit is constructed in the form of a thermal radiation type batch furnace including an outer wall and a vessel mounted on a firing lattice in the outer wall while a heating chamber is formed therebetween.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: February 15, 1994
    Assignee: Heiyo Shoji Kabushiki Kaisha
    Inventor: Yoji Hirai
  • Patent number: 5277770
    Abstract: Plasma initiators that have become deactivated due to the accumulation of carbonaceous deposits, sulfur deposits, or both thereon can be regenerated by contact with an oxygen-containing gas in the presence of microwave radiation.
    Type: Grant
    Filed: May 3, 1991
    Date of Patent: January 11, 1994
    Assignee: Exxon Research & Engineering Co.
    Inventor: William J. Murphy
  • Patent number: 5277771
    Abstract: Plasma initiators that have become deactivated due to the accumulation of carbonaceous deposits, sulfur deposits, or both thereon can be regenerated by contact with a gas containing molecular hydrogen in the presence of microwave radiation.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: January 11, 1994
    Assignee: Exxon Research & Engineering Company
    Inventors: William J. Murphy, Alberto Ravella
  • Patent number: 5268343
    Abstract: The invention relates to a process for the reactivation of an activated charcoal catalyst employed in the preparation of 1,1,1,2,3,3,3-heptafluoropropane (R 227) in which the catalyst is heated to from 450.degree. to 900.degree. C. in a stream of inert gas or under reduced pressure.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: December 7, 1993
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Peter Hopp, Uwe Wirth
  • Patent number: 5266540
    Abstract: The regeneration of active carbon onto which one or more organic substances may be adsorbed is achieved by means of a photodegrading process catalyzed by a semiconductor.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: November 30, 1993
    Assignee: Eniricerche S.p.A.
    Inventors: Roberto Menicagli, Fausto Miano, Enrico Borgarello
  • Patent number: 5264404
    Abstract: A porous clay composite having fine metal particles deposited substantially only on surfaces of inorganic particles which are intercalated between layers of an expandable clay is obtained. After the expandable clay is expanded with a solvent into an expanded clay, the inorganic particles are intercalated between the layers of the expanded clay. The inorganic particles have photo-semiconducting property, that is, a plurality of carriers such as electrons and holes are released from the inorganic particles by irradiation of a light such as ultraviolet light. A solution including metal ions is mixed with the inorganic particles intercalated clay to form a mixed solution thereof. Subsequently, the light is irradiated to the mixed solution to deposit the fine metal particles substantially only on the inorganic particles which are intercalated between the layers of the expanded clay, so that the porous clay composite is formed in the mixed solution.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: November 23, 1993
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Koichi Takahama, Masaru Yokoyama, Toshiharu Sako
  • Patent number: 5250482
    Abstract: A process for beneficiating a particulate zeolite petroleum cracking catalyst having metal values in excess of 1000 ppm nickel equivalents. The particulate catalyst is passed through a magnetic field in the range of from about 2 Tesla to about 5 Tesla generated by a superconducting quadrupole open-gradient magnetic system for a time sufficient to effect separation of said catalyst into a plurality of zones having different nickel equivalent concentrations. A first zone has nickel equivalents of about 6,000 ppm and greater, a second zone has nickel equivalents in the range of from about 2000 ppm to about 6000 ppm, and a third zone has nickel equivalents of about 2000 ppm and less. The zones of catalyst are separated and the second zone material is recycled to a fluidized bed of zeolite petroleum cracking catalyst. The low nickel equivalent zone is treated while the high nickel equivalent zone is discarded.
    Type: Grant
    Filed: August 20, 1992
    Date of Patent: October 5, 1993
    Assignee: University of Chicago
    Inventor: Richard D. Doctor
  • Patent number: 5244566
    Abstract: A process is shown for deabsorbing oil from an oil absorbent material. A citric oil-in-water emulsion is formulated having an aqueous external phase and having a dispersed internal phase which is comprised of a distilled citric oil. The hydrocarbon contaminated material is immersed within the citric oil-in-water emulsion, whereby absorbed hydrocarbons are extracted from the oil absorbent material.
    Type: Grant
    Filed: June 21, 1991
    Date of Patent: September 14, 1993
    Assignee: Insight Environmental Services, Inc.
    Inventor: Gordon S. Bond
  • Patent number: 5238888
    Abstract: Provided are carbon molecular sieves produced by treating carbonacious materials with plasma. One of their most important uses is adsorbent for pressure swing adsorption processes, which are widely used for the separation of gases on industrial scales. The carbon molecular sieves meet the strong demand in this field where the performance of the adsorbent used governs the efficiency of gas separation.The carbon molecular sieves of the present invention are particularly effective in separating nitrogen gas from air.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: August 24, 1993
    Assignee: Kuraray Chemical Co., Ltd.
    Inventor: Kunio Abe
  • Patent number: 5232882
    Abstract: Regeneration of an ozone decomposing reactor which comprises:a catalyst structure composed of a carrier having at least one passage extending therethrough for allowing an ozone containing fluid to pass through the catalyst structure and a catalyst and an electroconductive material carried in or on the carrier; andelectrodes attached to the catalyst structure to electrify the structure, whereby to decompose ozone at elevated temperatures and regenerating deactivated structure by electrifying and heating.The carrier is either a ceramic honeycomb mold or a fiber board.
    Type: Grant
    Filed: January 29, 1992
    Date of Patent: August 3, 1993
    Assignee: Sakai Chemical Industry Co., Ltd.
    Inventors: Masafumi Yoshimoto, Tadao Nakatsuji, Kazuhiko Nagano, Tetsuo Tatsu
  • Patent number: 5232883
    Abstract: Process for obtaining monodisperse microspheroidal particles, comprising spraying an electrostatically charged gellable liquid material through a spraying orifice and into a chamber, so as to produce macrodrops which break up into microdrops which fall in the chamber and within which gelling is produced after spraying. The microspheroidal particles thus obtained can be collected on a solid surface or preferably in a liquid medium and find application in the manufacture of silica-based microspheroidal particles. These microspheroidal particles can be employed as catalyst supports for alpha-olefin polymerization.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: August 3, 1993
    Assignee: Solvay (Societe Anonyme)
    Inventors: Helmut Derleth, Abel Grosjean
  • Patent number: 5232559
    Abstract: An organic solution of a soluble molybdenum compound is ammonated with ammonia, ammonium hydroxide and/or an ammonium salt in order to significantly reduce the electrical resistance of the solution and a direct electric current is passed therethrough in order to collect a significant amount of the molybdenum in solid form at the negative electrode.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: August 3, 1993
    Assignee: Texaco Chemical Company
    Inventors: William A. Smith, David L. Miller, Robert A. Meyer
  • Patent number: 5215949
    Abstract: In conventional spraying methods the problem in the preparation of small carrier particles aimed for the polymerization is that the drops constituting the prestages of the particles agglomerate or form otherwise in different sizes, whereby the size distribution of the carrier particles becomes too broad. This leads due to the so-called replica phenomenon to a polymer product having also a too broad particle size distribution. In the present invention the carrier is prepared by spraying a liquid containing a carrier through a nozzle into inert gas so that its first forms small droplets, which then solidify to small carrier particles. The desired narrow particle size distribution is provided by feeding a liquid containing a carrier through a nozzle, in which or in connection with which the liquid drops by means of the standing sonic waves in the ultrasonic range into small droplets of uniform size. The droplets of uniform size solidify then into small carrier particles of equally uniform size.
    Type: Grant
    Filed: October 17, 1990
    Date of Patent: June 1, 1993
    Assignee: Neste Oy
    Inventors: Jukka Koskinen, Ismo Pentti
  • Patent number: 5204302
    Abstract: A multi-layered catalyst on a metal substrate and a method for its preparation is provided. The catalyst includes a substrate, an adhesive sublayer whose improved adhesion to the substrate is obtained by the formation of a diffusion layer between the substrate and adhesive layer, a catalytically active layer deposited on the adhesive sublayer characterized by a smooth compositional gradient of the catalytically active component such that the catalytically active layer ranges from substantially 0.0 wt % at the adhesive sublayer interface to substantially 100 wt % at the outermost portion of the catalytically active layer and a porous layer containing at least the catalytically active component. An activator coating can be applied to the porous layer.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: April 20, 1993
    Assignee: Technalum Research, Inc.
    Inventors: Igor V. Gorynin, Boris V. Farmakovsky, Alexander P. Khinsky, Karina V. Kalogina, Alfredo R. V., Julian Szekely, Navtej S. Saluja
  • Patent number: 5204070
    Abstract: A reactor for processing a catalyst material comprises a reaction chamber including a support for the catalyst material. A laser radiation entry means, a gas inlet and an exhaust are provided, each in communication with the reaction chamber. The gas inlet permits entry in the chamber of an oxidizing gas which assists in processing the catalyst material when exposed to laser radiation entering the chamber. Any resulting exhaust gases are then removed from the chamber through the exhaust. A drive means is provided to move the support in a manner such that the catalyst is moved through the laser radiation. The apparatus is useful in reactivate deactivated catalysts, such as hydroprocessing catalysts.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: April 20, 1993
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Energy, Mines and Resources Canada
    Inventors: Michael F. Wilson, Thomas M. Steel, Walter W. Duley
  • Patent number: 5198098
    Abstract: An improved catalytic process for heavy hydrocarbon conversion, (usually, but not necessarily, in the presence of nickel and vanadium on the catalyst and in the feedstock.) to produce lighter molecular weight fractions. Manganese, which has paramagnetic properties, is added so it progressively accumulates on aged catalyst, and enhances magnetic separation of aged catalyst, to increase activity and improve selectivity of remaining catalyst which is recycled. Manganese acts as a "magnetic hook" to separate more magnetic, older, less catalytically active and less selective, higher-metals-containing catalyst particulates from less-magnetically-active, lower-metal-containing, more catalytically active and selective catalysts fractions, which are then recycled back to the unit.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: March 30, 1993
    Assignee: Ashland Oil, Inc.
    Inventor: William P. Hettinger
  • Patent number: 5190901
    Abstract: A method and an apparatus for producing an active carbon using a carbon-containing material inclusive of an used active carbon as a raw material wherein the carbon-containing raw material is carbonized in a carbonizing unit to produce a carbonized material having electric conductivity and the carbonized material is then activated in an activating treatment unit installed downstream of the carbonizing unit in an atmosphere of steam with a power of electricity induced by electric discharge as well as a function of self-heating of the carbonized material with its own electric resistance are disclosed. The carbonizing unit is constructed in the form of a thermal radiation type batch furnace including an outer wall and a vessel mounted on a firing lattice in the outer wall while a heating chamber is formed therebetween.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: March 2, 1993
    Assignee: Heiyo Shoji Kabushiki Kaisha
    Inventor: Yoji Hirai
  • Patent number: 5190907
    Abstract: A granulated inorganic sorbent having the formula:Ti.sub.x Zr.sub.y Sn.sub.1-x-y O.sub.2.nH.sub.2 Owhere 0<x+y<1, x=0-0.95, y=0-0.15, n=0.05-1.8, has a specific surface of 30-250 m.sup.2 /g and represents a solid solution with a rutile type structure characterized by principal peaks at the angle 2.theta. equal to 26.8.+-.0.7, 34.5.+-.1.5, 52.8.+-.1.5 degrees.The method of its manufacture comprises electrolysis of an aqueous solution containing tin chloride, titanium chloride and/or zirconium chloride at a molar ratio Ti:Zr:Sn=(0-0.95):(0.0.15):(0.03-1.0), followed by dropwise dispersion of the formed sol in a gelling liquid at pH.gtoreq.12 and heat treatment of the gel particles at a temperature within 20.degree. to 900.degree. C.
    Type: Grant
    Filed: March 29, 1991
    Date of Patent: March 2, 1993
    Inventors: Leonid M. Sharygin, Vladimir I. Barybin, Valery F. Gonchar, Olga J. Smyshlyaeva, Anatoly P. Shtin, Sergei Y. Tretyakov, Valery E. Moiseev, Tatyana N. Perekhozhiva, Vladimir M. Galkin, Alma V. Korenkova, Elena I. Zlokazova, Sergei M. Vovk, Valery G. Ponomarev
  • Patent number: 5187131
    Abstract: Method and apparatus for in-situ regeneration of particulate adsorbent in a vessel including: heating the adsorbent, passing inert gas through heated absorbent to collect vaporized adsorbate, chilling the inert gas to condense adsorbate, thereafter lowering the pressure within the vessel, collecting withdrawn gases containing volatilized adsorbate, and chilling the withdrawn gases to condense adsorbate.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: February 16, 1993
    Assignee: Tigg Corporation
    Inventors: Donald D. Tiggelbeck, George M. Goyak
  • Patent number: 5186903
    Abstract: Apparatus for purifying indoor air comprises a blower for circulating air through a duct and removing particles and neutralizing a number of harmful gases through a process of molecular catalytic cracking of heavy hydrocarbons at ambient temperatures. Preferably, the apparatus includes a series of treatment elements including an ozone generator for producing a oxidator gas, a bio-mass collector, a filter coated with zeolite and surface modified hopcalite for removal of CO and NO.sub.x compounds, a filter coated with calcium carbonate for removing carbon dioxide and hydrohalic compounds, a filter coated with zeolite for solvents such as MEK and adsorbing water, and one or more filters for removing particulates in the air stream. The filters thus remove particulates and neutralize a number of harmful gases that may be present in indoor air.
    Type: Grant
    Filed: September 27, 1991
    Date of Patent: February 16, 1993
    Assignee: North Carolina Center for Scientific Research, Inc.
    Inventor: James H. Cornwell
  • Patent number: 5173921
    Abstract: In an apparatus and process for the activation of carbon from carbon feedstocks by electrical resistance heating in the presence of steam, which comprises preheating particles of the carbon feedstock in a preheater, having the particles descend by gravity into and through a vertical reactor connected to the preheater, introducing steam at the bottom of the reactor so that it moves upward against the downward flow of the particles, passing an electric current through the particles in the reactor, and discharging the activated carbon from the bottom of the reactor, the improvements that comprise feeding the carbon feedstock through the side of the preheater, controlling the electric input, having the reactor project into the preheater, using a knife-gate valve and a discharge-limiting device to control the discharge of the activated carbon, using a carbon feedstock that contains up to about 25% of organic volatiles, maintaining the preheating temperature within a range from about 550.degree. C. to about 750.
    Type: Grant
    Filed: October 31, 1991
    Date of Patent: December 22, 1992
    Inventors: E. Mervyn J. Gaylord, Cornelius J. du Plessis
  • Patent number: 5169517
    Abstract: Process for the treatment of a hydrocarbon fraction containing metals and comprising the following stages: (a) the said hydrocarbon fraction is treated in the presence of mean density particles (d.sub.o) under conditions for eliminating at least partly the metals contained therein and deposits of said metals on at least one fraction of said solid particles; (b) at least part of the solid particles from stage (a), whose mean density is (d.sub.i) is drawn off; (c) said solid particles from stage (b) are magnetohydrostatically separated by introducing said solid particles into a ferrofluid placed in a non-uniform magnetic field and creating a vertical magnetic field, whose intensity is adjusted in such a way that the apparent mean density (d.sub.af) of the ferrofluid permits the separation of said solid particles into at least one mean density fraction (d.sub.i) below said apparent mean density (d.sub.af) of the ferrofluid and into at least one mean density fraction (d.sub.s) above said mean apparent density (d.
    Type: Grant
    Filed: August 2, 1990
    Date of Patent: December 8, 1992
    Assignee: Institut Francais du Petrole
    Inventors: Andre Buisson, Jean-Paul Euzen, Frederic Morel
  • Patent number: 5165909
    Abstract: The invention relates to carbon fibrils characterized by a substantially constant diameter, length greater than about 5 times the diameter, an ordered outer region of catalytically grown, multiple, substantially continuous layers of ordered carbon atoms having an outside diameter between about 3.5 and 70 nanometers, and a distinct inner core region. Each of the layers and the core are disposed substantially concentrically about the cylindrical axis of the fibril. The fibrils are substantially free of pyrolytically deposited thermal carbon with the diameter of the fibrils being equal to the outside diameter of the ordered outer region.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: November 24, 1992
    Assignee: Hyperion Catalysis Int'l., Inc.
    Inventors: Howard G. Tennent, James J. Barber, Robert Hoch
  • Patent number: 5147527
    Abstract: One embodiment is an improved process for economically converting carbo-metallic oils by means of catalytic particulates into lighter products, wherein a portion of the particulates is withdrawn and passed through a high strength magnetic field of at least 1 KG and field grandients of at least 10 KG/inch while conveyed on an electrostatic conducting belt to enable separation of the mass of particulates by inertia into at least two fractions; one of which has, in the case of catalyst, higher activity and lower metals content and is recycled back to the unit; a second higher metals, lower activity catalyst which is disposed of or treated for recovery of metals; and optimally, intermediate fraction which can be disposed of, or first treated to remove metals, and then chemically reactivated and returned to the unit.
    Type: Grant
    Filed: April 3, 1989
    Date of Patent: September 15, 1992
    Assignee: Ashland Oil, Inc.
    Inventor: William P. Hettinger
  • Patent number: 5132270
    Abstract: Deactivated hydrogenation catalysts of ruthenium metal deposited on an aluminum oxide support are regenerated by treatment with ultrasound.
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: July 21, 1992
    Assignee: Huels Aktiengesellschaft
    Inventors: Gerhard Wachholz, Gerhard Thelen, Heinz-Werner Voges
  • Patent number: 5093302
    Abstract: A radioactive catalyst is disclosed which comprises a fine particle of semiconductor and a high radioactive platinum group element deposited on the particle of semiconductor. The radioactive catalyst serves as a source of radiation and also as a catalyst for oxidation-reduction reaction. By bringing the radioactive catalyst into contact with water, the water is decomposed by the oxidation-reduction reaction to produce hydrogen and oxygen.
    Type: Grant
    Filed: December 21, 1990
    Date of Patent: March 3, 1992
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventors: Nobuyuki Sasao, Yukio Wada
  • Patent number: 5089457
    Abstract: In an apparatus and process for the activation of carbon from carbon feedstocks by electrical resistance heating in the presence of steam, which comprises preheating particles of the carbon feedstock in a preheater, having the particles descend by gravity into and through a vertical reactor connected to the preheater, introducing steam at the bottom of the reactor so that it moves upward against the downward flow of the particles, passing an electric current through the particles in the reactor, and discharging the activated carbon from the bottom of the reactor, the improvements that comprise feeding the carbon feedstock through the side of the preheater, controlling the electric input, having the reactor project into the preheater, using a knife-gate valve and a discharge-limiting device to control the discharge of the activated carbon, using a carbon feedstock that contains up to about 25% of organic volatiles, maintaining the preheating temperature within a range from about 550.degree. C. to about 750.
    Type: Grant
    Filed: January 4, 1991
    Date of Patent: February 18, 1992
    Inventors: E. Mervyn J. Gaylard, Cornelius J. DuPlessis
  • Patent number: 5078971
    Abstract: A deodorizer device for use in a refrigerator has an absorbent capable of absorbing odor components from air, a layer of a photocatalyst deposited on the surface of the absorbent, and a light source for illuminating the photocatalyst layer to excite the same. Air containinig odor components is forced by a blower to flow through the absorbent.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: January 7, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Michiya Matuda, Tooru Kobayashi, Fumikazu Washimi, Masaei Kawashima, Masaaki Kashiwabuchi, Kikuzi Takahashi, Atsushi Kanai
  • Patent number: 5077249
    Abstract: The present invention provides microencapsulated liquid or solubilized curing catalysts for one-part heat curable organosiloxane compositions. Compositions containing these exhibit long-term storage stability yet cure rapidly when heated above the melting point of the encapsulating polymer. At least a portion of these microcapsules are less than one micron in diameter, and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.The microencapsulated curing catalysts of this invention are prepared by the photoinitiated polymerization of at least one solubilized hydroxyl-containing ethylenically unsaturated organic compound in the presence of a photoinitiator for the polymerization of said compound, an optional surfactant, and a liquid or solubilized curing catalyst for organosiloxane compositions.
    Type: Grant
    Filed: March 21, 1991
    Date of Patent: December 31, 1991
    Assignee: Dow Corning Corporation
    Inventors: Chi-Long Lee, Ming-Hsiung Yeh
  • Patent number: 5068485
    Abstract: Aluminophosphate molecular sieves substituted with cobalt, manganese or iron and having the AlPO.sub.4 -34 or AlPO.sub.4 -5, or related AlPO.sub.4 structure activate methane starting at approximately 350.degree. C. Between 400.degree. and 500.degree. C. and at methane pressures .ltoreq.1 atmosphere the rate of methane conversion increases steadily with typical conversion efficiencies at 500.degree. C. approaching 50% and selectivity to the production of C.sub.2+ hydrocarbons approaching 100%. The activation mechanism is based on reduction of the transition metal(III) form of the molecular sieve to the transition metal(II) form with accompanying oxidative dehydrogenation of the methane. Reoxidation of the - transition metal(II) form to the transition metal(III) form can be done either chemically (e.g., using O.sub.2) or electrochemically.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: November 26, 1991
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Lennox E. Iton, Victor A. Maroni
  • Patent number: 5047376
    Abstract: The present invention relates to activated curing combinations for organic cationically polymerizable materials. The curing combinations are obtainable by activating a solution or a dispersion of an iron/arene salt and a polycarboxylic acid, an anhydride based on a polycarboxylic acid, or a polyisocyanate by heating or by irradiation with actinic radiation. The curable compositions containing these activated curing combinations can be used as sheathing or encapsulating materials for electronic components.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: September 10, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Dieter Baumann, Kurt Meier, Werner Margotte, Beat Muller
  • Patent number: 5037785
    Abstract: A process for regeneration of a deactivated hydroprocessing catalyst is provided. The process comprises exposing the catalyst to laser radiation in the presence of an oxidizing gas. The process may be used to regenerate supported or unsupported metal catalysts which have been fouled by coking.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: August 6, 1991
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of Energy, Mines and Resources
    Inventors: Michael F. Wilson, Thomas M. Steel, Walter W. Duley
  • Patent number: 5011755
    Abstract: The present invention relates to compositions comprising(a) a titanocene photoinitiator of the formula I ##STR1## (b) a 3-ketocoumarin of the formula II ##STR2## in which both R.sup.1, R.sup.2 and R.sup.3 are as defined in claim 1, R.sup.4 is a radical of the formula V ##STR3## R.sup.5 is C.sub.1 -C.sub.20 alkyl, cycloalkyl having 5-7 ring carbon atoms, phenyl or naphthyl which are unsubstituted or substituted by one to three C.sub.1 -C.sub.6 alkyl groups, C.sub.1 -C.sub.6 alkoxy groups or halogen atoms or by one diphenylamino or C.sub.1 -C.sub.6 dialkylamino group, or is C.sub.7 -C.sub.9 aralkyl, a radical --(CH.dbd.CH).sub.a --C.sub.6 H.sub.5 or a radical of the formula V, a is 1 or 2, preferably 1, and R.sup.10, R.sup.11, R.sup.12, R.sup.13 and R.sup.14 independently of one another are hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, phenyl, tolyl, xylyl or benzyl, and R.sup.11 can additionally also be a group --NR.sup.15 R.sup.16 or --OR.sup.15, wherein R.sup.15 and R.sup.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: April 30, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Ottmar Rohde, Armin Schaffner, Martin Riediker, Kurt Meier
  • Patent number: 5008302
    Abstract: Titanocenes containing two 5-membered cyclodienyl groups, for example cyclopentadienyl, and one or two 6-membered carbocyclic or 5- or 6-membered heterocyclic aromatic rings which are substituted by a fluorine atom in at least one of the two ortho-positions to the titanium-carbon bond and contain, as a further substituent, unsubstituted or substituted 1-pyrryl, are suitable as photoinitiators for radiation-induced polymerization of ethylenically unsaturated compounds.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: April 16, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Rinaldo Husler, Bernd Klingert, Manfred Rembold, Eginhard Steiner
  • Patent number: 4994422
    Abstract: Means and methods of producing catalytically coated microspheres of hydrocarbon fuel in a tower into which precharged free floating initially frozen globules of hydrocarbon fuel are drawn through a catalytic plasma field by an attracting electrostatic force disposed thereabove for catalytic coating and partial neutralization of the globule precharge until the coated globules descends in response to gravitational forces through the plasma field into a container disposed therebeneath.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: February 19, 1991
    Assignee: Fuel Conservation Corporation
    Inventor: Stuart O. Goldman
  • Patent number: 4992614
    Abstract: A solid catalyst composition which has undergone a partial loss of catalytic activity due to the accumulation of reaction product residue is treated in a chemical conversion process reaction zone in the presence of feedstock(s) with ultrasonic energy of a magnitude and a duration sufficient to restore at least a significant percentage of the lost activity.
    Type: Grant
    Filed: October 2, 1989
    Date of Patent: February 12, 1991
    Assignee: Mobil Oil Corp.
    Inventor: Paul G. Rodewald
  • Patent number: 4955208
    Abstract: A photocatalystic decomposing apparatus comprises absorbent including honeycomb form active carbon and titanium oxide acting as photocatalyst applied to a surface of the active carbon, and a light source for generating ultraviolet rays exciting the photocatalyst. Stink ingredient is absorbed to the active carbon by passing air flow through openings in the honeycomb, and the absorbed stink ingredient is decomposed by exciting the photocatalyst due to application of the ultraviolet rays.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: September 11, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Masaei Kawashima, Reishi Naka, Teruo Tsunoda, Nobuyoshi Suenaga, Syozo Ogawa, Masaaki Kashiwabuchi, Miyakichi Kameda, Koosuke Tanaka
  • Patent number: 4954465
    Abstract: A photocatalystic decomposing apparatus comprises absorbent including honeycomb form active carbon and titanium oxide acting as photocatalyst applied to a surface of the active carbon, and a light source for generating ultraviolet rays exciting the photocatalyst. Stink ingredient is absorbed to the active carbon by passing air flow through openings in the honeycomb, and the absorbed stink ingredient is decomposed by exciting the photocatalyst due to application of the ultraviolet rays.
    Type: Grant
    Filed: January 11, 1989
    Date of Patent: September 4, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Masaei Kawashima, Reishi Naka, Teruo Tsunoda, Nobuyoshi Suenaga, Syozo Ogawa, Masaaki Kashiwabuchi, Miyakichi Kameda, Koosuke Tanaka
  • Patent number: 4940648
    Abstract: A photo polymerization initiator composition is disclosed. The composition is comprised of an organic peroxide or perester in admixture with 9-phenyl acridine, or phenazine initiator compound. The initiator composition is useful in preparing photopolymerizable compositions having increased effective photospeed.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: July 10, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Margaret W. Geiger
  • Patent number: 4919804
    Abstract: In a method for producing a reversed phase bonded metal oxide by reacting the metal oxide with a reactive silane, the improvement comprising conducting the reaction in the presence of ultrasonic waves.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: April 24, 1990
    Assignee: University of Florida
    Inventors: John G. Dorsey, Karen B. Sentell, Karen W. Barnes
  • Patent number: 4914004
    Abstract: Radiation-curable two-layer systems containing immobilized photoinitiators are suitable for the production of coatings of constant thickness and good adhesion, and relief structures of high resolution and edge steepness.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: April 3, 1990
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Manfred Kohler, Eike Poetsch, Jorg Ohngemach, Dieter Dorsch, Rudolf Eidenschink, Gerhard Greber
  • Patent number: 4914256
    Abstract: A solid catalyst composition which has undergone a partial loss of catalytic activity due to the accumulation of reaction product residue is treated in a chemical conversion process reaction zone in the presence of feedstock(s) with ultrasonic energy of a magnitude and a duration sufficient to restore at least a significant percentage of the lost activity.
    Type: Grant
    Filed: June 30, 1988
    Date of Patent: April 3, 1990
    Assignee: Mobil Oil Corp.
    Inventor: Paul G. Rodewald
  • Patent number: 4912070
    Abstract: A continuously porous adsorbent material substantially comprising zeolite type clay powder particles, magnetized magnetite particles and ettringite crystals bonding the clay particles and the magnetic particles, wherein the adsorbent material possesses continuous pores comprising relatively large cages connected with one another through smaller channels, the porous material suitable for the purification of various kinds of fluid by adsorption of the impurities contained in the fluid.
    Type: Grant
    Filed: August 2, 1988
    Date of Patent: March 27, 1990
    Assignees: TAC Technology and Science Research Inc., Yoshio Taguchi
    Inventor: Yasumasa Mitani