Patents by Inventor William A. Yuill
William A. Yuill has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8668955Abstract: A single step milling and surface coating process allows for production of a stable dispersion of surface coated nanoparticles in an efficient manner. The process comprises providing feed particles, providing a coating agent, and generating the stable dispersion of surface coated nanoparticles by milling the feed particles in an aqueous medium containing the coating agent such that the coating agent bonds to surfaces of the feed particles as the feed particles are milled to an average particle size of less than about 100 nm.Type: GrantFiled: December 14, 2012Date of Patent: March 11, 2014Assignee: Nanomateriales S.A. de C.V.Inventors: William A. Yuill, Donald D. Gibson, Charles E. Seeney
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Patent number: 8651113Abstract: Magnetically responsive therapeutic carriers comprise nanoparticles including single-domain nanoparticles comprising magnetite and having an average particle size ranging between 1 and 50 nanometers, clusters of the single-domain nanoparticles, the clusters having an average cluster size ranging between 5 and 1000 nanometers, and mixtures of the two. The single-domain nanoparticles are encapsulated with a silica coating. A silane coupling agent is bonded to the silica coating and has a specific pendant functional group capable of selectively binding with the therapeutic. Preferably, the bond between the specific pendant functional group and the therapeutic is a covalent bond. The movement of magnetically responsive nanoparticle therapeutic constructs, with concentration and extravasation/endocytosis at a target site, such as cancerous tumors, uses a controllable magnetic field generator adapted to move the therapeutic constructs in three dimensions, and is enhanced using a repetitively-varying magnetic field.Type: GrantFiled: July 17, 2009Date of Patent: February 18, 2014Assignee: SWR&D Inc.Inventors: Charles E. Seeney, Jim Klostergaard, William A. Yuill, Donald D. Gibson
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Patent number: 8357426Abstract: A single step milling and surface coating process allows for production of a stable dispersion of surface coated nanoparticles in an efficient manner. The process comprises providing feed particles, providing a coating agent, and generating the stable dispersion of surface coated nanoparticles by milling the feed particles in an aqueous medium containing the coating agent such that the coating agent bonds to surfaces of the feed particles as the feed particles are milled to an average particle size of less than about 100 nm.Type: GrantFiled: November 7, 2008Date of Patent: January 22, 2013Assignee: Nanomateriales S.A. de C.V.Inventors: Charles E. Seeney, William A. Yuill, Donald D. Gibson
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Publication number: 20110279944Abstract: The movement of magnetically responsive nanoparticles through a membrane is significantly enhanced by varying the direction of the magnetic field gradient at the membrane. A device for generating the varying-gradient magnetic field includes a primary magnet having a primary magnetic field gradient direction, one or more secondary magnets directed at an acute angle relative to the primary magnetic field gradient direction, and a controller connected to at least the secondary magnets. The controller is operable to repetitively vary the direction of the resultant magnetic field gradient in a pulsating manner.Type: ApplicationFiled: July 22, 2011Publication date: November 17, 2011Inventors: Charles E. Seeney, William A. Yuill
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Patent number: 8001977Abstract: The movement of magnetically responsive nanoparticles through a membrane is significantly enhanced by using a varying magnetic field gradient. The magnetic field varies in intensity and/or direction and can be achieved by mechanically varying the position of a magnet with respect to the membrane, or by oscillating the strength of one or more electromagnets.Type: GrantFiled: April 6, 2006Date of Patent: August 23, 2011Assignee: NanoBioMagnetics, Inc.Inventors: Charles E. Seeney, William A. Yuill
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Publication number: 20110130616Abstract: Magnetically responsive therapeutic carriers comprise nanoparticles including single-domain nanoparticles comprising magnetite and having an average particle size ranging between 1 and 50 nanometers, clusters of the single-domain nanoparticles, the clusters having an average cluster size ranging between 5 and 1000 nanometers, and mixtures of the two. The single-domain nanoparticles are encapsulated with a silica coating. A silane coupling agent is bonded to the silica coating and has a specific pendant functional group capable of selectively binding with the therapeutic. Preferably, the bond between the specific pendant functional group and the therapeutic is a covalent bond. The movement of magnetically responsive nanoparticle therapeutic constructs, with concentration and extravasation/endocytosis at a target site, such as cancerous tumors, uses a controllable magnetic field generator adapted to move the therapeutic constructs in three dimensions, and is enhanced using a repetitively-varying magnetic field.Type: ApplicationFiled: July 17, 2009Publication date: June 2, 2011Inventors: Charles E. Seeney, Jim Klostergaard, William A. Yuill, Donald D. Gibson
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Publication number: 20090180976Abstract: A single step milling and surface coating process allows for production of a stable dispersion of surface coated nanoparticles in an efficient manner. The process comprises providing feed particles, providing a coating agent, and generating the stable dispersion of surface coated nanoparticles by milling the feed particles in an aqueous medium containing the coating agent such that the coating agent bonds to surfaces of the feed particles as the feed particles are milled to an average particle size of less than about 100 nm.Type: ApplicationFiled: November 7, 2008Publication date: July 16, 2009Inventors: Charles E. Seeney, William A. Yuill, Donald D. Gibson
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Publication number: 20060228421Abstract: The movement of magnetically responsive nanoparticles through a membrane is significantly enhanced by using a varying magnetic field gradient. The magnetic field varies in intensity and/or direction and can be achieved by mechanically varying the position of a magnet with respect to the membrane, or by oscillating the strength of one or more electromagnets.Type: ApplicationFiled: April 6, 2006Publication date: October 12, 2006Inventors: Charles Seeney, William Yuill
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Patent number: 6835361Abstract: The present invention provides improved processes and apparatus for reacting high flow rates of one or more gaseous reactants in tubular reactors. The improved processes and apparatus allow such reactions to be carried out with a low pressure drop across the reactor and without excessive erosion due to solid particles carried with or picked up by the gaseous reactants. A process of this invention is basically comprised of the steps of swirling a gaseous reactant which may contain or pick up solid particles in a first annular plenum chamber followed by a second larger diameter annular plenum chamber and then introducing the gaseous reactant and solid particles into a reactor by way of two or more radial slots whereby said gaseous reactant and solid particles are caused to flow into said reactor and are uniformly distributed therein.Type: GrantFiled: March 30, 2001Date of Patent: December 28, 2004Assignee: Kerr-McGee Chemical LLCInventors: William A. Yuill, Charles A. Natalie
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Publication number: 20020192138Abstract: A process for continuously preparing finely divided refractory oxides having a particle specific surface area of less than about 100 m2/g from an oxygen containing reactant gas and at least one reactant selected from the group consisting of vaporous salts of silicon, titanium, aluminum, zirconium, iron and antimony, wherein at least one of the reactant materials is heated by means of a plasma generator which produces a temperature in the range of from about 3,000°-to about 12,000° C., and the reactants are combined and passed into a reaction zone for a period of from about 0.001 to about 1.0 second to give the oxide product. The oxygen-containing gas stream comprises from about 100 to about 105% of the stoichiometric amount of oxygen based on the vaporous salt and from about 10 to about 150%, based on oxygen, of a gaseous diluent which is inert under reaction conditions.Type: ApplicationFiled: June 19, 2001Publication date: December 19, 2002Inventor: William A. Yuill
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Patent number: 6419893Abstract: An improved process for producing titanium dioxide wherein gaseous titanium tetrachloride and oxygen are reacted at a high temperature to produce particulate solid titanium dioxide and gaseous reaction products is provided. The titanium dioxide and gaseous reaction products are cooled by passing them through a tubular heat exchanger along with a scouring medium for removing deposits from the inside surfaces of the tubular heat exchanger. By this invention, the particulate scouring medium, the particulate titanium dioxide and the gaseous reaction products are caused to follow a spiral path as they flow through the tubular heat exchanger whereby the scouring medium more thoroughly removes the deposits and the titanium dioxide and gaseous reaction products are cooled more efficiently.Type: GrantFiled: September 18, 2000Date of Patent: July 16, 2002Assignee: Kerr-McGee Chemical LLCInventors: William A. Yuill, Charles A. Natalie, Harry E. Flynn, Bita Fillipi
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Patent number: 6350427Abstract: Processes for reacting high flow rates of one or more gaseous reactants in tubular reactors. The improved processes allow such reactions to be carried out with a low pressure drop across the reactor and without excessive erosion due to solid particles carried with or picked up by the gaseous reactants. A process of this invention is basically comprised of the steps of swirling a gaseous reactant which may contain or pick up solid particles in a first annular plenum chamber followed by a second larger diameter annular plenum chamber and then introducing the gaseous reactant and solid particles into a reactor by way of two or more radial slots whereby the gaseous reactant and solid particles are caused to flow into the reactor and are uniformly distributed therein.Type: GrantFiled: July 27, 1999Date of Patent: February 26, 2002Assignee: Kerr-McGee Chemical LLCInventors: William A. Yuill, Chuck A. Natalie
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Publication number: 20010021360Abstract: The present invention provides improved processes and apparatus for reacting high flow rates of one or more gaseous reactants in tubular reactors. The improved processes and apparatus allow such reactions to be carried out with a low pressure drop across the reactor and without excessive erosion due to solid particles carried with or picked up by the gaseous reactants. A process of this invention is basically comprised of the steps of swirling a gaseous reactant which may contain or pick up solid particles in a first annular plenum chamber followed by a second larger diameter annular plenum chamber and then introducing the gaseous reactant and solid particles into a reactor by way of two or more radial slots whereby said gaseous reactant and solid particles are caused to flow into said reactor and are uniformly distributed therein.Type: ApplicationFiled: March 30, 2001Publication date: September 13, 2001Inventors: William A. Yuill, Charles A. Natalie
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Patent number: 6207131Abstract: A process for reacting titanium tetrachloride vapors with oxygen to produce titanium dioxide wherein the oxygen is introduced into the reactor in at least two points. The process has the ability to control properties, such as particle size, of the raw pigment produced. The temperature of the oxygen introduced to the reactor at the further inlet point is above, below, or at the same temperature of the oxygen introduced at the first inlet point. The further inlet point can be located before or after the all the titanium tetrachloride has been introduced into the reactor. The titanium tetrachloride is introduced at a relatively low temperature, below about 427° C., and the reaction temperature in the reactor is at least about 700° C. The process includes the use of an auxilary fuel such as carbon monoxide, methane, propane, butane, pentane, hexane, benzene, xylene, toluene, or combinations thereof for increasing the temperature in the reactor.Type: GrantFiled: July 3, 1997Date of Patent: March 27, 2001Assignee: Kerr-McGee Chemical LLCInventors: John C. Magyar, Alan J. Morris, Glenn D. Wootten, William A. Yuill
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Patent number: 6004519Abstract: The recovery of aluminum chloride from deactivated alkylation catalyst complexes by hydrogenation using hydrogen gas and an aluminum catalyst is disclosed. Using aluminum to catalyze the hydrogenation allows the reaction to proceed at a lower temperature and pressure while reducing the amount of hydrogen chloride present in the reactor thus reducing the corrosiveness and cost of the aluminum chloride recovery. Methods for batch, batchwise continuous, and continuous aluminum chloride recovery are disclosed.Type: GrantFiled: January 2, 1997Date of Patent: December 21, 1999Assignee: Kerr-McGee CorporationInventors: Elliott P. Doane, Jim Yuen-Fong Low, Larry G. Sherman, William A. Yuill
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Patent number: 5510561Abstract: A discrete catalyst and processes for the alkylation of isoalkanes with alkenes under homogenous fluid conditions. The catalyst is formed by contacting, under fluid conditions, a homogenous fluid containing a paraffin hydrocarbon having from 4 to 12 carbon atoms with a Lewis acid/protic Bronsted acid pair to produce a discrete catalytic complex that is soluble in the fluid. The discrete catalyst is the reaction product of the acid pair and alkanes and includes hydrocarbon ligands of limited chain length rendering it soluble in the fluid. The catalyst is active for the alkylation of isoalkanes, under homogenous fluid conditions.Type: GrantFiled: March 6, 1995Date of Patent: April 23, 1996Assignee: Kerr-McGee Chemical CorporationInventors: Larry G. Sherman, William A. Yuill
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Patent number: 4579589Abstract: A process for separating precious metals from a roaster calcine leach residue from a process wherein copper or zinc sulfides are roasted to produce a copper or zinc calcine; the calcine is leached with an aqueous sulfuric acid leaching solution to produce a copper or zinc-containing leaching solution and a roaster calcine leach residue and the copper or zinc-containing leaching solution is separated from the roaster calcine leach residue wherein the process comprises:(a) intimately contacting the roaster calcine leach residue with an aqueous sulfuric acid leach solution containing from about 5 to about 200 grams per liter of sulfuric acid to produce a slurry of leach solution and roaster calcine leach residue and to dissolve precious metal from roaster calcine leach residue;(b) adding copper or zinc sulfide solids to the mixture of leach solution and said roaster calcine each residue;(c) agitating the copper or zinc sulfide solids in intimate contact with the mixture of leach solution and roaster calcine leacType: GrantFiled: November 29, 1984Date of Patent: April 1, 1986Assignee: Atlantic Richfield CompanyInventors: William A. Yuill, Barbara A. Krebs, Gretchen L. Graef
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Patent number: 4551312Abstract: A process for converting molybdenite to molybdenum oxide by a flash roasting process wherein the molybdenum calcine produced in the flash roasting process is subsequently treated with a free chlorine-containing aqueous solution.Type: GrantFiled: November 13, 1984Date of Patent: November 5, 1985Assignee: Atlantic Richfield CompanyInventor: William A. Yuill
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Patent number: 4549959Abstract: A process for selectively separating molybdenum from a molybdenite-containing copper sulfide concentrate by a flotation process wherein the molybdenite is selectively floated by the use of a sulfite or bisulfite compound as a copper sulfide depressant.Type: GrantFiled: October 1, 1984Date of Patent: October 29, 1985Assignee: Atlantic Richfield CompanyInventors: Raynor O. Armstrong, Daniel A. Norrgran, William A. Yuill
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Patent number: RE39068Abstract: A process for reacting titanium tetrachloride vapors with oxygen to produce titanium dioxide wherein the oxygen is introduced into the reactor in at least two points. The process has the ability to control properties, such as particle size, of the raw pigment produced. The temperature of the oxygen introduced to the reactor at the further inlet point is above, below, or at the same temperature of the oxygen introduced at the first inlet point. The further inlet point can be located before or after the all the titanium tetrachloride has been introduced into the reactor. The titanium tetrachloride is introduced at a relatively low temperature, below about 427° C., and the reaction temperature in the reactor is at least about 700° C. The process includes the use of an auxiliary fuel such as carbon monoxide, methane, propane, butane, pentane, hexane, benzene, xylene, toluene, or combinations thereof for increasing the temperature in the reactor.Type: GrantFiled: March 14, 2003Date of Patent: April 18, 2006Inventors: John C. Magyar, Alan J. Morris, Glenn D. Wootten, William A. Yuill