Patents Examined by Mark L. Bell
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Patent number: 6903047Abstract: The present invention concerns a method for enhancing the activity of vanadium phosphorus oxide (VPO) catalysts. Promoter reagents are grafted onto or reacted with the catalyst surface. An optional calcination and activation heating cycle transforms the catalyst precursor into a final active phase. A preferred VPO catalyst produced has a ratio of molybdenum to vanadium on the surface of the catalyst to molybdenum to vanadium in the overall bulk of the catalyst represented by the equation (Mo/V) Surface?1.10 (Mo/V) overall bulk.Type: GrantFiled: January 16, 2001Date of Patent: June 7, 2005Assignee: E.I. du Pont de Nemours and CompanyInventors: Kostantinos Kourtakis, Pratibha Laxman Gai
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Patent number: 6903229Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula: wherein R3 are identical or different and are each a halogen atom, a C1-C10 alkyl group which may be halogenated, a C6-C10 aryl group which may be halogenated, a C2-C10 alkenyl group, a C7-C40-arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a —NR?2, —SR?, —OR?, —OSiR?3 or —PR?2 radical, wherein R? is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group, and R9 and R11 are identical or different and are a Group 14 radical having from 1 to 20 carbon atoms or are each primary, secondary or tertiary butyl groups, aryl groups, isopropyl groups, fluoroalkyl groups, trialkyl silyl groups, or other groups of similar size.Type: GrantFiled: January 31, 2002Date of Patent: June 7, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Terry J. Burkhardt, Udo M. Stehling, James R. Hart, William T. Haygood, Jr., Robert T. Li, James C. Vizzini, Matthew C. Kuchta
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Patent number: 6903045Abstract: A carbonylation catalyst useful for producing esters and carboxylic acids in a vapor phase carbonylation process, wherein the catalyst includes a solid component having a catalytically effective amount of platinum and tin associated with a solid catalyst support material and a vaporous halide promoter component.Type: GrantFiled: June 19, 2001Date of Patent: June 7, 2005Assignee: Eastman Chemical CompanyInventors: Joseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver
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Patent number: 6903042Abstract: A catalytic composition for oligomerizing ethylene, in particular to 1-hexene, is obtained by mixing at least one chromium carboxylate characterized in that it also contains a free carboxylic acid in a set proportion, with at least one aryloxy compound of an element M selected from the group formed by magnesium, calcium, strontium and barium, with general formula M(RO)2-nXn in which RO is an aryloxy radical containing 6 to 80 carbon atoms, X is a halogen atom or a hydrocarbyl radical containing 1 to 30 carbon atoms and n is a whole number that can take the values 0 or 1, and with at least one hydrocarbylaluminum compound selected from the group formed by tris(hydrocarbyl)-aluminum compounds, chlorinated or brominated hydrocarbylaluminum compounds and aluminoxanes.Type: GrantFiled: December 4, 2002Date of Patent: June 7, 2005Assignee: Institut Francais du PetroleInventors: Sébastien Drochon, Séverine Guibert, Lucien Saussine
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Patent number: 6899756Abstract: A drier for oxidative polymerization-drying printing ink is provided, which does not contain cobalt capable of exerting an adverse influence on the environment and health and which is environmentally friendly. A printing ink containing the drier is also provided. The drier for oxidative polymerization-drying printing ink contains a cerium salt of a fatty acid and a manganese salt of a fatty acid.Type: GrantFiled: March 11, 2003Date of Patent: May 31, 2005Assignee: Dainippon Ink and Chemicals, Inc.Inventors: Makoto Nomura, Kosaku Nishiyama, Masanori Kasai, Hideo Ishii
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Patent number: 6899751Abstract: An ink for ink jet recording which is used for an ink jet printer in which at least a portion of a member being in contact with the ink is formed by any one of a borosilicate glass, a soda lime glass, a photosensitive glass, single crystal silicon, polysilicon, a silicon oxide film, a titanium nitride film, a zirconium film, a titanium oxide film, and a silicon nitride film, wherein a corrosion inhibitor is contained, and a phosphonium ion represented by the general formula (Formula 1) described below is contained: (wherein in Formula 1, Ra, Rb, Rc and Rd represent a linear, branched, or cyclic alkyl group having 1 to 4 carbon atoms, a hydroxyalkyl group, a halogenated alkyl group and a substituted or non substituted phenyl group, and X? represents a counter ion) is provided.Type: GrantFiled: October 1, 2001Date of Patent: May 31, 2005Assignee: Ricoh Company, Ltd.Inventors: Hitoshi Arita, Nobutaka Osada, Kiyofumi Nagai, Kakuji Murakami, Akihiko Gotoh
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Patent number: 6899754Abstract: This invention pertains to aqueous inkjet inks containing self-dispersing pigments and effective amounts of one or more multivalent cations, said inks having increased optical density when printed.Type: GrantFiled: May 29, 2003Date of Patent: May 31, 2005Assignee: E. I. du Pont de Nemours and CompanyInventors: An-Gong Yeh, Jose E. Valentini
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Patent number: 6897175Abstract: A metal oxide catalyst precursor composition comprises a pore former and a catalyst reagent.Type: GrantFiled: September 19, 2002Date of Patent: May 24, 2005Assignee: General ElectricInventors: David Parrillo, Pramod Kumbhar, Ashok Menon, Mukund Parthasarathy, Geuch Zijlma, Sunil Ashtekar
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Patent number: 6897177Abstract: A process for preparing a cobalt based catalyst precursor includes, in a support impregnation stage, impregnating a coated catalyst support comprising porous catalyst support particles coated with carbon, with a cobalt salt, and partially drying the impregnated support. Thereafter, in a calcination stage, the partially dried impregnated support is calcined, to obtain the cobalt based catalyst precursor. The cobalt based catalyst precursor can then, in a reduction stage, be reduced to obtain a cobalt based Fischer-Tropsch catalyst.Type: GrantFiled: November 26, 2002Date of Patent: May 24, 2005Assignee: Sasol Technology (Proprietary) LimitedInventors: Peter Jacobus Van Berge, Jan Van De Loosdrecht, Jacobus Lucas Visagie
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Patent number: 6893996Abstract: A process for preparing a hydrocyanation catalyst comprising contacting a bidentate phosphorous-containing ligand with a molar excess of nickel chloride in the presence of a nitrile solvent and a reducing metal which is more electropositive than nickel. Preferably, the nickel chloride is dried before use.Type: GrantFiled: November 26, 2001Date of Patent: May 17, 2005Assignee: Invista North America S.A.R.L.Inventors: Luis A. Chu, Lucy M. Clarkson, Norman Herron, Ronald J. McKinney, Kenneth G. Moloy, Zeru Tekie
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Patent number: 6894179Abstract: This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization.Type: GrantFiled: January 31, 2002Date of Patent: May 17, 2005Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Matthew C. Kuchta, Udo M. Stehling, Robert T. Li, William T. Haygood, Jr., Terry J. Burkhardt
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Patent number: 6893995Abstract: Disclosed are methods of producing a supported organic catalyst system comprising the steps of: (a) providing an organic catalyst solution comprising an organic catalyst dissolved in a supercritical-like solvent; (b) contacting a support material with the organic catalyst solution; and (c) removing substantially all of the supercritical-like solvent from the organic catalyst and the support material.Type: GrantFiled: November 28, 2001Date of Patent: May 17, 2005Assignee: Honeywell International Inc.Inventors: Raymond Hilton Percival Thomas, Roy Phillip Robinson, David Nalewajek, Kane David Cook
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Patent number: 6894180Abstract: A catalyst system having the following formula is described herein. wherein M is a metal; each X is an atom or group banded to M and may be the same or different; R1 and R2 may be the same or each may be different and are substituted or unsubstituted cyclopentadienyl or aromatic groups; RB is a structural bridge between R1 and R2 imparting stereorigidity thereto and including at least one heteroatom bonded to M, with each of R1 and R2 bonded to the same or different heteroatom of RB which heteroatom is also bonded to M; Z is the coordination number of M and is greater than or equal to 4 and m is the number of bonds between M and heteroatoms of RB.Type: GrantFiled: October 23, 2003Date of Patent: May 17, 2005Assignee: Fina Technology, Inc.Inventors: Abbas Razavi, Margarito Lopez, Didier Baekelmans, Vladimir Marin
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Patent number: 6894128Abstract: Catalyst compositions and methods useful in polymerization processes utilizing at least two metal compounds are disclosed. At least one of the metal compounds is a Group 15 containing metal compound and the other metal compound is preferably a bulky ligand metallocene-type catalyst. The invention also discloses a new polyolefin, generally polyethylene, particularly a multimodal polymer and more specifically, a bimodal polymer, and its use in various end-use applications such as film, molding and pipe. The Group 15 containing metal compound is represented in one embodiment by the formulae: wherein M is a Group 4, 5, or 6 metal; each X is independently a leaving group; y is 0 or 1; n is the oxidation state of M; m is the formal change of the ligand comprising the YZL or YZL? groups; L is a Group 15 or 16 element; L? is a Group 15 or 16 element or Group 14 containing group; Y is a Group 15 element; Z is a Group 15 element; and the other groups are as defined herein.Type: GrantFiled: August 5, 2003Date of Patent: May 17, 2005Assignee: Univation Technologies, LLCInventors: Donald R. Loveday, David H. McConville, John F. Szul, Kersten Anne Erickson, Simon Mawson, Tae Hoon Kwack, Frederick J. Karol, David James Schreck
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Patent number: 6890873Abstract: Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D50 value) D50?150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) ??100 m·Pas 3. Thixotropy of Ti (?(5 rpm))/(?(50 rpm))?2 4. BET surface area 30-60 m2/g 5. Compacted bulk=100-160 g/L 6. Original pH?4.5 that can be used for the preparation of dispersions and glass bodies.Type: GrantFiled: December 8, 2003Date of Patent: May 10, 2005Assignee: Degussa AGInventors: Monika Oswald, Gerrit Schneider, Klaus Deller
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Patent number: 6890378Abstract: For the purpose of providing an ink for inkjet recording that allows substantially bleed-free printing to be performed on plain paper, and particularly recycled paper, and providing an inkjet ink capable of ensuring high print quality and maintaining high ejection stability on plain paper, recycled paper, and coated paper, the present invention provides an inkjet ink comprising, together with a coloring material and water, a nonionic substance that has acetylene bonds in the molecules thereof and that also has hydroxyl groups and/or alkylene oxide repeating structures (preferably a substance whose structure is shown by formula (IA) according to claim 2, a substance whose structure is shown by formula (I) according to claim 20, or the like), and a nonionic substance that has lipophilic units comprising alkyl groups or cycloalkyl groups and that also has alkylene oxide repeating structures (preferably a substance whose structure is shown by formula (IIA) according to claim 2, a substance whose structure is showType: GrantFiled: January 17, 2003Date of Patent: May 10, 2005Assignee: Seiko Epson CorporationInventors: Masahiro Yatake, Masayuki Momose
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Patent number: 6890878Abstract: Provided is a catalyst formulation which exhibits extended catalyst life. The formulation comprises a mixture of a ceramic foam material uniformly interspersed between the solid catalyst particles, with the volume percent of ceramic material in the mixture preferably ranging from 20 to 60 volume %. The catalyst formulation is particularly applicable to solid catalyst particles comprised of a phosphoric acid impregnated substrate, and is particularly useful for processes such as catalytic hydrocarbon condensation processes.Type: GrantFiled: December 28, 2001Date of Patent: May 10, 2005Assignee: United Refining CompanyInventor: John H. Moore
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Patent number: 6888017Abstract: This invention relates to bridged indenyl metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The bridge may be represented by the formula: wherein: R17 to R24 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C10 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, or a halogen atom, or together are a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or hydrocarbyl, tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings; and M2 is carbon, silicon, germanium or tin.Type: GrantFiled: January 31, 2002Date of Patent: May 3, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Matthew C. Kuchta, Udo M. Stehling, Robert T. Li, William T. Haygood, Jr., Terry J. Burkhardt
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Patent number: 6887821Abstract: A robust, high temperature mixed metal oxide catalyst for propellant composition, including high concentration hydrogen peroxide, and catalytic combustion, including methane air mixtures. The uses include target, space, and on-orbit propulsion systems and low-emission terrestrial power and gas generation. The catalyst system requires no special preheat apparatus or special sequencing to meet start-up requirements, enabling a fast overall response time. Start-up transients of less than 1 second have been demonstrated with catalyst bed and propellant temperatures as low as 50 degrees Fahrenheit. The catalyst system has consistently demonstrated high decomposition effeciency, extremely low decomposition roughness, and long operating life on multiple test particles.Type: GrantFiled: April 1, 2003Date of Patent: May 3, 2005Assignee: The Boeing CompanyInventors: Jeffrey A. Mays, Kevin A. Lohner, Kathleen M. Sevener, Jeff J. Jensen
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Patent number: 6884748Abstract: The present invention relates to a process of producing a fluorided catalyst compound, catalyst compositions, and polymerization methods including such. At least one specific embodiment of the invention includes contacting a chlorinated metallocene catalyst component with a fluorinated inorganic salt, for a time sufficient to form a fluorinated metallocene catalyst component such as described in the following example: wherein R are substituent groups selected from the group consisting of C1 to C10 alkyls in a particular embodiment, and p is 0 or an integer from 1 to 5. The fluorinated inorganic salt is characterized in a particular embodiment as a compound that provides at least one fluoride ion when contacted with a diluent comprising at least 50 wt % water.Type: GrantFiled: February 18, 2003Date of Patent: April 26, 2005Assignee: Univation Technologies, LLCInventor: Laughlin G. McCullough