Patents by Inventor Guido Petrini
Guido Petrini 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: 8574450Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: GrantFiled: May 24, 2011Date of Patent: November 5, 2013Assignee: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20110251054Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: ApplicationFiled: May 24, 2011Publication date: October 13, 2011Applicant: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Patent number: 7939463Abstract: A process for producing a high surface area iron material, comprising predominantly low crystalline iron oxides, starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about 200 m2/g, and is prepared via a method which comprises reacting a low surface area iron metal with oxygen and an organic acid. The high surface area iron material formed via this method is essentially free of contaminants.Type: GrantFiled: January 29, 2007Date of Patent: May 10, 2011Assignee: Sud-Chemie Inc.Inventors: Robert J. O'Brien, Samantha E. Sargent, Guido Petrini, Esterino Conca
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Publication number: 20090324487Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: ApplicationFiled: July 11, 2008Publication date: December 31, 2009Applicant: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Patent number: 7566680Abstract: A method for producing a high surface area iron material starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about 200 m2/g, and is prepared via a method which comprises reacting a low surface area iron metal with oxygen and an organic acid. The high surface area iron material formed via this method is essentially free of contaminants.Type: GrantFiled: October 20, 2005Date of Patent: July 28, 2009Assignee: Sud-Chemie Inc.Inventors: Guido Petrini, Esterino Conca, Robert J. O'Brien, X.D. Hu, Samantha Sargent
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Patent number: 7442362Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350 ° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: GrantFiled: April 30, 2004Date of Patent: October 28, 2008Assignee: Sud Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Patent number: 7199077Abstract: A Fischer-Tropsch catalyst comprising iron and at least one promoter is prepared via a method which comprises the preparation of a high purity iron precursor and which uses a nominal amount of water in the catalyst production. The catalyst particles prepared with the high purity iron precursor have an essentially spherical particle shape, a relatively narrow particle size distribution range, and a high surface area.Type: GrantFiled: May 15, 2002Date of Patent: April 3, 2007Assignee: Sud-Chemie Inc.Inventors: X. D Hu, Robert J. O'Brien, Richard Tuell, Esternio Conca, Carlo Rubini, Guido Petrini
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Patent number: 7074383Abstract: A process is described for the preparation of zeolitic catalysts in the form of microspheres, comprising zeolite and oligomeric silica, characterized by a high mechanical resistance. The process consists in subjecting to rapid drying the suspension, to which tetra-alkylorthosilicate is optionally added, resulting from the synthesis of zeolite by hydrothermal treatment at autogenous pressure of the reagent mixture containing tetra-alkylammoniumhydroxide as templating agent, and subjecting the product resulting from the drying to calcination.Type: GrantFiled: April 18, 2005Date of Patent: July 11, 2006Assignee: Enichem S.p.A.Inventors: Angela Carati, Giuseppe Bellussi, Maria Angela Mantegazza, Guido Petrini
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Publication number: 20060135371Abstract: Method for removing nitrogen oxides NOx from gas mixtures that contain them, comprising contacting of the gas mixtures with an absorbent material comprising compounds having formula CaCuO2 and/or Ca0.83CuO2 providing X-ray diffraction powder spectra that correspond, for the CaCuO2 compound, to JCPDS card 48-197 and, for the Ca0.83 CuO2, to JCPDS card 48-212, or mixtures of said compounds or compositions containing them.Type: ApplicationFiled: December 16, 2005Publication date: June 22, 2006Applicant: SUD-CHEMIE CATALYSTS ITALIA, S.R.L.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20060101944Abstract: A method for producing a high surface area iron material starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about 200 m2/g, and is prepared via a method which comprises reacting a low surface area iron metal with oxygen and an organic acid. The high surface area iron material formed via this method is essentially free of contaminants.Type: ApplicationFiled: October 20, 2005Publication date: May 18, 2006Inventors: Guido Petrini, Esterino Conca, Robert O'Brien, X.D. Hu, Samantha Sargent
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Publication number: 20040202606Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: ApplicationFiled: April 30, 2004Publication date: October 14, 2004Applicant: SUD Chemie MT S.r.l.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Patent number: 6790274Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: GrantFiled: March 12, 2003Date of Patent: September 14, 2004Assignee: SUD Ehemie MT S.r.L.Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20040009871Abstract: A Fischer-Tropsch catalyst comprising iron and at least one promoter is prepared via a method which comprises the preparation of a high purity iron precursor and which uses a nominal amount of water in the catalyst production. The catalyst particles prepared with the high purity iron precursor have an essentially spherical particle shape, a relatively narrow particle size distribution range, and a high surface area.Type: ApplicationFiled: May 29, 2003Publication date: January 15, 2004Inventors: X.D. Hu, Robert J. O'Brien, Richard Tuell, Esternio Conca, Carlo Rubini, Guido Petrini
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Publication number: 20030175204Abstract: Highly pure iron oxides are prepared by reaction of metallic iron, in the form of microspheroidal particles or of scraps or cuttings, with an agitated aqueous solution of a mono- or polycarboxylic acid with a pKa of 0.5 to 6 relative to the first carboxyl and capable of decomposing, by heating in air at 200 to 350° C., to carbon dioxide and water, using 0.03 to 1.5 moles of acid per g-atoms of iron, a water/iron weight ration of 1 to 20, and by oxidation of the ferrous carboxilate to ferric salt, with an agent selected from oxygen, mixtures containing oxygen, hydrogen peroxide, organic peroxides and hydroperoxides.Type: ApplicationFiled: March 12, 2003Publication date: September 18, 2003Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
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Publication number: 20010008868Abstract: A process is described for the preparation of zeolitic catalysts in the form of microspheres, comprising zeolite and oligomeric silica, characterized by a high mechanical resistance. The process consists in subjecting to rapid drying the suspension, to which tetra-alkylorthosilicate is optionally added, resulting from the synthesis of zeolite by hydrothermal treatment at autogenous pressure of the reagent mixture containing tetra-alkylammoniumhydroxide as templating agent, and subjecting the product resulting from the drying to calcination.Type: ApplicationFiled: September 24, 1998Publication date: July 19, 2001Inventors: ANGELA CARATI, GIUSEPPE BELLUSSI, MARIA ANGELA MANTEGAZZA, GUIDO PETRINI
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Patent number: 5498793Abstract: Process for the production of oximes which comprises ammoximation of a carbonylic compound selected from acetophenone and cyclododecanone with H.sub.2 O.sub.2 and NH.sub.3 in the presence of a catalyst based on silicon, titanium and oxygen and a cocatalyst consisting of amorphous silica.Type: GrantFiled: June 5, 1995Date of Patent: March 12, 1996Assignee: Enichem S.p.A.Inventors: Maria A. Mantegazza, Guido Petrini
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Patent number: 5320819Abstract: Direct catalytic process for the production of hydroxylamine by means of the oxidation of ammonia with H.sub.2 O.sub.2, wherein the catalyst is composed of silicon, titanium and oxygen and has a crystalline (as in the case of titanium-silicalites, for example) or amorphous structure.Type: GrantFiled: July 2, 1992Date of Patent: June 14, 1994Assignee: Enichem Anic S.r.l.Inventors: Maria A. Mantegazza, Mario Padovan, Guido Petrini, Paolo Roffia
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Patent number: 5312987Abstract: Two-step process in the liquid phase for producing oximes at 60.degree.-100.degree. C. and 1.5-5 bars, which comprises:(a) in a primary step, ammoximating a carbonylic compound with H.sub.2 O.sub.2 and NH.sub.3 in the presence of a silicon, titanium and oxygen based catalyst;(b) oximating the residual carbonylic compound with a solution of hydroxylamine, obtained in its turn by oxidizing ammonia with H.sub.2 O.sub.2, having a concentration comprised within the range of from 0.01 to 3%, preferably of from 0.5 to 2% by weight, in such a way as to have a molar ratio of hydroxylamine to the carbonylic compound comprised within the range of from 0.9 to 3, preferably of from 1 to 2.Type: GrantFiled: March 30, 1993Date of Patent: May 17, 1994Assignee: Enichem Anic S.r.l.Inventors: Maria A. Mantegazza, Guido Petrini, Alberto Cesana
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Patent number: 4968842Abstract: The invention concerns a catalytic process for the manufacture of oximes by ammoximation of the corresponding carbonyl compounds, characterized in that the catalyst is a solid composition consisting of silicon, titanium and oxygen, chemically combined with each other, and in that the titanium amount, expressed as TiO.sub.2, ranges from 1 to 95% by weight, the XR diffractogam of said composition being a smooth-trend line (halo), typical of the amorphous solids.Type: GrantFiled: September 15, 1989Date of Patent: November 6, 1990Assignee: Montedipe, S.p.A.Inventors: Mario Padovan, Fausto Genoni, Giuseppe Leofanti, Guido Petrini, Paolo Roffia, Alberto Cesana
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Patent number: 4885409Abstract: Process for the hydrogenation of bis-phenols by reacting bis-phenols with hydrogen in the presence of a catalytic system consisting of palladium supported on activated carbon.Type: GrantFiled: May 4, 1988Date of Patent: December 5, 1989Assignee: Montedison S.p.A.Inventors: Andrea Gardano, Francesco Casagrande, Marco Foa, Guido Petrini, Riccardo Barisone, Lawrence Chapoy