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).

  • Patent number: 8574450
    Abstract: 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: Grant
    Filed: May 24, 2011
    Date of Patent: November 5, 2013
    Assignee: SUD Chemie MT S.r.l.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Publication number: 20110251054
    Abstract: 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: Application
    Filed: May 24, 2011
    Publication date: October 13, 2011
    Applicant: SUD Chemie MT S.r.l.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Patent number: 7939463
    Abstract: 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: Grant
    Filed: January 29, 2007
    Date of Patent: May 10, 2011
    Assignee: Sud-Chemie Inc.
    Inventors: Robert J. O'Brien, Samantha E. Sargent, Guido Petrini, Esterino Conca
  • Publication number: 20090324487
    Abstract: 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: Application
    Filed: July 11, 2008
    Publication date: December 31, 2009
    Applicant: SUD Chemie MT S.r.l.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Patent number: 7566680
    Abstract: 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: Grant
    Filed: October 20, 2005
    Date of Patent: July 28, 2009
    Assignee: Sud-Chemie Inc.
    Inventors: Guido Petrini, Esterino Conca, Robert J. O'Brien, X.D. Hu, Samantha Sargent
  • Patent number: 7442362
    Abstract: 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: Grant
    Filed: April 30, 2004
    Date of Patent: October 28, 2008
    Assignee: Sud Chemie MT S.r.l.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Patent number: 7199077
    Abstract: 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: Grant
    Filed: May 15, 2002
    Date of Patent: April 3, 2007
    Assignee: Sud-Chemie Inc.
    Inventors: X. D Hu, Robert J. O'Brien, Richard Tuell, Esternio Conca, Carlo Rubini, Guido Petrini
  • Patent number: 7074383
    Abstract: 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: Grant
    Filed: April 18, 2005
    Date of Patent: July 11, 2006
    Assignee: Enichem S.p.A.
    Inventors: Angela Carati, Giuseppe Bellussi, Maria Angela Mantegazza, Guido Petrini
  • Publication number: 20060135371
    Abstract: 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: Application
    Filed: December 16, 2005
    Publication date: June 22, 2006
    Applicant: SUD-CHEMIE CATALYSTS ITALIA, S.R.L.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Publication number: 20060101944
    Abstract: 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: Application
    Filed: October 20, 2005
    Publication date: May 18, 2006
    Inventors: Guido Petrini, Esterino Conca, Robert O'Brien, X.D. Hu, Samantha Sargent
  • Publication number: 20040202606
    Abstract: 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: Application
    Filed: April 30, 2004
    Publication date: October 14, 2004
    Applicant: SUD Chemie MT S.r.l.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Patent number: 6790274
    Abstract: 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: Grant
    Filed: March 12, 2003
    Date of Patent: September 14, 2004
    Assignee: SUD Ehemie MT S.r.L.
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Publication number: 20040009871
    Abstract: 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: Application
    Filed: May 29, 2003
    Publication date: January 15, 2004
    Inventors: X.D. Hu, Robert J. O'Brien, Richard Tuell, Esternio Conca, Carlo Rubini, Guido Petrini
  • Publication number: 20030175204
    Abstract: 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: Application
    Filed: March 12, 2003
    Publication date: September 18, 2003
    Inventors: Esterino Conca, Carlo Rubini, Guido Petrini
  • Publication number: 20010008868
    Abstract: 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: Application
    Filed: September 24, 1998
    Publication date: July 19, 2001
    Inventors: ANGELA CARATI, GIUSEPPE BELLUSSI, MARIA ANGELA MANTEGAZZA, GUIDO PETRINI
  • Patent number: 5498793
    Abstract: 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: Grant
    Filed: June 5, 1995
    Date of Patent: March 12, 1996
    Assignee: Enichem S.p.A.
    Inventors: Maria A. Mantegazza, Guido Petrini
  • Patent number: 5320819
    Abstract: 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: Grant
    Filed: July 2, 1992
    Date of Patent: June 14, 1994
    Assignee: Enichem Anic S.r.l.
    Inventors: Maria A. Mantegazza, Mario Padovan, Guido Petrini, Paolo Roffia
  • Patent number: 5312987
    Abstract: 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: Grant
    Filed: March 30, 1993
    Date of Patent: May 17, 1994
    Assignee: Enichem Anic S.r.l.
    Inventors: Maria A. Mantegazza, Guido Petrini, Alberto Cesana
  • Patent number: 4968842
    Abstract: 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: Grant
    Filed: September 15, 1989
    Date of Patent: November 6, 1990
    Assignee: Montedipe, S.p.A.
    Inventors: Mario Padovan, Fausto Genoni, Giuseppe Leofanti, Guido Petrini, Paolo Roffia, Alberto Cesana
  • Patent number: 4885409
    Abstract: 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: Grant
    Filed: May 4, 1988
    Date of Patent: December 5, 1989
    Assignee: Montedison S.p.A.
    Inventors: Andrea Gardano, Francesco Casagrande, Marco Foa, Guido Petrini, Riccardo Barisone, Lawrence Chapoy