Patents by Inventor Carlo Venturello
Carlo Venturello 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: 5688434Abstract: A process of bleaching using at least one imide-aromatic (poly)peroxyacid, having a formula: ##STR1## wherein A represents the residue of a benzene or napthalene ring optionally substituted by a COOH or COOOH group, the symbol or symbols R, which may be the same or different from each other, represent a hydrogen atom, a C.sub.1 -C.sub.5 alkyl group, an OH group, a COOH group, a COOOH group, a COOR' group, wherein R' represents a C.sub.1 -C.sub.5 alkyl group, or a substituted C.sub.1 -C.sub.5 alkyl group wherein the substituent is nitro, an OH group or a C.sub.1 -C.sub.5 alkoxy group, and n is an integer from 1 to 5.Type: GrantFiled: January 29, 1996Date of Patent: November 18, 1997Assignee: Ausimont S.p.A.Inventors: Carlo Venturello, Claudio Cavallotti, Fulvio Burzio
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Patent number: 5575947Abstract: Imide-aromatic (poly)peroxyacids are herein disclosed, which have the formula (I): ##STR1## wherein A represents a residue of a substituted or unsubstituted benzene or naphthalene ring; R is a hydrogen atom, a lower alkyl group, a COOH group or a COOOH group; and n is an integer from 1 to 5.Type: GrantFiled: January 19, 1989Date of Patent: November 19, 1996Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavalotti
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Patent number: 5536434Abstract: This invention relates to imido-derivative peroxycarboxylic acids having the formula I: ##STR1## wherein R and R.sub.1, which may be the same or different, represent hydrogen atoms, alkyl groups, or, taken together with the carbon atoms to which they are linked, give rise to a cyclic aliphatic ring, all of them being optionally substituted; the . . . symbol indicates a simple or an olefinic bond; R.sub.2 represents a hydrogen atom, an alkyl group, or an OH group, and n is an integer different from 0; the process for their preparation and their use as bleaching agents.Type: GrantFiled: October 20, 1989Date of Patent: July 16, 1996Assignee: Ausimont S.p.A.Inventors: Carlo Venturello, Claudio Cavallotti, Elena Bencini, Maria A. Sasso
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Patent number: 5520844Abstract: Bleaching agents constituted by at least one imidearomatic (poly)peroxyacid, having the formula (I): ##STR1## wherein A represents a residue of a substituted or unsubstituted benzene or naphthalene ring, R is a hydrogen atom, a lower alkyl group, an OH group, a COOH group, a COOOH group or a COOR' group wherein R' represents a C.sub.1 -C.sub.5 alkyl group, and n is an integer from 1 to 5.Type: GrantFiled: January 4, 1991Date of Patent: May 28, 1996Assignee: Ausimont S.p.A.Inventors: Carlo Venturello, Claudio Cavallotti, Fulvio Burzio
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Patent number: 5423998Abstract: Amino-derivative (poly)peroxycarboxylic acids which have the formula: ##STR1## wherein the symbols have the following meanings: R, R.sub.1, and R.sub.2, which may be equal to or different from one another, represent hydrogen atoms, alkyl groups or groups selected from R, R.sub.1 and R.sub.2, which taken together with the nitrogen atom to which they are linked, give rise to an aliphatic heterocyclic group, all of them being optionally substituted;A represents a (cyclo)alkylene group, an arylene group which may also be condensed with cycloaliphatic groups, a cycloalkylene-alkylene or an alkylene-cycloalkylene group, an arylene-alkylene or an alkylene-arylene group, which may be condensed with cyclo-aliphatic groups, wherein said alkylene group may also be interrupted by --CONR.sub.3 groups, wherein R.sub.3 represents a hydrogen atom or an alkyl or aryl group;X.sup.- represents HSO.sub.4.sup.- or CH.sub.3 SO.sub.3.sup.- ; a process for their preparation; and their use as bleaching agents.Type: GrantFiled: April 13, 1993Date of Patent: June 13, 1995Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5324849Abstract: Disclosed is a class of compounds based on tungsten and diphosphonic acids, which contain active oxygen atoms and cationic groups deriving from onium salts.Also disclosed is the method for preparing and using said class of compounds for olefin oxidation and diol and acid oxidation reactions.Type: GrantFiled: December 22, 1992Date of Patent: June 28, 1994Assignee: Enichem S.P.A.Inventors: Stefanio Bonsignore, Rino D'Aloisio, Paolo Soncini, Carlo Venturello
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Patent number: 5294362Abstract: Amino-derivative (poly)peroxycarboxylic acids which have the formula: ##STR1## wherein the symbols have the following meanings: R, R.sub.1, and R.sub.2, which may be equal to or different from one another, represent hydrogen atoms, alkyl groups or groups selected from R, R.sub.1 and R.sub.2, which taken together with the nitrogen atom to which they are linked, give rise to an aliphatic heterocyclic group, all of them being optionally substituted;A represents a (cyclo) alkylene group, an arylene group which may also be condensed with cycloaliphatic groups, a cycloalkylene-alkylene or an alkylene-cycloalkylene group, an arylene-alkylene or an alkylene-arylene group, which may be condensed with cyclo-aliphatic groups, wherein said alkylene group may also be interrupted by --CONR.sub.3 groups, wherein R.sub.3 represents a hydrogen atom or an alkyl or aryl group;X- represents HSO.sub.4.sup.- or CH.sub.3 SO.sub.3.sup.- ;a process for their preparation; and their use as bleaching agents.Type: GrantFiled: April 13, 1993Date of Patent: March 15, 1994Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5292447Abstract: Heterocyclic (poly)peroxycarboxylic acids having a N-amidic heteroatom, which have the formula:R--(CH.sub.2).sub.m --R' (I)wherein:R and R', alike or different from each other, represent hydrogen atoms or a group: ##STR1## with the proviso that at least one of R and R' shall be different from H, and wherein the other symbols have the following meaning:R" represents a hydrogen atom or any other substituent non-reactive in the presence of the active oxygen of the peroxycarboxylic group and/or under the preparation conditions;m represents a number between 1 to 12;n represents a number selected from 0, 1 and 2;p represents a number between 1 and 3; their process of preparation and their use as bleaching agents.Type: GrantFiled: September 18, 1992Date of Patent: March 8, 1994Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5274140Abstract: There is disclosed a new process for the epoxidization of olefins by reaction with hydrogen peroxide according to the double phase technique with "onium" salts, characterized in that the reaction is conducted in a liquid aqueous-organic biphasic system consisting of:(a) an organic phase substantially containing the olefin, and(b) an aqueous acid phase substantially containing hydrogen peroxide,in the presence of a catalytic system consisting of a first component which is at least one element selected from W. Mo, V or at least one derivative of said elements, and of a second component which is at least one derivative selected from the derivatives of P and As.Type: GrantFiled: September 14, 1990Date of Patent: December 28, 1993Assignee: Instituto Guido Donegani, S.p.A.Inventors: Carlo Venturello, Enzo Alneri, Giulio Lana
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Patent number: 5268472Abstract: Nitrogen-containing heterocyclic (poly) peroxycarboxylic acid monopersulfates which have the formula: ##STR1## wherein the symbols have the following meanings: R represents a hydrogen atom or an alkyl, (hetero)cycloalkyl, (hetero)aryl, alkyl-aryl or arylalkyl group, wherein said groups are optionally substituted, or a carboxylic group or a peroxycarboxylic group, or any other substituents non-reactive in the presence of the peroxycarboxylic group;R.sup.1 represents an alkyl group > C.sub.5 ;n is a number selected from 0,1 and 2;m is a number selected from 1, 2 and 3;and the heterocyclic ring may be in its turn condensed with at least one further (hetero) aromatic or (hetero)cycloalkylic ring. The invention relates to a preparation process for, and to their use, as bleaching agents.Type: GrantFiled: October 5, 1992Date of Patent: December 7, 1993Assignee: Ausimont S.p.A.Inventors: Carlo Venturello, Claudio Cavallotti, Fiorella Achilli
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Patent number: 5248601Abstract: A biotechnological process for preparing L(-)-carnitine chloride, having the formula ##STR1## comprising: (a) reacting a racemic ester of (R,S)-3,4-epoxybutyric acid having the formula ##STR2## wherein R is an alkyl group having from 1 to 10 carbons or a benzyl group, with an enzyme capable of selectively hydrolyzing enantiomer S(-);(b) separating the enantiomer S(-) from non-reacted ester which is present in predominantly the R(+) form;(c) reacting the non-reacted ester obtained in step (b) with an enzyme capable of quantitatively hydrolyzing the R(+) form to obtain thereby a salt of 3,4-epoxybutyric acid in the R(+) form having the formula ##STR3## wherein X is Na, K, or Li; (d) reacting the salt obtained in step (c) with a molar excess of trimethylamine; and(e) treating the reaction product of step (d) with HCl to remove excess trimethylamine and to obtain thereby the L(-)-carnitine chloride of formula (I).Type: GrantFiled: October 9, 1990Date of Patent: September 28, 1993Inventors: Franco Francalanci, Marco Ricci, Pietro Cesti, Carlo Venturello
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Patent number: 5245075Abstract: Amino-derivative (poly)peroxycarboxylic acids which have the formula: ##STR1## wherein the symbols have the following meanings: R, R.sub.1, and R.sub.2, which may be equal to or different from one another, represent hydrogen atoms, alkyl groups or groups selected from R, R.sub.1 and R.sub.2, which taken together with the nitrogen atom to which they are linked, give rise to an aliphatic heterocyclic group, all of them being optionally substituted;A represents a (cyclo) alkylene group, an arylene group which may also be condensed with cycloaliphatic groups, a cycloalkylene-alkylene or an alkylene-cycloalkylene group, an arylene-alkylene or an alkylene-arylene group, which may be condensed with cyclo-aliphatic groups wherein said alkylene group may also be interrupted by --CONR.sub.3 groups, wherein R.sub.3 represents a hydrogen atom or an alkyl or aryl group;X.sup.- represents HSO.sub.4.sup.- or CH.sub.3 SO.sub.3.sup.- ; a process for their preparation; and their use as bleaching agents.Type: GrantFiled: December 9, 1991Date of Patent: September 14, 1993Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5180516Abstract: Heterocyclic (poly)peroxycarboxylic acids having a N-amidic heteroatom, which have the formula:R--(CH.sub.2).sub.m --R' (I)wherein:R and R', alike or different from each other, represent hydrogen atoms or a group: ##STR1## with the proviso that at least one of R and R' shall be different from H, and wherein the other symbols have the following meaning:R" represents a hydrogen atom or any other substituent non-reactive in the presence of the active oxygen of the peroxycarboxylic group and/or under the preparation conditions;m represents a number between 1 to 12;n represents a number selected from 0, 1 and 2;p represents a number between 1 and 3;their process of preparation and their use as bleaching agents.Type: GrantFiled: July 8, 1991Date of Patent: January 19, 1993Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5179205Abstract: Heterocyclic (poly)peroxycarboxylic acids having a N-amidic heteroatom, which have the formula:R--(CH.sub.2) .sub.m --R' (I)wherein: R and R', alike or different from each other, represent hydrogen atoms or a group: ##STR1## with the proviso that at least one of R and R' shall be different from H, and wherein the other symbols have the following meaning:R" represents a hydrogen atom or any other substituent non-reactive in the presence of the active oxygen of the peroxycarboxylic group and/or under the preparation conditions;m represents a number between 1 to 12;n represents a number selected from 0, 1 and 2;p represents a number between 1 and 3;their process of preparation and their use as bleaching agents.Type: GrantFiled: April 18, 1991Date of Patent: January 12, 1993Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavalotti
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Patent number: 5117049Abstract: Amino-derivative (poly)peroxycarboxylic acid monopersulfates having the formula: ##STR1## wherein the symbols have the following meanings: R, R.sub.1 and R.sub.2, which may be alike or different from one another, represent hydrogen atoms, alkyl groups which may be optionally substituted with the proviso that at least one of them is a hydrogen atom;n is an integer different from 0;said --(CH.sub.2).sub.n -- group may be also interrupted by CONR.sub.3 groups;and wherein R.sub.3 represents a hydrogen atom or an alkyl or aryl group. A process for their preparation and their use as bleaching agents are also disclosed.Type: GrantFiled: June 24, 1991Date of Patent: May 26, 1992Assignee: Ausimont S.r.L.Inventors: Carlo Venturello, Claudio Cavallotti, Fiorella Achilli
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Patent number: 5108648Abstract: Pyridine-3-peroxycarboxylic acid monopersulfate is herein disclosed, which has the formula: ##STR1## The process for its preparation and its use as bleaching agent.Type: GrantFiled: October 17, 1990Date of Patent: April 28, 1992Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5071584Abstract: Nitrogen-containing heterocyclic (poly)peroxycarboxylic acids having the formula: ##STR1## wherein: R and R.sub.1 represent, independently of each other, a hydrogen atom or a straight or branched alkyl, (hetero)cycloalkyl, (hetero)aryl, alkylaryl or arylalkyl group,optionally substituted, a carboxylic group, or any other substituent which is non-reactive in the presence of the active oxygen of the peroxycarboxylic group;n is an integer selected from 0, 1 and 2;m is an integer selected from 1, 2 and 3; andX represents an acidic anion selected from HSO.sub.4.sup.- and CH.sub.3 SO.sub.3 --and wherein the heterocyclic ring may be condensed with at least one further (hetero)aromatic or (hetero)cycloalkylic ring.Type: GrantFiled: October 2, 1990Date of Patent: December 10, 1991Assignee: Ausimont S.p.A.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5041546Abstract: Heterocyclic (poly)peroxycarboxylic acids having a N-amidic heteroatom, which have the formula:R--(CH.sub.2).sub.m --R' (I)wherein:R and R', alike or different from each other, represent hydrogen atoms or a group: ##STR1## with the proviso that at least one of R and R' shall be different from H, and wherein the other symbols have the following meaning:R" represents a hydrogen atom or any other substituent non-reactive in the presence of the active oxygen of the peroxycarboxylic group and/or under the preparation conditions;m represents a number between 1 to 12;n represents a number selected from 0, 1 and 2;p represents a number between 1 and 3;their process of preparation and their use as bleaching agents.Type: GrantFiled: June 14, 1989Date of Patent: August 20, 1991Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti
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Patent number: 5026911Abstract: The invention relates to a process for preparing oximes starting from saturated primary (cyclo)aliphatic amines optionally substituted by groups which are inert under the reaction conditions, by reacting the saturated primary amine with oxygen, the reaction being conducted in the liquid phase in the presence of at least a catalyst based on compounds belonging to Group IV B of the Periodic System, thereby obtaining the corresponding aliphatic and cycloaliphatic oximes.Type: GrantFiled: April 25, 1990Date of Patent: June 25, 1991Assignee: Istituto Guido Donegani S.p.A.Inventors: Carlo Venturello, Rino D'Aloisio
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Patent number: 4994573Abstract: Pyridine-3-peroxycarboxylic acid monopersulfate is herein disclosed, which has the formula: ##STR1## The process for its preparation and its use as bleaching agent.Type: GrantFiled: December 12, 1989Date of Patent: February 19, 1991Assignee: Ausimont S.r.l.Inventors: Carlo Venturello, Claudio Cavallotti