Patents by Inventor Giuseppe Cantatore
Giuseppe Cantatore 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: 7435086Abstract: A dental reamer/file is in the form of an elongated shank having a proximal end portion and a distal end and a tapered working portion of determined length extending therebetween, the external surface of the shank working portion having at least two equally spaced apart continuous concave helical flutes and therebetween an equal number of spiraled, spaced apart flanges, each flange having in a plane perpendicular to the length of a longitudinal axis of the shaft an outer end defined by a first and a second surface intersecting at a point of maximum radius from the axis, the first surface being relatively short and the second surface relatively longer, the point of maximum radius providing a spiraled scraping edge.Type: GrantFiled: August 2, 2005Date of Patent: October 14, 2008Inventors: Elio Vincenzo Giovanni Berutti, Arnaldo Castellucci, Giuseppe Cantatore
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Patent number: 7300281Abstract: An endodontic file having an elongated shank with a proximal end portion, a distal end and a tapered working portion extending from the proximal portion to the distal end, the external surface of the shank working portion being defined in part by a plurality of at least two equally spaced apart continuous helical flutes formed into a central core portion of the shank working portion, the flutes having therebetween an equal number of spiraled spaced apart flanges, each flange having a semi-circular surface having a leading edge and a trailing edge, each edge being in or parallel to a plane of the shank longitudinal axis, each leading and trailing edges providing a cutting or scraping edge.Type: GrantFiled: August 2, 2005Date of Patent: November 27, 2007Inventors: Giuseppe Cantatore, Arnaldo Castellucci, Elio Vincenzo Giovanni Berutti
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Publication number: 20070031784Abstract: A dental reamer/file is in the form of an elongated shank having a proximal end portion and a distal end and a tapered working portion of determined length extending therebetween, the external surface of the shank working portion having at least two equally spaced apart continuous concave helical flutes and therebetween an equal number of spiraled, spaced apart flanges, each flange having in a plane perpendicular to the length of a longitudinal axis of the shaft an outer end defined by a first and a second surface intersecting at a point of maximum radius from the axis, the first surface being relatively short and the second surface relatively longer, the point of maximum radius providing a spiraled scraping edge.Type: ApplicationFiled: August 2, 2005Publication date: February 8, 2007Inventors: Elio Berutti, Arnaldo Castellucci, Giuseppe Cantatore
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Publication number: 20070031783Abstract: An endodontic file having an elongated shank with a proximal end portion, a distal end and a tapered working portion extending from the proximal portion to the distal end, the external surface of the shank working portion being defined in part by a plurality of at least two equally spaced apart continuous helical flutes formed into a central core portion of the shank working portion, the flutes having therebetween an equal number of spiraled spaced apart flanges, each flange having a semi-circular surface having a leading edge and a trailing edge, each edge being in or parallel to a plane of the shank longitudinal axis, each leading and trailing edges providing a cutting or scraping edge.Type: ApplicationFiled: August 2, 2005Publication date: February 8, 2007Inventors: Giuseppe Cantatore, Arnaldo Castellucci, Elio Vincenzo Giovanni Berutti
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Publication number: 20060246394Abstract: A dental reamer/file instrument having an elongated shank having a proximal end portion, a distal end and an intermediate tapered working portion, the external surface of the shank working portion having three continuous equally spaced helical flutes forming three spiral flanges, each of which, in a plane perpendicular to the length of the shaft is defined in part by a triangular outer working portion having a base width of “A”, an apex of each triangular outer portion forming a cutting/scraping edge, each triangular outer working portion being integrally connected to the central core portion by a reduced width neck portion of width “B” and wherein “A” is greater than “B”, the triangular outer working portions being rotational flexibility within elastic limits relative to the shaft central core portion.Type: ApplicationFiled: April 27, 2005Publication date: November 2, 2006Inventors: Giuseppe Cantatore, Arnaldo Castellucci, Elio Berutti
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Patent number: 5306495Abstract: Compounds containing substituted piperidine groups, of the general formula (I) ##STR1## in which n is e.g. 1, 2 or 3, R.sub.1 is e.g. hydrogen or methyl, R.sub.2 is e.g. ethylene or trimethylene and if n is 1, A is e.g. hydrogen, --COOC.sub.18 H.sub.37 --n or --COC.sub.11 H.sub.23 --n, if n is 2, A is e.g. ##STR2## and if n is 3, A is e.g. ##STR3## are effective stabilizers for organic materials, especially synthetic polymers, which are subject to the action of light, heat and oxidation.Type: GrantFiled: March 2, 1992Date of Patent: April 26, 1994Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Graziano Vignali
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Patent number: 5198546Abstract: The present invention relates to novel piperidine-triazine compounds of the general formula (I) ##STR1## in which R.sub.1 is e.g. methyl, acetyl or (C.sub.1 -C.sub.2 alkoxy)carbonyl, A is e.g. a group of the formula (IIa), ##STR2## in which R.sub.3 is e.g. hydrogen, methyl, 2,2,6,6-tetramethyl-4-piperidyl, 1,2,2,6,6-pentamethyl-4-piperidyl or 1-acetyl-2,2,6,6-tetramethyl-4-piperidyl, R.sub.4 is e.g. C.sub.3 -C.sub.6 alkylene, R.sub.2 is e.g. a group R.sub.1 -A- and n is e.g. a number from 1 to 5.The said compounds are effective as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.Type: GrantFiled: November 2, 1990Date of Patent: March 30, 1993Assignee: Ciba-Geigy CorporationInventors: Valerio Borzatta, Giuseppe Cantatore
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Patent number: 5134233Abstract: The present invention relates to novel piperidine-triazine compounds containing silane groups of the formula (I) ##STR1## in which R.sub.1 is a group of the formula ##STR2## R.sub.7 is e.g. hydrogen, X is e.g. >N--R.sub.10 with R.sub.10 being C.sub.1 -C.sub.4 alkyl, R.sub.8 is e.g. a group of the formula ##STR3## with R.sub.11 being hydrogen and Z being as defined for X; Y is e.g. >NH, R.sub.9 is e.g. trimethylene, R.sub.2 is e.g. methyl, ethoxy or OH, R.sub.3 and R.sub.4 are e.g. C.sub.1-C.sub.6 alkyl or phenyl, m+n is a number from 1 to 100, n is zero or a number from 1 to 90 and can vary from zero to 90% of the sum of m+n, R.sub.5 is e.g. ethyl and R.sub.6 is e.g. ethoxy, and, when m+n is a number from 3 to 10, R.sub.5 and R.sub.6 together can also form a direct bond.These compounds are effective as stabilizers for organic materials.Type: GrantFiled: June 3, 1991Date of Patent: July 28, 1992Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Graziano Vignali
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Patent number: 5116893Abstract: The novel compounds of the formula (I) ##STR1## in which R.sub.1 is di(C.sub.1 -C.sub.4 -alkyl)amino, C.sub.1 -C.sub.4 -alkoxy, a 5-membered to 7-membered nitrogen containing heterocyclic group with the nitrogen atom bonded to the triazine ring, or a group of the formula (II), ##STR2## R.sub.2 and R.sub.4 which are identical or different are C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, benzyl or 1,2,2,6,6-pentamethyl-4-piperidyl, n is 2 or 3 and, if n is 2, R.sub.3 is a group ##STR3## with R.sub.5 and R.sub.7, which are identical or different, being hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, benzyl or 1,2,2,6,6-pentamethyl-4-piperidyl and R.sub.6 being C.sub.2 -C.sub.12 -alkylene, cyclohexylene, cyclohexylenedimethylene or methylenedicyclohexylene, or R.sub.3 is the divalent radical or a 6-membered to 7-membered heterocyclic compound with two nitrogen atoms which are each bonded to a triazine ring, or, if n is 3, R.sub.3 is a group ##STR4## with R.sub.8 and R.sub.Type: GrantFiled: January 7, 1991Date of Patent: May 26, 1992Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
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Patent number: 5047531Abstract: Piperidine-triazine compounds of the general formula (I) ##STR1## in which R.sub.1 is e.g. hydrogen or methyl, R.sub.2 is e.g. C.sub.2 -C.sub.6 alkylene, R.sub.3 is e.g. a group ##STR2## ##STR3## can be used as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.Type: GrantFiled: August 2, 1989Date of Patent: September 10, 1991Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Graziano Vignali
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Patent number: 5039722Abstract: The new compounds of formula (I) ##STR1## in which R.sub.1 is e.g. hydrogen or methyl, R.sub.2 is e.g. a group --OR.sub.5 or ##STR2## in which R.sub.5 is e.g. 2,2,6,6-tetramethyl-4-piperidyl or 1,2,2,6,6-pentamethyl-4-piperidyl, R.sub.6 and R.sub.7 which are identical or different are e.g. C.sub.1 -C.sub.8 alkyl, tetrahydrofurfuryl, 2,2,6,6-tetramethyl-4-piperidyl or 1,2,2,6,6-pentamethyl-4-piperidyl, or R.sub.6 is also hydrogen, or the group ##STR3## is e.g. 4-morpholinyl, R.sub.3 and R.sub.4 which are identical or different are e.g. hydrogen, methyl, 2,2,6,6-tetramethyl-4-piperidyl or 1,2,2,6,6-pentamethyl-4-piperidyl, m and n are e.g. 3, and X is e.g. --O-- or ##STR4## where R.sub.9 is C.sub.1 -C.sub.8 alkyl, tetrahydrofurfuryl, 2,2,6,6-tetramethyl-4-piperidyl or 1,2,2,6,6-pentamethyl-4-piperidyl, are effective as light stabilizer, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.Type: GrantFiled: December 21, 1989Date of Patent: August 13, 1991Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta
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Patent number: 5030729Abstract: Compounds of formula (I) ##STR1## in which R.sub.1 is hydrogen, O.degree., CN, NO, cyanomethyl, C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.12 -alkenyl or C.sub.3 -C.sub.12 -alkynyl subject to the proviso that the carbon atom attached to the nitrogen atom is a primary carbon atom, C.sub.7 -C.sub.12 -aralkyl, C.sub.1 -C.sub.12 -acyl, 2,3-epoxypropyl, OH-monosubstituted C.sub.2 -C.sub.6 -alkyl or 2,3-dihydroxypropyl, R.sub.2 is hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.18 -cycloalkyl, C.sub.6 -C.sub.18 -aryl or C.sub.7 -C.sub.18 -aryalkyl, R.sub.3 is C.sub.6 -C.sub.18 -aryl or a group of the formula (II) ##STR2## in which R.sub.1 is as defined above, n is an integer from 1 to 4 and R.sub.4 is an organic or inorganic radical of a valency equal to n are useful for stabilizing organic material against oxidative, thermal and/or light induced degradation.Type: GrantFiled: March 1, 1990Date of Patent: July 9, 1991Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta
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Patent number: 5026749Abstract: The novel compounds of the formula (I) ##STR1## in which n is 1 or 2, R.sub.1 is hydrogen, O.multidot., OH, NO, CH.sub.2 CN, C.sub.1 -C.sub.8 -alkyl, allyl, benzyl, hydroxyalkyl, alkoxy, cycloalkoxy or acyl, R.sub.2 is alkyl, cycloalkyl, phenylalkyl, alkoxyalkyl, tetrahydrofurfuryl or a group of the formula (II) and A is a monovalent or divalent moiety, in which R.sub.1 is as defined above, and, if n=1, A is a group of the formula (III) in which each R.sub.9 independently is hydrogen or methyl, r is zero or 1 and are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials.Type: GrantFiled: May 14, 1990Date of Patent: June 25, 1991Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
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Patent number: 4999392Abstract: Novel piperidine compounds of the general formula (I) ##STR1## in which m is an integer from 1 to 4, R.sub.1 and R.sub.2 are as defined in claim 1 and at least one 2,2,6,6-tetramethylpiperidinyl group, being present in R.sub.1 or R.sub.2 are useful as light stabilizers, heat stabilizers and oxidation stabilizers for organic material, especially for synthetic polymers.Type: GrantFiled: July 21, 1988Date of Patent: March 12, 1991Assignee: Ciba-Geigy CorproationInventors: Giuseppe Cantatore, Valerio Borzatta
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Patent number: 4997938Abstract: The novel compounds of the formula (I) ##STR1## in which R.sub.1 is di(C.sub.1 -C.sub.4 -alkyl)amino, C.sub.1 -C.sub.4 -alkoxy, a 5-membered to 7-membered nitrogen containing heterocyclic group with the nitrogen atom bonded to the triazine ring, or a group of the formula (II), ##STR2## R.sub.2 and R.sub.4 which are identical or different are C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, benzyl or 1,2,2,6,6-pentamethyl-4-piperidyl, n is 2 or 3 and, if n is 2, R.sub.3 is a group ##STR3## with R.sub.5 and R.sub.7, which are identical or different, being hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, benzyl or 1,2,2,6,6-pentamethyl-4-piperidyl and R.sub.6 being C.sub.2 -C.sub.12 -alkylene, cyclohexylene, cyclohexylenedimethylene or methylenedicyclohexylene, or R.sub.3 is the divalent radical of a 6-membered to 7-membered heterocyclic compound with two nitrogen atoms which are each bonded to a triazine ring, or, if n is 3, R.sub.3 is a group ##STR4## with R.sub.8 and R.sub.Type: GrantFiled: December 8, 1989Date of Patent: March 5, 1991Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
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Patent number: 4992493Abstract: The compounds of the formula (I) ##STR1## in which R.sub.1 is C.sub.1 -C.sub.8 -alkyloxy, allyloxy, allylamino, di(C.sub.1 -C.sub.4 -alkyl)-amino, diallylamino, a 5-membered to 7-membered nitrogen containing heterocyclic group with the nitrogen atom linked to the triazine ring, or a group of the formula (II), ##STR2## R.sub.2 is hydrogen, O, OH, NO, CH.sub.2 CN, C.sub.1 -C.sub.8 -alkyl, allyl, benzyl, C.sub.1 -C.sub.8 -acyl, C.sub.1 -C.sub.18 -alkyloxy, C.sub.5 -C.sub.12 -cycloalkyloxy or OH-monosubstituted C.sub.2 -C.sub.4 -alkyl, R.sub.3 and R.sub.5 independently are hydrogen, C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.12 -cycloalkyl, C.sub.7 -C.sub.9 -phenylalkyl, tetrahydrofurfuryl, C.sub.2 -C.sub.4 -alkyl monosubstituted by OH, by C.sub.1 -C.sub.4 -alkyloxy or by di(C.sub.1 -C.sub.4 -alkyl)amino, or a group of the formula (III) ##STR3## with R.sub.2 as defined above, R.sub.4 is hydrogen, C.sub.1 -C.sub.Type: GrantFiled: September 6, 1989Date of Patent: February 12, 1991Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
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Patent number: 4987228Abstract: Polytriazine compounds having a number average molecular weight from 1000 to 20,000 and containing recurring piperidylamidinotriazine structural units of the formula (IA) ##STR1## or a combination of said structural units of the formula (IA) with recurring structural units of the formula (IB)[L.sub.2 --L.sub.3 ] (IB)with molar proportions of (IA) and (IB) from 30% to 100% for (IA) and 0 to 70% for (IB),wherein A is a group of the formula (II) ##STR2## and L.sub.1, L.sub.2, L.sub.3, R.sub.1 and R.sub.2 are as defined in claim 1, can be used as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers.Type: GrantFiled: July 31, 1989Date of Patent: January 22, 1991Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta
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Patent number: 4948889Abstract: A compound selected from the group consisting of compounds of the formula (I) ##STR1## The compounds of the formula (I) are useful as light stabilizers, heat stabilizers, and oxidation stabilizers.Type: GrantFiled: March 14, 1988Date of Patent: August 14, 1990Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Franca Masina, Valerio Borzatta
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Patent number: 4933451Abstract: The present invention relates to novel bis-piperidyl-triazine compounds with 2 or more triazine rings, to their use as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, in particular synthetic polymers, and to the organic materials thus stabilized.Type: GrantFiled: May 22, 1989Date of Patent: June 12, 1990Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina
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Patent number: 4927930Abstract: The present invention relates to novel piperidyl-triazine compounds with 2 or more triazine rings, to their use as light stabilizers, heat stabilizers and oxidation stabilizers for organic materials, and to the organic materials thus stabilized.Type: GrantFiled: May 24, 1989Date of Patent: May 22, 1990Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta, Franca Masina