Patents by Inventor Francesco Botti
Francesco Botti 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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Publication number: 20240088844Abstract: Signal processing is applied to a digital audio input signal to provide an analog audio output signal using a switching converter circuit driven by a pulse-width-modulated (PWM) signal. The analog audio output signal is sensed to provide an analog feedback signal. The signal processing that is applied includes: converting the digital audio input signal to producing an analog replica; producing an analog error signal indicative of a difference between the analog replica of the digital input signal and the analog feedback signal; converting the analog error signal to produce a digital error signal; digitally filtering the digital error signal to produce a filtered digital error signal; and generating the PWM signal from the filtered digital error signal.Type: ApplicationFiled: September 8, 2023Publication date: March 14, 2024Applicant: STMicroelectronics S.r.l.Inventors: Edoardo BOTTI, Francesco STILGENBAUER, Piero MALCOVATI, Edoardo BONIZZONI, Matteo DE FERRARI
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Publication number: 20210387432Abstract: A sealant layer assembly which allows a sealant layer to be applied on a tire outside of tire production plants. The assembly comprises a sealant layer to be applied on the surface of an inner liner layer facing the inner cavity of a tire, a net layer arranged on a first surface of the sealant layer, and at least one non-stick protective layer arranged either on a second surface of the sealant layer opposite the first surface or on the net layer.Type: ApplicationFiled: October 14, 2019Publication date: December 16, 2021Inventors: Giuseppe Pezzullo, Francesco Botti
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Patent number: 10233266Abstract: A rubber compound containing silicon dioxide for the production of tires and comprising a polymer base with a cross-linkable unsaturated chain, a filler comprising silicon dioxide, a silane bonding agent and a vulcanization system. The filler further comprises a composite mineral consisting of a mineral of the zeolite family, onto which a layer of silicon dioxide has been deposited.Type: GrantFiled: March 11, 2016Date of Patent: March 19, 2019Assignee: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Raffaele Di Ronza
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Publication number: 20180057615Abstract: A rubber compound containing silicon dioxide for the production of tyres and comprising a polymer base with a cross-linkable unsaturated chain, a filler comprising silicon dioxide, a silane bonding agent and a vulcanization system. The filler further comprises a composite mineral consisting of a mineral of the zeolite family, onto which a layer of silicon dioxide has been deposited.Type: ApplicationFiled: March 11, 2016Publication date: March 1, 2018Applicant: BRIDGESTONE CORPORATIONInventors: Francesco BOTTI, Raffaele DI RONZA
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Patent number: 9644085Abstract: A method of producing rubber compounds, in which the polymer base is composed partly of a first polymer material having a glass transition temperature of over ?50° C., and partly of a second polymer material having a glass transition temperature of below ?50° C. and silica as a filler. The method includes a preliminary first polymer material treating step, in which the first polymer material, a silica having a surface area of 80 to 135 m2/g, a silane bonding agent, and at least one nucleophile agent are mixed together; a preliminary second polymer material treating step, in which the second polymer material, a silica having a surface area of 150 to 220 m2/g, a silane bonding agent, and at least one nucleophile agent are mixed together; a mixing step, in which the compounds resulting from the preliminary treating steps are mixed together; and a final step, in which stearic acid and a curing system are added and mixed with the compound being produced.Type: GrantFiled: July 8, 2014Date of Patent: May 9, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Riccardo Ascione, Davide Privitera, Michele Amurri, Pasquale Agoretti
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Patent number: 9534093Abstract: A method of producing a rubber compound containing silica, the method including a step of dispersing the silica in a polymer base, and a following step of mixing the previously formed mixture with curing agents. The step of dispersing the silica in the polymer base includes the following sequence of operations: soaking the polymer base in a liquid silica precursor to form a swollen polymer; —adding the swollen polymer to an organic solvent, and continually stirring the swollen polymer solution; —adding water and a silica synthesizing catalyst to the swollen polymer solution; —precipitating a polymer gel matrix by adding a precipitating agent; —separating and washing the precipitated polymer gel matrix.Type: GrantFiled: April 18, 2013Date of Patent: January 3, 2017Assignee: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Alessandra Bartoloni, Giancarlo Cossu
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Publication number: 20160145424Abstract: A method of producing rubber compounds, in which the polymer base is composed partly of a first polymer material having a glass transition temperature of over ?50° C., and partly of a second polymer material having a glass transition temperature of below ?50° C. and silica as a filler. The method includes a preliminary first polymer material treating step, in which the first polymer material, a silica having a surface area of 80 to 135 m2/g, a silane bonding agent, and at least one nucleophile agent are mixed together; a preliminary second polymer material treating step, in which the second polymer material, a silica having a surface area of 150 to 220 m2/g, a silane bonding agent, and at least one nucleophile agent are mixed together; a mixing step, in which the compounds resulting from the preliminary treating steps are mixed together; and a final step, in which stearic acid and a curing system are added and mixed with the compound being produced.Type: ApplicationFiled: July 8, 2014Publication date: May 26, 2016Applicant: BRIDGESTONE CORPORATIONInventors: Pasquale AGORETTI, Michele AMURRI, Riccardo ASCIONE, Francesco BOTTI, Davide PRIVITERA
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Publication number: 20150368445Abstract: A structural tyre component compound having a cross-linkable, unsaturated-chain polymer base, a reinforcing filler, and curing agents. The compound is composed of a mixture of reinforcing resins, in turn composed of (a) a methylene acceptor resin combined with a methylene donor compound, and (b) a hydrazide-derived resin. The reinforcing filler is composed of a mixture of 20 to 80% by weight of carbon black with a hydrogen-absorption-measured surface area (N2SA) of 100 to 150 m2/g, and 80 to 20% by weight of carbon black with a hydrogen-absorption-measured surface area (N2SA) of 33 to 49 m2/g.Type: ApplicationFiled: February 8, 2014Publication date: December 24, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Pasquale AGORETTI, Francesco BOTTI
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Publication number: 20150329709Abstract: A method of producing rubber compounds having a cross-linkable polymer base at least partly composed of polybutadiene. The method includes a first mixing step in which the cross-linkable polymer base is mixed with at least one reinforcing filler; and at least a second mixing step in which the mix from the first mixing step is mixed with a curing system. The method also includes a preliminary mixing step prior to the first mixing step, and in which only the polybutadiene of the polymer base is mixed with a reinforcing resin, with no reinforcing filler.Type: ApplicationFiled: December 18, 2013Publication date: November 19, 2015Applicant: BRIDGESTONE CORPORATIONInventor: Francesco BOTTI
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Patent number: 9023952Abstract: A method of producing a rubber compound, which includes mixing at least one cross-linkable unsaturated-chain polymer base, silica with a surface area of 100-220 m2/g, a first silane coupling agent in the polysulphide organosilane class, and a second silane coupling agent in the class of mercaptosilane protected in the form of thioester, and whereby the second silane coupling agent is added to the mix after the first silane coupling agent has reacted with the silica.Type: GrantFiled: December 23, 2011Date of Patent: May 5, 2015Assignee: Bridgestone CorporationInventors: Francesco Botti, Davide Privitera
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Publication number: 20150119516Abstract: A method of producing a rubber compound containing silica, the method including a step of dispersing the silica in a polymer base, and a following step of mixing the previously formed mixture with curing agents. The step of dispersing the silica in the polymer base includes the following sequence of operations: soaking the polymer base in a liquid silica precursor to form a swollen polymer; —adding the swollen polymer to an organic solvent, and continually stirring the swollen polymer solution; —adding water and a silica synthesizing catalyst to the swollen polymer solution; —precipitating a polymer gel matrix by adding a precipitating agent; —separating and washing the precipitated polymer gel matrix.Type: ApplicationFiled: April 18, 2013Publication date: April 30, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Alessandra Bartoloni, Giancarlo Cossu
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Publication number: 20150031789Abstract: A rubber tyre compound having a polymer base; a curing system, which cures the polymer base by means of heating; and basalt fibres with a length/diameter ratio ranging from 20 to 2000.Type: ApplicationFiled: December 24, 2012Publication date: January 29, 2015Applicant: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Pasquale Agoretti
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Publication number: 20140371380Abstract: A rubber tyre compound having at least a polymer base; a filler; a curing system; and treated silica with an adsorbed curing activator in the group including sulphenamides, benzothiazoles, guanidines and thiurams.Type: ApplicationFiled: January 25, 2013Publication date: December 18, 2014Applicant: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Guido Barbaglia, Giovanni Alessandro Pertusio
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Publication number: 20130310483Abstract: A method of producing a rubber compound, which includes mixing at least one cross-linkable unsaturated-chain polymer base, silica, a first type of silane coupling agent, and a second type of silane coupling agent. The second type of silane coupling agent is added to the mix after the first type of silane coupling agent has reacted with the silica. The first type of silane coupling agent is a trialkoxymercaptoalkyl-silane, and the second type of silane coupling agent is a mercaptosilane protected in the form of thioester.Type: ApplicationFiled: December 23, 2011Publication date: November 21, 2013Applicant: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Veronica Cantonetti, Davide Privitera
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Publication number: 20130303706Abstract: A method of producing a rubber compound, which includes mixing at least one cross-linkable unsaturated-chain polymer base, silica with a surface area of 100-220 m2/g, a first silane coupling agent in the polysulphide organosilane class, and a second silane coupling agent in the class of mercaptosilane protected in the form of thioester, and whereby the second silane coupling agent is added to the mix after the first silane coupling agent has reacted with the silica.Type: ApplicationFiled: December 23, 2011Publication date: November 14, 2013Applicant: BRIDGESTONE CORPORATIONInventors: Francesco Botti, Davide Privitera
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Publication number: 20120277345Abstract: A mix for a structural component of a tyre, having a cross-linkable polymer base; curing agents; 20-100 phr of a reinforcing filler; and 2-16 phr of a methylene acceptor compound combined with a methylene donor compound. The reinforcing filler is defined by a blend of 20-80% by weight of carbon black classified as N1 or N2, and 80-20% by weight of carbon black classified as N5 or N6.Type: ApplicationFiled: November 17, 2010Publication date: November 1, 2012Applicant: BRIDGESTONE CORPORATIONInventors: Raffaele Di Ronza, Francesco Botti