Patents by Inventor Salvatore Coffa
Salvatore Coffa 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: 11901863Abstract: An oscillator circuit includes a total of N (N?2) class-D oscillator circuits stacked together between a supply voltage node and a reference voltage node. The output ports of adjacent class-D oscillator circuits in the disclosed oscillator circuit are coupled together by capacitors to ensure frequency and phase synchronization for the frequency signals generated by the class-D oscillator circuits. Compared with a reference oscillator circuit formed of a single class-D oscillator circuit, the oscillation amplitude of each of the class-D oscillator circuits in the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit, and the current consumption of the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit.Type: GrantFiled: March 2, 2023Date of Patent: February 13, 2024Assignee: STMICROELECTRONICS S.R.L.Inventors: Simone Spataro, Salvatore Coffa, Egidio Ragonese
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Publication number: 20230353091Abstract: An oscillator circuit includes a total of N (N?2) class-D oscillator circuits stacked together between a supply voltage node and a reference voltage node. The output ports of adjacent class-D oscillator circuits in the disclosed oscillator circuit are coupled together by capacitors to ensure frequency and phase synchronization for the frequency signals generated by the class-D oscillator circuits. Compared with a reference oscillator circuit formed of a single class-D oscillator circuit, the oscillation amplitude of each of the class-D oscillator circuits in the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit, and the current consumption of the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit.Type: ApplicationFiled: March 2, 2023Publication date: November 2, 2023Inventors: Simone Spataro, Salvatore Coffa, Egidio Ragonese
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Patent number: 11621670Abstract: An oscillator circuit includes a total of N (N?2) class-D oscillator circuits stacked together between a supply voltage node and a reference voltage node. The output ports of adjacent class-D oscillator circuits in the disclosed oscillator circuit are coupled together by capacitors to ensure frequency and phase synchronization for the frequency signals generated by the class-D oscillator circuits. Compared with a reference oscillator circuit formed of a single class-D oscillator circuit, the oscillation amplitude of each of the class-D oscillator circuits in the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit, and the current consumption of the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit.Type: GrantFiled: April 28, 2022Date of Patent: April 4, 2023Assignees: STMicroelectronics S.r.l., Université degli studi di CataniaInventors: Simone Spataro, Salvatore Coffa, Egidio Ragonese
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Patent number: 9103787Abstract: A microfluidic diagnostic device (1, 50) comprising a substrate (4); a compatible layer (6) formed on a first face (4a) of the substrate (4); a structural layer (8), formed on top of the compatible layer (6); a channel (10), formed in the structural layer (8) and limited underneath by the compatible layer (6), optically accessible by a first luminous radiation having a first wavelength (?e); and a cover layer (18) made of a material transparent to the first wavelength (?e), arranged on top of the structural layer (8) and sealing the channel (10) at the top, wherein the compatible layer (6) has a thickness equal to approximately a quarter of the first wavelength (?e) divided by the refraction index of the compatible layer (6), or equal to an odd multiple of a quarter of the first wavelength (?e) divided by the refraction index of the compatible layer (6).Type: GrantFiled: May 19, 2011Date of Patent: August 11, 2015Assignee: STMicroelectronics S.r.l.Inventors: Lucio Renna, Clelia Galati, Natalia Maria Rita Spinella, Salvatore Coffa
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Patent number: 9006558Abstract: A solar panel may include a first multi-cell thin-film photovoltaic module of a first fabrication type including a transparent support forming a front surface of the panel, a first pair of connection terminals on the transparent support, and first cells of a certain area, being on the transparent support, and being connected in series to the first pair of connection terminals. The solar panel may include a second multi-cell thin-film photovoltaic module of a second fabrication type comprising a support forming a rear surface of the panel, a second pair of connection terminals on the support, and second cells of a certain area, being on the support, and being connected in series to the second pair of connection terminals.Type: GrantFiled: February 11, 2010Date of Patent: April 14, 2015Assignee: STMicroelectronics S.R.L.Inventors: Salvatore Lombardo, Salvatore Coffa
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Patent number: 8575720Abstract: A process is described for integrating, on an inert substrate, a device having at least one passive component and one active component. The process comprises: deposition of a protection dielectric layer on the inert substrate; formation of a polysilicon island on the protection dielectric layer; integration of the active component on the polysilicon island; deposition of the covering dielectric layer on the protection dielectric layer and on the active component; integration of the passive component on the covering dielectric layer; formation of first contact structures in openings realised in the covering dielectric layer in correspondence with active regions of the active component; and formation of second contact structures in correspondence with the passive component. An integrated device obtained through this process is also described.Type: GrantFiled: May 14, 2007Date of Patent: November 5, 2013Assignee: STMicroelectronics S.r.l.Inventors: Salvatore Leonardi, Salvatore Coffa, Claudia Caligiore, Francesca Paola Tramontana
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Patent number: 8470283Abstract: A method for growing carbon nanotubes having a determined chirality includes fragmenting at least one initial carbon nanotube having a determined chirality to obtain at least two portions of carbon nanotube. Each portion has a free growth end. Atoms of carbon are supplied with an autocatalyst addition of the atoms of carbon at the free growth end of each portion of nanotube to determine an elongation or growth of the nanotube.Type: GrantFiled: May 3, 2006Date of Patent: June 25, 2013Assignee: STMicroelectronics S.R.L.Inventors: Vincenzo Vinciguerra, Maria Fortuna Bevilacqua, Francesco Buonocore, Salvatore Coffa
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Patent number: 8304144Abstract: Fuel cells are formed in a single layer of conductive monocrystalline silicon including a succession of electrically isolated conductive silicon bodies separated by narrow parallel trenches etched through the whole thickness of the silicon layer. Semicells in a back-to-back configuration are formed over etch surfaces of the separation trenches. Each semicell formed on the etch surface of one of the silicon bodies forming an elementary cell in cooperation with an opposite semicell formed on the etch surface of the next silicon body of the succession, is separated by an ion exchange membrane resin filling the separation trench between the opposite semicells forming a solid electrolyte of the elementary cell. Each semicell includes a porous conductive silicon region permeable to fluids, extending for a certain depth from the etch surface of the silicon body, at least partially coated by a non passivable metallic material.Type: GrantFiled: May 4, 2010Date of Patent: November 6, 2012Assignee: STMicroelectronics S.R.L.Inventors: Giuseppe D'Arrigo, Salvatore Coffa
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Patent number: 8232010Abstract: A process for the production of hydrogen for micro fuel cells, comprises the successive steps of: continuously supplying a catalytic bed with an aqueous solution of sodium borohydride, the catalytic bed being made of at least one metal chosen among cobalt, nickel, platinum, ruthenium with obtainment of hydrogen and of a by-product comprising sodium metaborate, continuously recovering the hydrogen thus obtained and supplying, with said hydrogen as it is as obtained, a micro fuel cell which transforms hydrogen into electric energy. An apparatus provides continuous supply of hydrogen to a micro fuel cell. An integrated system structured for continuously producing and supplying hydrogen to a micro fuel cell and for converting the continuously supplied hydrogen into electric energy.Type: GrantFiled: October 5, 2007Date of Patent: July 31, 2012Assignee: STMicroelectronics S.r.l.Inventors: Roberta Giuffrida, Marco Antonio Salanitri, Giuseppe Emanuele Spoto, Stefania Calamia, Salvatore Leonardi, Salvatore Coffa, Roberta Zito
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Patent number: 8143086Abstract: Described herein is an optically controlled electrical-switch device which includes a first current-conduction terminal and a second current-conduction terminal, and a carbon nanotube connected between the first and the second current-conduction terminals, the carbon nanotube being designed to be impinged upon by electromagnetic radiation and having an electrical conductivity that can be varied by varying the polarization of the electromagnetic radiation incident thereon. In particular, the carbon nanotube may for example, in given conditions of electrical biasing, present a high electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially parallel to the axis of the carbon nanotube itself, and a reduced electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially orthogonal to the axis of the carbon nanotube itself.Type: GrantFiled: April 8, 2011Date of Patent: March 27, 2012Assignee: STMicroelectronics S.r.l.Inventors: Michele Portico Ambrosio, Maria Grazia Maglione, Maria Fortuna Bevilacqua, Luigi Occhipinti, Salvatore Coffa, Salvatore Castorina
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Patent number: 8097868Abstract: A galvanic optocoupler of the type monolithically integrated on a silicon substrate and having at least one luminous source and a photodetector interfaced by means of a galvanic insulation layer. The photodetector can be a phototransistor realized in the silicon substrate, and the galvanic insulation layer (40) is a passivation layer of this phototransistor. The luminous source, above the galvanic insulation layer includes an integrated LED having a first and second polysilicon layer with function of cathode and anode, respectively, these first and second layers enclosing at least one light emitter layer, in particular a silicon oxide layer enriched with silicon (SRO). An integration process of a galvanic optocoupler thus made, in particular in BCD3s technology is provided.Type: GrantFiled: January 24, 2008Date of Patent: January 17, 2012Assignee: STMicroelectronics S.r.l.Inventors: Mariantonietta Monaco, Massimiliano Fiorito, Gianpiero Montalbano, Salvatore Coffa
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Publication number: 20110291026Abstract: A microfluidic diagnostic device (1, 50) comprising a substrate (4); a compatible layer (6) formed on a first face (4a) of the substrate (4); a structural layer (8), formed on top of the compatible layer (6); a channel (10), formed in the structural layer (8) and limited underneath by the compatible layer (6), optically accessible by a first luminous radiation having a first wavelength (?e); and a cover layer (18) made of a material transparent to the first wavelength (?e), arranged on top of the structural layer (8) and sealing the channel (10) at the top, wherein the compatible layer (6) has a thickness equal to approximately a quarter of the first wavelength (?e) divided by the refraction index of the compatible layer (6), or equal to an odd multiple of a quarter of the first wavelength (?e) divided by the refraction index of the compatible layer (6).Type: ApplicationFiled: May 19, 2011Publication date: December 1, 2011Applicant: STMICROELECTRONICS S.R.I.Inventors: Lucio RENNA, Clelia GALATI, Natalia Maria Rita SPINELLA, Salvatore COFFA
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Publication number: 20110212566Abstract: Described herein is an optically controlled electrical-switch device which includes a first current-conduction terminal and a second current-conduction terminal, and a carbon nanotube connected between the first and the second current-conduction terminals, the carbon nanotube being designed to be impinged upon by electromagnetic radiation and having an electrical conductivity that can be varied by varying the polarization of the electromagnetic radiation incident thereon. In particular, the carbon nanotube may for example, in given conditions of electrical biasing, present a high electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially parallel to the axis of the carbon nanotube itself, and a reduced electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially orthogonal to the axis of the carbon nanotube itself.Type: ApplicationFiled: April 8, 2011Publication date: September 1, 2011Applicant: STMICROELECTRONICS S.R.L.Inventors: MICHELE PORTICO AMBROSIO, MARIA GRAZIA MAGLIONE, MARIA FORTUNA BEVILACQUA, LUIGI OCCHIPINTI, SALVATORE COFFA, SALVATORE CASTORINA
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Patent number: 8008102Abstract: The present invention relates to a new light emitters that exploit the use of semiconducting single walled carbon nanotubes (SWNTs). Experimental evidences are given on how it is possible, within the standard silicon technology, to devise light emitting diodes (LEDs) emitting in the infrared IR where light emission results from a radiative recombination of electron and holes on semiconducting single walled carbon nanotubes (SWNTs-LED). We will also show how it is possible to implement these SWNTs-LED in order to build up a laser source based on the emission properties of SWNTs. A description of the manufacturing process of such devices is also given.Type: GrantFiled: December 18, 2007Date of Patent: August 30, 2011Assignee: STMicroelectronics S.r.l.Inventors: Vincenzo Vinciguerra, Francesco Buonocore, Maria Fortuna Bevilacqua, Salvatore Coffa
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Patent number: 7944011Abstract: Described herein is an optically controlled electrical-switch device which includes a first current-conduction terminal and a second current-conduction terminal, and a carbon nanotube connected between the first and the second current-conduction terminals, the carbon nanotube being designed to be impinged upon by electromagnetic radiation and having an electrical conductivity that can be varied by varying the polarization of the electromagnetic radiation incident thereon. In particular, the carbon nanotube may for example, in given conditions of electrical biasing, present a high electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially parallel to the axis of the carbon nanotube itself, and a reduced electrical conductivity when it is impinged upon by electromagnetic radiation having a given wavelength and a polarization substantially orthogonal to the axis of the carbon nanotube itself.Type: GrantFiled: August 31, 2009Date of Patent: May 17, 2011Assignee: STMicroelectronics, S.r.l.Inventors: Michele Portico Ambrosio, Maria Grazia Maglione, Maria Fortuna Bevilacqua, Luigi Occhipinti, Salvatore Coffa, Salvatore Castorina
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Patent number: 7829904Abstract: A device for emitting optical radiation is integrated on a substrate of semiconductor material. The device includes an active layer having a main area for generating radiation, and first and second electro-conductive layers having an electric signal that generates an electric field to which an exciting current is associated. In the device, a dielectric region is formed between the first and second layers to space peripheral portions of the first and second layers so that the electric field in the main area is higher than the electric field between the peripheral portions, thereby facilitating generation of the exciting current in the main area. A method of manufacturing is also disclosed.Type: GrantFiled: June 5, 2006Date of Patent: November 9, 2010Assignee: STMicroelectronics S.R.L.Inventors: Salvatore Coffa, Maria Castagna, Anna Muscara', Mariantonietta Monaco
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Patent number: 7804078Abstract: The present disclosure relates to an architecture of a device with galvanic optocoupling of the type having at least one optical source and one optical detector, optically connected by means of an insulation layer that functions to transmission optical signals, and having at least one input terminal and one output terminal, the optical source and the optical detector connected to a respective first and second voltage reference. The optical source is realized by a structure integrated directly above the insulation layer in correspondence with the optical detector, the architecture thus completely realized inside a single integration island.Type: GrantFiled: January 24, 2008Date of Patent: September 28, 2010Assignee: STMicroelectronics S.r.l.Inventors: Massimiliano Fiorito, Mariantonietta Monaco, Gianpiero Montalbano, Salvatore Coffa
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Publication number: 20100216046Abstract: Fuel cells are formed in a single layer of conductive monocrystalline silicon including a succession of electrically isolated conductive silicon bodies separated by narrow parallel trenches etched through the whole thickness of the silicon layer. Semicells in a back-to-back configuration are formed over etch surfaces of the separation trenches. Each semicell formed on the etch surface of one of the silicon bodies forming an elementary cell in cooperation with an opposite semicell formed on the etch surface of the next silicon body of the succession, is separated by an ion exchange membrane resin filling the separation trench between the opposite semicells forming a solid electrolyte of the elementary cell. Each semicell includes a porous conductive silicon region permeable to fluids, extending for a certain depth from the etch surface of the silicon body, at least partially coated by a non passivable metallic material.Type: ApplicationFiled: May 4, 2010Publication date: August 26, 2010Applicant: STMicroelectronics S.r.l.Inventors: Giuseppe D'Arrigo, Salvatore Coffa
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Publication number: 20100200043Abstract: A solar panel may include a first multi-cell thin-film photovoltaic module of a first fabrication type including a transparent support forming a front surface of the panel, a first pair of connection terminals on the transparent support, and first cells of a certain area, being on the transparent support, and being connected in series to the first pair of connection terminals. The solar panel may include a second multi-cell thin-film photovoltaic module of a second fabrication type comprising a support forming a rear surface of the panel, a second pair of connection terminals on the support, and second cells of a certain area, being on the support, and being connected in series to the second pair of connection terminals.Type: ApplicationFiled: February 11, 2010Publication date: August 12, 2010Applicant: STMicroelectronics S.r.l.Inventors: Salvatore Lombardo, Salvatore Coffa
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Patent number: 7763372Abstract: Fuel cells are formed in a single layer of conductive monocrystalline silicon including a succession of electrically isolated conductive silicon bodies separated by narrow parallel trenches etched through the whole thickness of the silicon layer. Semicells in a back-to-back configuration are formed over etch surfaces of the separation trenches. Each semicell formed on the etch surface of one of the silicon bodies forming an elementary cell in cooperation with an opposite semicell formed on the etch surface of the next silicon body of the succession, is separated by an ion exchange membrane resin filling the separation trench between the opposite semicells forming a solid electrolyte of the elementary cell. Each semicell includes a porous conductive silicon region permeable to fluids, extending for a certain depth from the etch surface of the silicon body, at least partially coated by a non passivable metallic material.Type: GrantFiled: May 12, 2006Date of Patent: July 27, 2010Assignee: STMicroelectronics S.R.L.Inventors: Giuseppe D'Arrigo, Salvatore Coffa