Patents by Inventor Alessandro Stuart Savoia
Alessandro Stuart Savoia 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: 11800806Abstract: A method for fabricating a multi-cell electroacoustic transducer comprises placing a rail layer onto a base, the rail layer comprising a plurality of apertures arranged in an array, filling cavities in the rail layer with a polymer, and applying a flexural plate to the rail layer. The transducer achieves high transmission sensitivity across a broad bandwidth. The transducer may be designed to have a broad or a focused directivity pattern, or may be multi-frequency, depending on the particular application and has a range of applications.Type: GrantFiled: October 22, 2020Date of Patent: October 24, 2023Assignee: Microtech Medical Technologies Ltd.Inventors: Alessandro Stuart Savoia, Giosuè Caliano, Alexander Melamud, Eric S. Tammam
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Patent number: 11440051Abstract: A method of forming a capacitive micromachined ultrasonic transducer (CMUT) device includes bonding a CMUT substrate to a silicon on insulator (SOI) substrate. The CMUT substrate has a first thickness and the SOI substrate includes a handle, a buried oxide layer, and a device layer. At least one of the CMUT substrate or the SOI substrate includes a patterned dielectric layer. The device layer is bonded to the patterned dielectric layer to form a plurality of sealed cavities and the device layer forms a diaphragm of the plurality of cavities. The method further includes reducing the first thickness of the CMUT substrate to a second thickness and forming a plurality of through-silicon vias from a second surface of the CMUT substrate opposite the first surface.Type: GrantFiled: February 26, 2020Date of Patent: September 13, 2022Assignee: GENERAL ELECTRIC COMPANYInventors: Yizhen Lin, Marco Francesco Aimi, Alessandro Stuart Savoia
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Publication number: 20220169497Abstract: A micromechanical device for transducing acoustic waves in a propagation medium, comprising: a body; a first electrode structure superimposed to the body and electrically insulated from the body, the first electrode structure and the body defining between them a first buried cavity; and a first piezoelectric element superimposed to the first electrode structure, wherein the body, the first electrode structure, and the buried cavity form a first capacitive ultrasonic transducer, and the first electrode structure and the first piezoelectric element form a first piezoelectric ultrasonic transducer.Type: ApplicationFiled: November 30, 2021Publication date: June 2, 2022Applicant: STMICROELECTRONICS S.r.l.Inventors: Alessandro Stuart SAVOIA, Domenico GIUSTI, Marco FERRERA, Fabio QUAGLIA
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Publication number: 20210260622Abstract: A method of forming a capacitive micromachined ultrasonic transducer (CMUT) device includes bonding a CMUT substrate to a silicon on insulator (SOI) substrate. The CMUT substrate has a first thickness and the SOI substrate includes a handle, a buried oxide layer, and a device layer. At least one of the CMUT substrate or the SOI substrate includes a patterned dielectric layer. The device layer is bonded to the patterned dielectric layer to form a plurality of sealed cavities and the device layer forms a diaphragm of the plurality of cavities. The method further includes reducing the first thickness of the CMUT substrate to a second thickness and forming a plurality of through-silicon vias from a second surface of the CMUT substrate opposite the first surface.Type: ApplicationFiled: February 26, 2020Publication date: August 26, 2021Inventors: Yizhen Lin, Marco Francesco Aimi, Alessandro Stuart Savoia
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Publication number: 20210043825Abstract: The present invention relates to a transducer device having a planar array of electroacoustic cells, each including a piezoelectric bilayer unit. The transducer device achieves high transmission sensitivity across a broad bandwidth. The transducer device may be designed to have a broad or a focused directivity pattern, or may be multi-frequency, depending on the particular application and has a range of applications. For example, the transducer device may be used with an implanted passive ultrasonically excitable resonating sensor, to excite the sensor and/or to interrogate the sensor, for example in conjunction with Doppler-based analysis of the resonance frequency of the sensor, and/or to locate an implanted sensor. The invention also relates to a method of manufacturing the device.Type: ApplicationFiled: October 22, 2020Publication date: February 11, 2021Inventors: Alessandro Stuart SAVOIA, Giosuè CALIANO, Alexander MELAMUD, Eric S. TAMMAM
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Patent number: 10847708Abstract: The present invention relates to a transducer device having a planar array of electroacoustic cells, each including a piezoelectric bilayer unit. The transducer device achieves high transmission sensitivity across a broad bandwidth. The transducer device may be designed to have a broad or a focused directivity pattern, or may be multi-frequency, depending on the particular application and has a range of applications. For example, the transducer device may be used with an implanted passive ultrasonically excitable resonating sensor, to excite the sensor and/or to interrogate the sensor, for example in conjunction with Doppler-based analysis of the resonance frequency of the sensor, and/or to locate an implanted sensor. The invention also relates to a method of manufacturing the device.Type: GrantFiled: July 10, 2015Date of Patent: November 24, 2020Assignee: Microtech Medical Technologies Ltd.Inventors: Alessandro Stuart Savoia, Giosuè Caliano, Alexander Melamud, Eric S. Tammam
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Publication number: 20160013394Abstract: The present invention relates to a transducer device having a planar array of electroacoustic cells, each including a piezoelectric bilayer unit. The transducer device achieves high transmission sensitivity across a broad bandwidth. The transducer device may be designed to have a broad or a focused directivity pattern, or may be multi-frequency, depending on the particular application and has a range of applications. For example, the transducer device may be used with an implanted passive ultrasonically excitable resonating sensor, to excite the sensor and/or to interrogate the sensor, for example in conjunction with Doppler-based analysis of the resonance frequency of the sensor, and/or to locate an implanted sensor. The invention also relates to a method of manufacturing the device.Type: ApplicationFiled: July 10, 2015Publication date: January 14, 2016Inventors: Alessandro Stuart SAVOIA, Giosuè CALIANO, Alexander MELAMUD, Eric S. TAMMAM
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Publication number: 20100137718Abstract: Ultrasound transducer comprising an array of electro-acoustic micro-cells, a first and a second group of transducer elements arranged substantially along two directions (x, y), each element being defined by a group of micro-cells of the array, at least part of the micro-cells of each group being electrically interconnected by a first connection pattern having shape with main orientation along one of the two directions (x, y), characterized in that each group of micro-cells defining each element comprises micro-cells interconnected by further connection pattern or patterns having shape with main orientation along the other of the two directions (y, x).Type: ApplicationFiled: November 23, 2007Publication date: June 3, 2010Inventors: Massimo Pappalardo, Giosue Caliano, Alessandro Caronti, Alessandro Stuart Savoia, Philipp Gatta, Cristina Longo, Vito Bavaro
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Patent number: 7477572Abstract: The invention relates to an electro-acoustic transducer, particularly an ultrasonic transducer, comprising a plurality of electrostatic micro-cells of the cMUT type. The electrostatic micro-cells are arranged in homogeneous groups of micro-cells having the same geometrical characteristics. The micro-cells of each group have geometries different from the geometry of the micro-cells of the other group or groups.Type: GrantFiled: September 13, 2006Date of Patent: January 13, 2009Assignee: Esaote, S.p.A.Inventors: Alessandro Caronti, Giosuè Caliano, Alessandro Stuart Savoia, Philipp Gatta, Massimo Pappalardo
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Patent number: 7359286Abstract: The invention concerns a capacitive ultrasonic transducer, comprising an external layer operating as an external plate, provided with electrode means, capable to vibrate, and a stiff substrate, in turn provided with electrode means, wherein it further comprises n levels, with n?2, interposed between the plate and the substrate, each level including a plurality of cavities, and m interface intermediate layers, capable to vibrate, among said n levels, with m=(n?1), the cavities of each one of said n levels being further defined by support means connected between faced surfaces of layers adjacent to said cavities, each one of said m intermediate layers being provided with electrode means, whereby the cavities of each level are interposed between a pair of electrode means belonging to either two adjacent intermediate layers or to an intermediate layer and to one out of the substrate and the plate.Type: GrantFiled: May 2, 2007Date of Patent: April 15, 2008Assignee: Esaote S.p.A.Inventors: Alessandro Stuart Savoia, Giosuè Caliano, Alessandro Caronti, Cristina Longo, Massimo Pappalardo
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Publication number: 20070258332Abstract: The invention concerns a capacitive ultrasonic transducer, comprising an external layer operating as an external plate, provided with electrode means, capable to vibrate, and a stiff substrate, in turn provided with electrode means, wherein it further comprises n levels, with n?2, interposed between the plate and the substrate, each level including a plurality of cavities, and m interface intermediate layers, capable to vibrate, among said n levels, with m=(n?1), the cavities of each one of said n levels being further defined by support means connected between faced surfaces of layers adjacent to said cavities, each one of said m intermediate layers being provided with electrode means, whereby the cavities of each level are interposed between a pair of electrode means belonging to either two adjacent intermediate layers or to an intermediate layer and to one out of the substrate and the plate.Type: ApplicationFiled: May 2, 2007Publication date: November 8, 2007Applicant: ESAOTE S.P.A.Inventors: Alessandro STUART SAVOIA, Giosue CALIANO, Alessandro CARONTI, Cristina LONGO, Massimo PAPPALARDO