Patents by Inventor Stefano Serra
Stefano Serra 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).
-
Patent number: 8762081Abstract: A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps of detecting (11) the electric pulses (4) picked up by a first and a second sensor (5, 7), operatively connected to the apparatus (3) and spaced out along it, and generating corresponding electric signals representative of the waveform of the pulses (4), selecting (12) at least one pair of signals, detected in the consecutive sensors (5, 7), and representative of a pair of homologous pulses (4), relating to the same partial discharge and propagating in opposite directions along the apparatus, deriving, for the signals of the selected pair of homologous pulses (4), at least one attenuation parameter, correlated with a quantity that is variable depending on the distance travelled by the pulses (4), calculating (13) the distance betweType: GrantFiled: March 18, 2010Date of Patent: June 24, 2014Assignee: Techimp Technologies S.R.L.Inventors: Stefano Serra, Andrea Cavallini, Gian Carlo Montanari, Gaetano Pasini
-
Patent number: 8676134Abstract: A receiver front-end for use in a transceiver station of a wireless communication network. The transceiver station is associated with an antenna assembly having a primary and at least a secondary antenna. The receiver front-end is adapted for insertion between the antenna assembly and signal processing sections of the transceiver station. The receiver front-end includes a primary and at least a secondary receiving branch, the primary receiving branch being adapted for coupling to the primary antenna and to the signal processing sections of the transceiver station, the secondary receiving branch being adapted for coupling to the secondary antenna and to the signal processing sections. The primary receiving branch has nonsuperconducting components, including at least a non superconducting filter while the secondary receiving branch has at least a superconducting component.Type: GrantFiled: July 4, 2003Date of Patent: March 18, 2014Assignees: Pirelli & C. S.p.A., Telecom Italia S.p.A.Inventors: Renata Mele, Fabrizio Ricci, Stefano Serra
-
Patent number: 8616045Abstract: A method for deriving the concentration of a gas dissolved in an electrical insulating oil (2) comprises the following steps:—preparing a membrane (5) permeable to the gas, interposed between a container (7) of the oil (2) and a measuring chamber (4) that receives a part of the gas through the membrane (5);—measuring the value of gas concentration in the measuring chamber (4);—deriving an estimated value of the concentration of the gas in the oil (2) as a function of the measured value,—the measuring step comprising taking at successive measuring instants a plurality of measurements of the values of gas concentration in the measuring chamber (4);—the deriving step comprising calculating the estimated value of gas concentration in the oil (2), at an instant selected from said measuring instants, according to a non-linear function of the values measured at the selected measuring instant and at one or more of the measuring instants preceding the one selected.Type: GrantFiled: January 10, 2011Date of Patent: December 31, 2013Assignee: Techimp Technologies S.R.L.Inventors: Andrea Cavallini, Fabio Ciani, Stefano Serra, GianCarlo Montanari
-
Patent number: 8467982Abstract: A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps: (11) of detecting the pulses (4) picked up by a first and a second sensor (5, 7), connected to the apparatus (3) and spaced out along the same; (15) of deriving shape, phase and amplitude parameters for each of the signals detected; (17) of separating the sets of signals detected in each sensor into respective subsets which are uniform in terms of pulse waveform; (18) of identifying the subsets of signals relating to partial discharges and classifying them; (19) of correlating the subsets relating to different sensors and similarly classified, in order to derive a pair of subsets of signals relating to the same discharge site (2); (12) of selecting, for the pair of correlated subsets, at least one pair of homologous pulses (4) detType: GrantFiled: March 24, 2010Date of Patent: June 18, 2013Assignee: Techimp Technologies S.R.L.Inventors: Stefano Serra, Andrea Cavallini, Gian Carlo Montanari, Gaetano Pasini
-
Publication number: 20130107410Abstract: An apparatus (1) for measuring the loss factor of an insulator (2) for medium or high voltages, equipped with a tap adapter (3) forming a point for picking up an electrical signal (4), comprises: a reference capacitor (9) having a first electrode (10), which can be connected to the tap adapter, and a second electrode (11); a first voltage detection module (12) operatively connected to the first electrode (10) of the reference capacitor (9) for detecting a signal representative of the voltage applied to the reference capacitor (9); an active electronic device (13) connected to earth and to the second electrode (11) of the reference capacitor (9) and configured to keep the potential of the second electrode (11) at a predetermined reference value; a second voltage detection module (14) operatively connected to an output of the active electronic device (13) in order to detect a signal representative of the electric current that flows through the reference capacitor (9).Type: ApplicationFiled: June 22, 2011Publication date: May 2, 2013Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Rolli, Gianpaolo De Robertis, Stefano Serra, Gian Carlo Montanari
-
Publication number: 20130106442Abstract: An apparatus (1) for measuring the loss factor of an insulator (2) for medium or high voltages, equipped with a tap adapter (3) forming a point for picking up an electrical signal (4), comprises a reference capacitor (9) having a first electrode (10), which can be connected to the tap adapter (3), and a second electrode (11); a first voltage detection module (12) operatively connected to the first electrode (10) of the reference capacitor (9) for detecting a signal representative of the voltage applied to the reference capacitor (9); a generator module connected to the first electrode (10) of the reference capacitor (9) in order to inject a direct electric current into the insulator.Type: ApplicationFiled: June 22, 2011Publication date: May 2, 2013Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Rolli, Gianpaolo De Robertis, Stefano Serra, Gian Carlo Montanari
-
Publication number: 20120330583Abstract: An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broadband HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components representative of common mode electrical signals present in the measuring circuit.Type: ApplicationFiled: March 4, 2011Publication date: December 27, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari, Fabiano Bettio
-
Publication number: 20120319703Abstract: An instrument (1) and a method for detecting partial electric discharges involve acquiring a discharge signal (10), for example picked up by a direct-measuring impedance device (7) through a broadband HF acquisition channel (18), and acquiring the discharge signal (10) in a narrowband LF acquisition channel (180) complying with regulations, using on the LF acquisition channel (180) a trigger controlled in slave mode by a trigger of the broad-band HF acquisition channel (18); they also involve acquiring another discharge signal (32) picked up by an indirect-measuring impedance device (8) through a second narrowband LF acquisition channel (180A) and comparing digital signals (34, 34A) generated in the first and second LF acquisition channels (180, 180A), in order to generate a balanced digital signal (36) without components represenative of common mode electrical signals present in the measuring circuit.Type: ApplicationFiled: March 4, 2011Publication date: December 20, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari, Fabiano Bettio
-
Publication number: 20120291521Abstract: A method for deriving the concentration of a gas dissolved in an electrical insulating oil (2) comprises the following steps:—preparing a membrane (5) permeable to the gas, interposed between a container (7) of the oil (2) and a measuring chamber (4) that receives a part of the gas through the membrane (5);—measuring the value of gas concentration in the measuring chamber (4);—deriving an estimated value of the concentration of the gas in the oil (2) as a function of the measured value,—the measuring step comprising taking at successive measuring instants a plurality of measurements of the values of gas concentration in the measuring chamber (4);—the deriving step comprising calculating the estimated value of gas concentration in the oil (2), at an instant selected from said measuring instants, according to a non-linear function of the values measured at the selected measuring instant and at one or more of the measuring instants preceding the one selected.Type: ApplicationFiled: January 10, 2011Publication date: November 22, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Andrea Cavallini, Fabio Ciani, Stefano Serra, GianCarlo Montanari
-
Publication number: 20120290229Abstract: A diagnostic method and apparatus for assessing the insulation condition of electrical equipment (3) insulated with oil (2). The method comprises the following steps: measuring the concentration of at least one gas dissolved in the insulating oil (2) of the electrical equipment (3); deriving at least one concentration parameter correlated with the gas concentration measured in a predetermined acquisition time interval; measuring electrical pulses relating to partial electrical discharges which occur in the electrical equipment (3) and which generate said pulses; deriving at least one discharge parameter correlated with the partial discharges measured substantially concurrently with the predetermined acquisition time interval; deriving a diagnostic indication about the insulation condition of the electrical equipment (3) as a function of the derived values of the concentration and discharge parameters.Type: ApplicationFiled: January 10, 2011Publication date: November 15, 2012Applicant: TECHIMP TECHNOLOGIES, S.R.L.Inventors: Andrea Cavallini, Fabio Ciani, Stefano Serra, Gian Carlo Montanari
-
Publication number: 20120215469Abstract: An instrument (1) for measuring the loss factor of an electrical apparatus (2) having an axially extending elongate geometry, in particular a medium voltage cable, comprises: at least a first and a second sensor (3A, 3B) connectable to the apparatus (2) in a first and a second measuring section (4A, 4B) axially spaced along the apparatus (2) by a predetermined quantity, respectively, and designed to measure respective values of the magnetic field generated outside the apparatus (2) by a load current flowing axially through the apparatus; a processing unit (5) designed to receive the magnetic field values measured by the sensors (3A, 3B) and programmed to derive from them a load loss value as a function of the difference between the measured magnetic field values.Type: ApplicationFiled: October 27, 2010Publication date: August 23, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Gian Carlo Montanari
-
Publication number: 20120022810Abstract: A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps: (11) of detecting the pulses (4) picked up by a first and a second sensor (5, 7), connected to the apparatus (3) and spaced out along the same; (15) of deriving shape, phase and amplitude parameters for each of the signals detected; (17) of separating the sets of signals detected in each sensor into respective subsets which are uniform in terms of pulse waveform; (18) of identifying the subsets of signals relating to partial discharges and classifying them; (19) of correlating the subsets relating to different sensors and similarly classified, in order to derive a pair of subsets of signals relating to the same discharge site (2); (12) of selecting, for the pair of correlated subsets, at least one pair of homologous pulses (4) detType: ApplicationFiled: March 24, 2010Publication date: January 26, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Andrea Cavallini, Gian Carlo Montanari, Gaetano Pasini
-
Publication number: 20120022809Abstract: A method for locating partial discharges occurring at a discharge site (2) in an electric apparatus (3) with elongate geometry and generating corresponding electric pulses (4) propagating in opposite directions along the apparatus (3) from the discharge site (2) comprises the steps of detecting (11) the electric pulses (4) picked up by a first and a second sensor (5, 7), operatively connected to the apparatus (3) and spaced out along it, and generating corresponding electric signals representative of the waveform of the pulses (4), selecting (12) at least one pair of signals, detected in the consecutive sensors (5, 7), and representative of a pair of homologous pulses (4), relating to the same partial discharge and propagating in opposite directions along the apparatus, deriving, for the signals of the selected pair of homologous pulses (4), at least one attenuation parameter, correlated with a quantity that is variable depending on the distance travelled by the pulses (4), calculating (13) the distance betweType: ApplicationFiled: March 18, 2010Publication date: January 26, 2012Applicant: TECHIMP TECHNOLOGIES S.R.L.Inventors: Stefano Serra, Andrea Cavallini, Gian Carlo Montanari, Gaetano Pasini
-
Patent number: 7816566Abstract: The invention concerns a 3-alkylated crystallized (1R,4S)-p-menthan-(3)-ol derivative, of formula A or B, wherein: either when R<2> represents hydrogen or a methyl radical, R<1> represents a —(CH2)n-OH where n can be 1, 2 and 3, or when R<2> represents a hydroxy radical, R<1> represents a methyl radical or a —(CH2)n-OH group where n can be 1, 2 and 3. The invention also concerns methods for preparing same, and perfume, cosmetic or food compositions containing said derivative.Type: GrantFiled: April 28, 2005Date of Patent: October 19, 2010Assignee: Robertet S.A.Inventors: Daniel Joulain, Claudio Fuganti, Stefano Serra, Andrea Vecchione
-
Publication number: 20090163733Abstract: The invention concerns a 3-alkylated crystallized (1R,4S)-p-menthan-(3)-ol derivative, of formula A or B, wherein: either when R<2> represents hydrogen or a methyl radical, R<1> represents a —(CH2)n-OH where n can be 1, 2 and 3, or when R<2> represents a hydroxy radical, R<1> represents a methyl radical or a —(CH2)n-OH group where n can be 1, 2 and 3. The invention also concerns methods for preparing same, and perfume, cosmetic or food compositions containing said derivative.Type: ApplicationFiled: April 28, 2005Publication date: June 25, 2009Inventors: Daniel Joulain, Claudio Fuganti, Stefano Serra, Andrea Vecchione
-
Publication number: 20080242242Abstract: A receiver front-end for use in a transceiver station of a wireless communication network. The transceiver station is associated with an antenna assembly having a primary and at least a secondary antenna. The receiver front-end is adapted for insertion between the antenna assembly and signal processing sections of the transceiver station. The receiver front-end includes a primary and at least a secondary receiving branch, the primary receiving branch being adapted for coupling to the primary antenna and to the signal processing sections of the transceiver station, the secondary receiving branch being adapted for coupling to the secondary antenna and to the signal processing sections. The primary receiving branch has nonsuperconducting components, including at least a non superconducting filter while the secondary receiving branch has at least a superconducting component.Type: ApplicationFiled: July 4, 2003Publication date: October 2, 2008Inventors: Renata Mele, Fabrizio Ricci, Stefano Serra
-
Patent number: 7412879Abstract: A method for monitoring deformations in a tire of a vehicle wheel, the wheel including the tire and a rim, the method including: providing the wheel with at least two magnetic-field emitters mutually disposed so as to yield a composite magnetic field having one or more space portions where at least one component of the composite magnetic field is substantially null; disposing at least one main magnetic-field sensor substantially in one of the one or more space portions; monitoring variation of the at least one component of the composite magnetic field; and correlating the variation with tire deformations. At least one of the magnetic-field emitters is disposed in contact with the tire. A system for monitoring deformations in a tire of a vehicle wheel includes the wheel, the at least two magnetic-field emitters, and the at least one main magnetic-field sensor.Type: GrantFiled: September 19, 2003Date of Patent: August 19, 2008Assignee: Pirelli Pneumatici S.p.A.Inventors: Stefano Serra, Antonio Carrus, Chiara Cipriani, Enrico Albizzati, Renato Caretta
-
Patent number: 7273937Abstract: Tazarotene is prepared by deoxygenation of the corresponding S-oxide, in turn obtained according to two alternative synthetic pathways.Type: GrantFiled: March 7, 2006Date of Patent: September 25, 2007Assignee: Solmag S.p.A.Inventors: Samuele Frigoli, Claudio Fuganti, Stefano Serra, Francesco Pizzocaro, Angelo Bedeschi, Paolo Tubertini
-
Publication number: 20070151334Abstract: A method for monitoring deformations in a tyre of a vehicle wheel, the wheel including the tyre and a rim, the method including: providing the wheel with at least two magnetic-field emitters mutually disposed so as to yield a composite magnetic field having one or more space portions where at least one component of the composite magnetic field is substantially null; disposing at least one main magnetic-field sensor substantially in one of the one or more space portions; monitoring variation of the at least one component of the composite magnetic field; and correlating the variation with tyre deformations. At least one of the magnetic-field emitters is disposed in contact with the tyre. A system for monitoring deformations in a tyre of a vehicle wheel includes the wheel, the at least two magnetic-field emitters, and the at least one main magnetic-field sensor.Type: ApplicationFiled: September 19, 2003Publication date: July 5, 2007Inventors: Stefano Serra, Antonio Carrus, Chiara Cipriani, Enrico Albizzati, Renato Caretta
-
Publication number: 20060205950Abstract: Tazarotene is prepared by deoxygenation of the corresponding S-oxide, in turn obtained according to two alternative synthetic pathways.Type: ApplicationFiled: March 7, 2006Publication date: September 14, 2006Applicant: Solmag S.p.A.Inventors: Samuele Frigoli, Claudio Fuganti, Stefano Serra, Francesco Pizzocaro, Angelo Bedeschi, Paolo Tubertini