Patents by Inventor Alessandro Ferretti

Alessandro Ferretti 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).

  • Publication number: 20230328979
    Abstract: A non-volatile memory cell includes a first well of a first conductivity type and a second well of a second conductivity type in a body adjacent to each other; a first conduction region, a second conduction region and a third conduction region in the first well, the first, second and third conduction regions being of the second conductivity type; a control gate region, of the first or second conductivity type, in the second well; a selection gate over the first well forming, together with the first and second conduction regions, a selection transistor; and a floating gate region. The floating gate region has a programming portion overlying the first well and a capacitive portion overlying the second well. The floating gate region forms, together with the second and third conduction regions, a storage transistor and, together with the control gate region, a capacitive element.
    Type: Application
    Filed: March 17, 2023
    Publication date: October 12, 2023
    Inventors: Roberto Bregoli, Alessandro Ferretti, Federica Rosa
  • Patent number: 8711029
    Abstract: A process for filtering interferograms obtained from SAR images, acquired on the same area by synthetic aperture radars, comprising the following steps: a) acquiring a series of N radar images (Al . . . AN) by means of a SAR sensor on a same area with acquisition geometries such as to allow re-sampling of the data on a common grid; b) after re-sampling on a common grid, selecting a pixel from the common grid; c) calculating the coherence matrix of the selected pixel, that is estimating the complex coherence values for each possible pair of available images; d) maximizing, with respect of the source vector ?, here an unknown element, the functional: (formula) being R the operator which extracts the real part of a complex number, ?nm the modulus of the element (n,m) of the coherence matrix, k a positive real number, ?nm the phase of the element (n,m) of the coherence matrix, ?n and ?m the elements n and m of the unknown vector ?.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: April 29, 2014
    Assignees: Tele-Rilevamento Europa- T.R.E. S.R.L., Politecnico di Milano
    Inventors: Alessandro Ferretti, Alfio Fumagalli, Fabrizio Novali, Francesco De Zan, Alessio Rucci, Stefano Tebaldini
  • Patent number: 8587471
    Abstract: A process includes acquiring radar images on the same area, calculating a vector of n amplitude or intensity values relating to a sample pixel in the n images available, identifying the vector as a sample vector, and defining an estimation window for the sample pixel for identifying a set of pixels around the sample pixel. Additionally, calculating vectors of N amplitude or intensity values for each pixel contained in the estimation window, comparing each vector with the sample vector, identifying pixels associated with the vectors that have passed a statistical test and identifying pixels associated with the vectors that have not passed the statistical test, eliminating the pixels contained in the estimation window that are not connected to the sample pixel, and identifying the set of pixels that are statistically homogeneous with the sample pixel.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: November 19, 2013
    Assignee: Tele-Rilevamento Europa—T.R.E. s.r.l.
    Inventors: Alessandro Ferretti, Roberto Locatelli
  • Publication number: 20120019410
    Abstract: A process for filtering interferograms obtained from SAR images, acquired on the same area by synthetic aperture radars, comprising the following steps: a) acquiring a series of N radar images (Al . . . AN) by means of a SAR sensor on a same area with acquisition geometries such as to allow re-sampling of the data on a common grid; b) after re-sampling on a common grid, selecting a pixel from the common grid; c) calculating the coherence matrix of the selected pixel, that is estimating the complex coherence values for each possible pair of available images; d) maximizing, with respect of the source vector ?, here an unknown element, the functional: (formula) being R the operator which extracts the real part of a complex number, ?nm the modulus of the element (n,m) of the coherence matrix, k a positive real number, ?nm the phase of the element (n,m) of the coherence matrix, ?n and ?m the elements n and m of the unknown vector ?.
    Type: Application
    Filed: July 2, 2010
    Publication date: January 26, 2012
    Applicants: POLITECNICO DI MILANO, TELERILEVAMENTO EUROPA - T.R.E. S.R.L.
    Inventors: Alessandro Ferretti, Alfio Fumagalli, Fabrizio Novali, Francesco De Zan, Alessio Rucci, Stefano Tebaldini
  • Publication number: 20120013501
    Abstract: A process is disclosed for identifying statistically homogeneous pixels in images acquired on the same area by means of a synthetic aperture radar (SAR sensor) comprising the following steps: (a) acquiring a plurality of N radar images (A1 . . .
    Type: Application
    Filed: March 26, 2010
    Publication date: January 19, 2012
    Inventors: Alessandro Ferretti, Roberto Locatelli
  • Patent number: 6583751
    Abstract: Process for radar measurements of movements of city areas and landsliding zones, characterised in that permanent scatterers are identified through the analysis of N−1 differential interferograms with respect to the same image (master), using a reference digital elevation model (DEM) with vertical precision better that 50 meters. For every pixel of the image selected on the satistical properties of the modulus of the reflectivity, a temporal series of the interferometric phases is generated. Then, differences among temporal series that belong to neighboring pixels are formed (differential temporal series). For every differential temporal series, the linear phase components are calculated in relation to the baseline and the phase components connected to the displacement model, already known, in relation to the time.
    Type: Grant
    Filed: November 20, 2001
    Date of Patent: June 24, 2003
    Assignee: Politecnico di Milano
    Inventors: Alessandro Ferretti, Claudio Prati, Fabio Rocca
  • Patent number: 6431256
    Abstract: A cooling roll having superficial dimples, for continuous casting machines with a pair of counterotating rolls in contact with the cast metal is characterized by the fact that it presents the surface that comes to contact with the cast metal provided with a first and a second dimensional order of cavities (6,7) randomly spaced, and optionally, at least partially in contact between them; the strickle impressed on the roll surface (1) of each cavity (6,7) of at least one of said first and second dimensional order being of polygonal or circular shape and, more preferably rhomboidal.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: August 13, 2002
    Assignees: Acciai Speciali Terni S.P.A., Voest-Alpine Industrieanlagenbau
    Inventors: Alessandro Ferretti, Pietro Tolve, Romeo Capotosti, Gerald Hohenbichler
  • Patent number: 4671433
    Abstract: A submerged continuous casting nozzle consists of a tubular element having an axial passage terminating in an end part having terminal conduits extending laterally and downwardly from the vertical axis of the nozzle. The lower end of each of these terminal discharge conduits has a lip protruding toward the axis of the associated conduit, this lip having a height between 0.3 and 0.6 times the diameter of the outflow port. The lip makes an angle of about 90.degree. with the axis of the associated terminal conduit.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: June 9, 1987
    Assignees: Centro Sperimentale Metallurgico SpA, Terni-Societa per l'Industria e l'Elettricita SpA
    Inventors: Maurizio Podrini, Alessandro Ferretti, Giancarlo Di Schino