D'Arrigo
Angelo Maria D'Arrigo, Catania IT
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20080278254 | FREQUENCY MODULATOR - A clock frequency modulator for an oscillator having a digital circuit for the generation of a signal modulating the clock frequency, the digital circuit adapted to obtain, from the signal generated by the oscillator, a first pulse signal having a lower frequency than the clock frequency of the oscillator, a digital counter adapted to count the pulses of the first signal and to produce a digital signal and a digital-to-analog converter adapted to convert the digital signal in the signal for modulating the clock frequency of the oscillator. | 11-13-2008 |
Giuseppe D'Arrigo, Tremestieri Etneo IT
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20100216046 | FUEL CELL FORMED IN A SINGLE LAYER OF MONOCRYSTALLINE SILICON AND FABRICATION PROCESS - 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. Each of the porous and fluid permeable regions communicates with a feed duct of a fuel fluid or of oxygen gas that extends parallel to the etch surface inside the conductive silicon body. | 08-26-2010 |
Giuseppe D'Arrigo, Tremestieri Etneo (catania) IT
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20120122015 | MICRO FUEL CELL SYSTEM AND CORRESPONDING MANUFACTURING METHOD - A micro fuel cell system comprises at least an anode region and a cathode region being realized in a substrate as well as at least an active area for chemical reactions and an ionic exchange membrane for separating the active area. The anode and cathode regions, the active area and the ionic exchange membrane are realized on a same planar surface being made by the substrate in order to form a single multifunctional bipolar plate. | 05-17-2012 |
Giuseppe Alessio Maria D'Arrigo, Catania IT
Patent application number | Description | Published |
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20100013057 | SEMICONDUCTOR SUBSTRATE SUITABLE FOR THE REALISATION OF ELECTRONIC AND/OR OPTOELECTRONIC DEVICES AND RELATIVE MANUFACTURING PROCESS - A semiconductive substrate ( | 01-21-2010 |
20120133027 | Semiconductor substrate suitable for the realisation of electronic and/or optoelectronic devices and relative manufacturing process - A semiconductive substrate that is suitable for realising electronic and/or optoelectronic devices that include at least one substrate, in particular of single crystal silicon, and an overlying layer of single crystal silicon. Advantageously, the semiconductive substrate comprises at least one functional coupling layer suitable for reducing the defects linked to the differences in the materials used. The functional coupling layer can comprise a corrugated portion made in the layer of single crystal silicon and suitable for reducing the defects linked to the differences in lattice constant of such materials used. Alternatively, the functional coupling layer can comprise a porous layer arranged between the substrate of single crystal silicon and the layer of single crystal silicon, and suitable for reducing the stress caused by the differences between the thermal expansion coefficients of the materials used. A manufacturing process of such a semiconductive substrate is also described. | 05-31-2012 |
Guiseppe Alessio Maria D'Arrigo, Catania IT
Patent application number | Description | Published |
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20150031193 | Semiconductor substrate suitable for the realization of electronic and/or optoelectronic devices and relative manufacturing process - A semiconductive substrate ( | 01-29-2015 |