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Duperray

David Duperray, Redwood City, CA US

Patent application numberDescriptionPublished
20080233893Wireless Tranceiver Configuration with Self-Calibration for Improved Out of Band Interferer Rejection - The present wireless transceiver includes a tuneable narrow band LNA which rejects dramatically any out of band interferers. The tuneable narrow band LNA may be operable over a wide frequency band. A loopback calibration procedure is used to control the tuneable narrow band LNA so as to produce a substantially flat gain characteristic over the band of interest.09-25-2008

David Benoit Didier Duperray, Redwood City, CA US

Patent application numberDescriptionPublished
20110116567MULTIPLE TRANSMISSION APPARATUS WITH REDUCED COUPLING - The present invention relates to a transmission apparatus having at least two transmission branches for transmitting respective transmission signals at substantially same frequencies, and to a method of controlling such a transmission apparatus. A first oscillator circuit (05-19-2011

David L. Duperray, Austin, TX US

Patent application numberDescriptionPublished
20100264994TURNABLE LC OCILLATOR WITH COMMON MODE VOLTAGE ADJUSTMENT - An LC oscillator is provided that achieves improved phase noise performance. A variable frequency oscillator includes a variable supply source (I), an oscillator tank circuit (T), a variable capacitance circuit (VC10-21-2010

Pascal Duperray, Montigny Le Bretonneux FR

Patent application numberDescriptionPublished
20090130615Method for Calcination of a Material with Low NOchi Emissions - The invention relates to a method for calcination of a material in which said material is heated by contact with a heat source essentially generated by means of a flame produced with at least one flow of fuel and primary air and a flow of secondary air, the flame comprising a first combustion zone with a temperature below 1500° C. and a second combustion zone with a temperature above 1500° C., where at least one flow of at least one inert gas is injected into the flame at the beginning of the second combustion zone and/or at least one flow of oxygen or a gas enriched in oxygen is injected into the second combustion zone.05-21-2009
20100257899Oven and Oxy-Combustible Method for Melting Vitrifiable Materials - The invention relates to a method for melting vitrifiable materials in a low-capacity oven, wherein at least part of the melting energy is supplied by two oxy-burners projecting into the melting chamber through the upstream wall and arranged on opposite sides of a vertical plane in which a longitudinal axis of the melting chamber is situated, in such a way as to create two flames, the respective injection axes thereof crossing at a distance from the upstream wall, between ⅓ and ¾ of the length L of the melting chamber.10-14-2010

Patent applications by Pascal Duperray, Montigny Le Bretonneux FR

Philippe Duperray, Chateauroux FR

Patent application numberDescriptionPublished
20100043355INTEGRATED SECONDARY AND TERTIARY PACKAGING MACHINE - An apparatus for packaging articles, which apparatus comprises a first packaging mechanism (02-25-2010
20100072027ARTICLE METERING APPARATUS - A machine for forming a stream of articles (A) into spaced groups of articles, which machine has a working reach and a metering element (03-25-2010