Patents by Inventor Jean-Michel Tauzia
Jean-Michel Tauzia 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: 9393503Abstract: The main subject of the present invention is a process for processing a paste (5) containing a solid charge (C) with a view to extracting at least one part of said solid charge (C). Said process comprises continuously: mixing, in a mixer (8), said paste (5) with a liquid solvent (3), a solvent for said at least one part of said solid charge (C), with a view to dissolving, at least partially, said at least one part of said solid charge (C) in said solvent (3); recovering, after said mixing, a biphasic system (15) comprising, on the one hand, a solution (3?) enclosing at least one fraction of said at least one part of said solid charge (C), dissolved in said solvent (3), and on the other hand, a solid residue (5?) of said paste (5); and then, separating said solution (3?) and said solid residue (5?) of said paste (5).Type: GrantFiled: September 25, 2012Date of Patent: July 19, 2016Assignee: HERAKLESInventors: Jean-Michel Tauzia, Eric Giraud, Marie Gaudre
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Publication number: 20140235788Abstract: The main subject of the present invention is a process for processing a paste (5) containing a solid charge (C) with a view to extracting at least one part of said solid charge (C). Said process comprises continuously: mixing, in a mixer (8), said paste (5) with a liquid solvent (3), a solvent for said at least one part of said solid charge (C), with a view to dissolving, at least partially, said at least one part of said solid charge (C) in said solvent (3); recovering, after said mixing, a biphasic system (15) comprising, on the one hand, a solution (3?) enclosing at least one fraction of said at least one part of said solid charge (C), dissolved in said solvent (3), and on the other hand, a solid residue (5?) of said paste (5); and then, separating said solution (3?) and said solid residue (5?) of said paste (5).Type: ApplicationFiled: September 25, 2012Publication date: August 21, 2014Applicant: HERAKLESInventors: Jean-Michel Tauzia, Eric Giraud, Marie Gaudre
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Patent number: 7736519Abstract: The invention relates to a method for processing an aqueous effluent (E) containing in solution at least one type of metal (M) nitrite or nitrate whose oxide is stable in an aqueous medium consisting (I) in introducing cations NH4+ in aqueous solution, generally in the form of an aqueous ammonia solution, into the aqueous effluent and, subsequently (II) in processing the obtainable medium at a temperature ranging from 100 to 700° C. and a pressure of 1-50 MPa (i.e. from 10 to 500 bar), thereby converting the metal (M) nitrite or nitrate into metal (M) oxide, nitrogen and water.Type: GrantFiled: June 17, 2005Date of Patent: June 15, 2010Assignee: Centre National de la Recherge Scientifique (C.N.R.S.)Inventors: François Cansell, Marie Gaudre, Jean-Michel Tauzia
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Publication number: 20080190866Abstract: The invention relates to a method for processing an aqueous effluent (E) containing in solution at least one type of metal (M) nitrite or nitrate whose oxide is stable in an aqueous medium consisting (I) in introducing cations NH4+ in aqueous solution, generally in the form of an aqueous ammonia solution, into the aqueous effluent and, subsequently (II) in processing the obtainable medium at a temperature ranging from 100 to 700° C. and a pressure of 1-50 MPa (i.e. from 10 to 500 bar), thereby converting the metal (M) nitrite or nitrate into metal (M) oxide, nitrogen and water.Type: ApplicationFiled: June 17, 2005Publication date: August 14, 2008Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.Inventors: Francois Cansell, Marie Gaudre, Jean-Michel Tauzia
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Patent number: 7249553Abstract: Described is a process and a plant for destroying rocket motors, including in particular the following steps and stations: cutting of the motor into sections; cooling of the sections containing propellant by immersion in a cryogenic liquid; and fragmenting and extraction of the cooled propellant by elastic deformation of the casing of the section. The propellant fragments are recovered for subsequent treatment and the casings are deactivated before being scrapped.Type: GrantFiled: May 28, 2004Date of Patent: July 31, 2007Assignee: SNPE Materiaux EnergetiquesInventors: Marie Gaudre, Eric Marchand, Jean-Michel Tauzia, Jean-Louis Trichard
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Publication number: 20070161844Abstract: Described is a process and a plant for destroying rocket motors, including in particular the following steps and stations: cutting of the motor into sections; cooling of the sections containing propellant by immersion in a cryogenic liquid; and fragmenting and extraction of the cooled propellant by elastic deformation of the casing of the section. The propellant fragments are recovered for subsequent treatment and the casings are deactivated before being scrapped.Type: ApplicationFiled: May 28, 2004Publication date: July 12, 2007Applicant: SNPE Materiaux EnergetiquesInventors: Marie Gaudre, Eric Marchand, Jean-Michel Tauzia, Jean-Louis Trichard
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Patent number: 7073424Abstract: The invention concerns the field of ammunitions equipped with their fuze, found on the battlefield. Such ammunitions represent a major pyrotechnic risk. The problem consists in destroying the fuze so as to be able to dismantle said ammunition. The method consists in placing said ammunition (1) in a closed chamber (5) to carry out at least once the following cycle: depressurizing the chamber (5), dissolving the fuze (2) of the ammunition (1) with a liquid corrosive agent, drawing off the gaseous effluents towards an auxiliary chamber (7), reopening the chamber (5) after dissolving the fuze (2), removing the ammunition (1), recovering the mixture resulting from the attack of the fuze (2) by the liquid corrosive agent (6) and treating it by pyrolysis.Type: GrantFiled: May 17, 2002Date of Patent: July 11, 2006Assignee: SNPE Materiaux EnergetiquesInventors: Marc Ferrari, Marie Gaudre, Jean-Michel Tauzia
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Patent number: 6936120Abstract: A process for casting propellant paste into a mould to manufacture a block of solid propellant includes first mixing two groups of components briefly at low pressure, mixing the two groups of components at high pressure, and casting the mixture in a mould. The first group of components represents about 80% to about 99% of the finished product and essentially comprises a liquid prepolymer, at least one pulverulent solid charge and some of the various additives of the propellant paste. The second group of components represents about 20% to about 1% of the finished product and comprises the crosslinking agent and the rest of the additives.Type: GrantFiled: January 16, 2003Date of Patent: August 30, 2005Assignee: SNPE Materiaux EnergetiquesInventors: Marie Gaudre, Eric-Serge Giraud, Jean-Michel Tauzia
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Publication number: 20050183804Abstract: A process for casting propellant paste into a mould to manufacture a block of solid propellant includes first mixing two groups of components briefly at low pressure, mixing the two groups of components at high pressure, and casting the mixture in a mould. The first group of components represents about 80% to about 99% of the finished product and essentially comprises a liquid prepolymer, at least one pulverulent solid charge and some of the various additives of the propellant paste. The second group of components represents about 20% to about 1% of the finished product and comprises the crosslinking agent and the rest of the additives.Type: ApplicationFiled: January 16, 2003Publication date: August 25, 2005Applicant: SNPEInventors: Marie Gaudre, Eric-Serge Giraud, Jean-Michel Tauzia
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Publication number: 20040107824Abstract: The invention concerns the field of ammunitions equipped with their rockets, found on the battlefield. Such ammunitions represent a major pyrotechnic risk. The problem consists in destroying the rocket so as to be able to dismantle said ammunition. The method consists in placing said ammunition (1) in a closed chamber (5) to carry out at least once the following cycle: depressurizing the chamber (5), dissolving the rocket (2) of the ammunition (1) with a liquid corrosive agent, drawing off the gaseous effluents towards an auxiliary chamber (7), reopening the chamber (5) after dissolving the rocket (2), removing the ammunition (1), recovering the mixture resulting from the attack of the rocket (2) by the liquid corrosive agent (6) and treating it by pyrolysis.Type: ApplicationFiled: September 11, 2003Publication date: June 10, 2004Inventors: Marc Ferrari, Marie Gaudre, Jean-Michel Tauzia
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Patent number: 6569381Abstract: The subject of the invention is a particularly simple and inexpensive process for manufacturing tin/tungsten composite elements having a thickness of between 1 mm and 6 mm, such as spherical shot for hunting cartridges or fishing sinkers, from a tin/tungsten powder blend. The powder blend is extruded, in the solid state, directly into a wire whose thickness is between 1 mm and 6 mm with an extrusion rate≦80 mm/s. Next, the wire is cut into pieces which are then forged to the desired shape, especially into spheres. The subject of the invention is also the aforementioned process for obtaining the wire.Type: GrantFiled: April 19, 2001Date of Patent: May 27, 2003Assignee: SNPEInventors: Alain Le Floc'h, Jean-Michel Tauzia
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Publication number: 20010053331Abstract: The subject of the invention is a particularly simple and inexpensive process for manufacturing tin/tungsten composite elements having a thickness of between 1 mm and 6 mm, such as spherical shot for hunting cartridges or fishing sinkers, from a tin/tungsten powder blend.Type: ApplicationFiled: April 19, 2001Publication date: December 20, 2001Applicant: SNPEInventors: Alain Le Floc'h, Jean-Michel Tauzia
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Patent number: 6328891Abstract: The invention relates to a process for the biological purification of a water containing ammonium perchlorate, characterized in that aqueous ammonium perchlorate solution is placed in contact, in a first, aerobic reactor, with an activated sludge in the presence of at least one source of mineral carbon and nutritional elements for the metabolism of the microorganisms, and then in that the liquid effluent leaving the first reactor is placed in contact, in a second, anoxic reactor, with an activated sludge, in the presence of at least one source of organic carbon and nutritional elements for the metabolism of the microorganisms. The process makes it possible to treat aqueous solutions containing very large amounts of ammonium perchlorate and to convert both the ammonium ions into molecular nitrogen and the perchlorate ions into chloride ions.Type: GrantFiled: December 13, 1999Date of Patent: December 11, 2001Assignee: SNPEInventors: Marie Gaudre-Longerinas, Jean-Michel Tauzia
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Patent number: 5610444Abstract: The invention relates to a process for continuous manufacture of pyrotechnic charges containing a silicone binder and to the compositions capable of being used by this process.The following are introduced continuously into an extruder (1):a mixture A of a crosslinkable silicone resin with a crosslinkable silicone gum,a mixture B of oxidizing fillers,a crosslinking agent C which is common to the resin and to the gum.The dough obtained is extruded in the form of fuse strings (3) which are cut into strands (5) which are returned into a second extruder (7) to be extruded and cut into the form of blocks (11) in which the binder is crosslinked in an oven (13).The charges thus obtained find their preferred application in gas pyrotechnic generators for motor vehicle safety.Type: GrantFiled: December 21, 1995Date of Patent: March 11, 1997Assignee: Societe Nationale des Poudres et ExplosifsInventors: Herv e Austruy, Jean Grignon, Jean-Michel Tauzia
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Patent number: 5310159Abstract: Destructible cores useful particularly for shaping the internal channels of cast propellant blocks. The cores include at least one elongated element which is shaped, for example by winding, the cohesion of which is ensured by way of a joining material and a portion of which is accessible from the exterior of the component to be cast. In order to obtain quickly cores having a high rigidity, the shaped element is a band which includes interlaced wires having free spaces, the joining material filling the free spaces.Type: GrantFiled: July 26, 1991Date of Patent: May 10, 1994Assignee: Societe Nationale des Poudres et ExplosifsInventors: Andre Hiss, Jean-Michel Tauzia
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Patent number: 4638735Abstract: The invention relates to a combustion inhibitor composition intended to cover partly the surface of blocks of double-base propellant. The inhibitor composition of the invention includes an aliphatic polyurethane obtained by the reaction of at least one polyisocyanate with a mixture of at least one polyetherpolyol containing at least three hydroxy groups per molecule and at least one polymer containing two hydroxy groups per molecule. This difunctional polymer is chosen from lactone polymers, such as poly-.epsilon.-caprolactone and polytetrahydrofuran. The inhibitor composition may also contain gasifiable fillers and an aliphatic plasticizer. The composition has good discreteness properties, while retaining excellent mechanical properties. The present invention has particular application in the field of solid weapon propulsion.Type: GrantFiled: May 17, 1985Date of Patent: January 27, 1987Assignee: Societe Nationale des Poudres et ExplosifsInventors: Andre E. Lelu, Jean R. Grignon, Bruno F. Gonthier, Jean-Michel Tauzia
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Patent number: 4536235Abstract: A combustion inhibitor for a double base propellant is described which comprises a polyurethane elastomer having in chemically combined form a compound which is an aliphatic polyester polyol or an aliphatic polyether polyol, or a mixture thereof, which compound contains 2-6 hydroxyl groups per molecule, and an aliphatic polyisocyanate. The inhibitor also contains 0.1-10 parts by weight of mineral fibers or thermostable organic fibers of length between 0.1 mm and 15 mm per 100 parts inhibitor. The inhibitor may contain an organic gasifiable charge and an aliphatic plasticizer.Type: GrantFiled: December 20, 1983Date of Patent: August 20, 1985Assignee: Societe Nationale Des Poudres et ExplosifsInventors: Andre Lelu, Bruno Gonthier, Jean Grignon, Jean-Michel Tauzia