Patents by Inventor Stephane Raffy
Stephane Raffy 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: 9056796Abstract: Fused grain having the following chemical composition: more than 10% and less than 50% of alumina Al2O3; more than 10% and less than 50% of titanium oxide TiO2; more than 21% and less than 50% of zirconia; more than 1% and less than 10% of a compound chosen from the group constituted by MgO, CaO, Fe2O3, Cr2O3, MnO2, La2O3, Y2O3, Ga2O3 and mixtures thereof; less than 20% of silica SiO2; less than 10% of a compound chosen from the group constituted by alkali metal oxides, alkaline-earth metal oxides and mixtures thereof; less than 2% of other oxide species; the percentages being percentages by weight on the basis of the oxides. Application in the melting of metals.Type: GrantFiled: March 27, 2012Date of Patent: June 16, 2015Assignee: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventor: Stephane Raffy
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Publication number: 20140011660Abstract: Fused grain having the following chemical composition: more than 10% and less than 50% of alumina Al2O3; more than 10% and less than 50% of titanium oxide TiO2; more than 21% and less than 50% of zirconia; more than 1% and less than 10% of a compound chosen from the group constituted by MgO, CaO, Fe2O3, Cr2O3, MnO2, La2O3, Y2O3, Ga2O3 and mixtures thereof; less than 20% of silica SiO2; less than 10% of a compound chosen from the group constituted by alkali metal oxides, alkaline-earth metal oxides and mixtures thereof; less than 2% of other oxide species; the percentages being percentages by weight on the basis of the oxides. Application in the melting of metals.Type: ApplicationFiled: March 27, 2012Publication date: January 9, 2014Applicant: Saint-Gobain Centre De Recherches Et D'Etudes EuropeenInventor: Stephane Raffy
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Patent number: 8586494Abstract: The invention relates to a mixture of fused grains having the following chemical composition, in weight percentages on the basis of the oxides: less than 55% of Al2O3; more than 35% and less than 80% of TiO2; more than 1% and less than 20% of MgO; more than 0.7% and less than 20% of ZrO2; and less than 20% of SiO2, said fused grains also corresponding to the following composition, in molar percentages, on the basis of the single oxides Al2O3, TiO2, MgO, ZrO2: 90<2a+3m<110, 100+a<3t<210?a with a+t+m+zr=100, in which: a is the molar percentage of Al2O3; t is the molar percentage of TiO2; m is the molar percentage of MgO; and zr is the molar percentage of ZrO2. The invention also relates to a ceramic product obtained from such fused grains.Type: GrantFiled: July 2, 2009Date of Patent: November 19, 2013Assignee: Saint-Gobain Centre de Recherches et d'Etudes EuropeenInventor: Stephane Raffy
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Patent number: 8557012Abstract: Fused particles having the following chemical composition, as a percentage by weight on the basis of the oxides: more than 15% but less than 55% of Al2O3; more than 25% but less than 60% of TiO2; less than 20%, in total, of at least one oxide of an element M1, chosen from MgO and CoO; more than 0.7% but less than 20%, in total, of at least one oxide of an element M2, chosen from the group formed by Fe2O3, Cr2O3, MnO2, La2O3, Y2O3 and Ga2O3; less than 20%, in total, of at least one oxide of an element M3, chosen from the group formed by ZrO2, Ce2O3 and HfO2; and less than 30% of SiO2. Ceramic product or material obtained by sintering said particles.Type: GrantFiled: July 27, 2010Date of Patent: October 15, 2013Assignee: Saint-Gobain Centre de Recherches Et d'Etudes EuropeenInventor: Stephane Raffy
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Patent number: 8557010Abstract: Fused particles containing, by weight percent: more than 15% but less than 55% of Al2O3; more than 20% but less than 45% of TiO2; more than 3% but less than 30% of SiO2; less than 20%, in total, of at least one oxide selected from the group consisting of ZrO2, Ce2O3, and HfO2; less than 1% of MgO; and more than 1% but less than 15%, in total, of at least one selected from the group consisting of CaO, Na2O, K2O, SrO, B2O3, and BaO. Also, a ceramic product or material obtained by sintering the fused particles.Type: GrantFiled: June 25, 2010Date of Patent: October 15, 2013Assignee: Saint-Gobain Centre de Recherches et d'Etudes EuropeenInventor: Stephane Raffy
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Patent number: 8551910Abstract: The invention relates to a porous structure comprising a ceramic material comprising mainly or consisting of an oxide material of the pseudobrookite type comprising titanium, aluminum, magnesium and zirconium in proportions such that the phase of the pseudobrookite type substantially satisfies the formula: (Al2TiO5)x(MgTi2O5)y(MgTiZrO5)z. This material satisfies the following composition, in mol % on the basis of just the oxides Al2O3, TiO2, MgO and ZrO2: 90<2a+3m<110; 100+a<3t<210?a; and a+t+m+zr=100, in which: a is the molar content of Al2O3; t is the molar content of TiO2; m is the molar content of MgO; and zr is the molar content of ZrO2.Type: GrantFiled: July 2, 2009Date of Patent: October 8, 2013Assignee: Saint-Gobain Centre de Recherches et d'Etudes EuropeenInventors: Stephane Raffy, Philippe Auroy
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Publication number: 20120276325Abstract: Porous structure comprising an oxide ceramic material comprising, on the basis of the corresponding simple oxides: Al2O3, TiO2, at least one oxide of an element M2 chosen from the group formed by Fe2O3, Cr2O3, MnO2, La2O3, Y2O3 and Ga2O3, at least one oxide of an element M3 chosen from the group formed by ZrO2, Ce2O3 and HfO2, optionally at least one oxide of an element M1 chosen from MgO and CoO, and optionally SiO2, said material being obtained by the reactive sintering of the corresponding simple oxides or of their precursors or by heat treatment of the sintered particles satisfying said composition.Type: ApplicationFiled: September 21, 2010Publication date: November 1, 2012Applicant: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventors: Stephane Raffy, Nabil Nahas
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Publication number: 20120171412Abstract: A porous structure comprising a ceramic material, mainly formed by or consisting of an oxide material comprising titanium, aluminum, zirconium and silicium satisfying the following composition, in wt % on the basis of the oxides: more than 15% but less than 55% Al2O3; more than 20% but less than 45% TiO2; more than 1% but less than 30% SiO2; more than 0.7% but less than 20%, in total, of at least one oxide chosen from ZrO2, Ce2O3 and HfO2; less than 1% MgO; said composition furthermore comprising other elements chosen, on the basis of oxides, from CaO, Na2O, K2O, SrO, B2O3 and BaO, the total summed amount of said oxides being less than 15% but greater than 1%; and said material being obtained by reactive sintering of said simple oxides or of one of their precursors, or by heat treatment of sintered particles, satisfying said composition.Type: ApplicationFiled: September 21, 2010Publication date: July 5, 2012Applicant: SAINT-GOBAIN CENTRE DE RECHERCHES ET D'ETUDES EUROPEENInventors: Stephane Raffy, Nabil Nahas
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Publication number: 20120124953Abstract: Fused particles having the following chemical composition, as a percentage by weight on the basis of the oxides: more than 15% but less than 55% of Al2O3; more than 25% but less than 60% of TiO2; less than 20%, in total, of at least one oxide of an element M1, chosen from MgO and CoO; more than 0.7% but less than 20%, in total, of at least one oxide of an element M2, chosen from the group formed by Fe2O3, Cr2O3, MnO2, La2O3, Y2O3 and Ga2O3; less than 20%, in total, of at least one oxide of an element M3, chosen from the group formed by ZrO2, Ce2O3 and HfO2; and less than 30% of SiO2. Ceramic product or material obtained by sintering said particles.Type: ApplicationFiled: July 27, 2010Publication date: May 24, 2012Applicant: SAINT-GOBAIN CENTRE DE RECH. ET D'ETUDES EUROPEENInventor: Stephane Raffy
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Publication number: 20120096822Abstract: Fused particles containing, by weight percent: more than 15% but less than 55% of Al2O3; more than 20% but less than 45% of TiO2; more than 3% but less than 30% of SiO2; less than 20%, in total, of at least one oxide selected from the group consisting of ZrO2, Ce2O3, and HfO2; less than 1% of MgO; and more than 1% but less than 15%, in total, of at least one selected from the group consisting of CaO, Na2O, K2O, SrO, B2O3, and BaO. Also, a ceramic product or material obtained by sintering the fused particles.Type: ApplicationFiled: June 25, 2010Publication date: April 26, 2012Applicant: SAINT-GOBAIN CENTRE DE RECH. ET D'ETUDES EUROPEENInventor: Stephane Raffy
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Publication number: 20110152075Abstract: The invention relates to a porous structure comprising a ceramic material comprising mainly or consisting of an oxide material of the pseudobrookite type comprising titanium, aluminum, magnesium and zirconium in proportions such that the phase of the pseudobrookite type substantially satisfies the formula: (Al2TiO5)x(MgTi2O5)y(MgTiZrO5)z said material satisfying the following composition, in mol % on the basis of just the oxides Al2O3, TiO2, MgO and ZrO2: 90<2a+3m<110; 100+a<3t<210?a; and a+t+m+zr=100, in which: a is the molar content of Al2O3; t is the molar content of TiO2; m is the molar content of MgO; and zr is the molar content of ZrO2.Type: ApplicationFiled: July 2, 2009Publication date: June 23, 2011Applicant: Saint-Gobain Centre de Rech. Et D'Etudes EuropeanInventors: Stephane Raffy, Philippe Auroy
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Publication number: 20110105318Abstract: The invention relates to a mixture of fused grains having the following chemical composition, in weight percentages on the basis of the oxides: less than 55% of Al2O3; more than 35% and less than 80% of TiO2; more than 1% and less than 20% of MgO; more than 0.7% and less than 20% of ZrO2; and less than 20% of SiO2, said fused grains also corresponding to the following composition, in molar percentages, on the basis of the single oxides Al2O3, TiO2, MgO, ZrO2: 90<2a+3m<110, 100+a<3t<210?a with a+t+m+zr=100, in which: a is the molar percentage of Al2O3; t is the molar percentage of TiO2; m is the molar percentage of MgO; and zr is the molar percentage of ZrO2. The invention also relates to a ceramic product obtained from such fused grains.Type: ApplicationFiled: July 2, 2009Publication date: May 5, 2011Applicant: Saint-Gobain Centre De Recherches Et D'etudes Eur.Inventor: Stephane Raffy
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Publication number: 20080032151Abstract: The invention relates to a metal coating for a utensil for cooking food products. The coating consists of an aluminum-based alloy containing more than 80% by weight of one or more quasicrystalline or approximant phases, having the composition Ala(Fe1-xXx)b(Cr1-yYy)cZzJj in which: X represents one or more elements isoelectronic with Fe, chosen from Ru and Os; Y represents one or more elements isoelectronic with Cr, chosen from Mo and W; Z is an element or a mixture of elements chosen from Ti, Zr, Hf, V, Nb, Ta, Mn, Re, Rh, Ni and Pd; J represents the inevitable impurities other than copper; a+b+c+z=100; 5?b?15; 10?c?29; 0?z?10; xb?2; yc?2; and j<1.Type: ApplicationFiled: February 9, 2005Publication date: February 7, 2008Inventors: Stephane Raffy, Jean-Marie Dubois, Valerie Demange, Marie-Cecile De Weerd