Patents by Inventor Stephane Brandes
Stephane Brandes 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: 8247392Abstract: Compounds of formula (I) are disclosed. The tetrapyrole ring in formula (I) can be substituted with a metal cation (M); R1, R2, R3 and R4 separately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals; R5, R6, R7 and R8 separately represent a hydrogen atom or a C1-4 alkyl radical; Ra, Rb and Rc separately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical optionally substituted by a halogen, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals, wherein at least one of Ra, Rb, and Rc is a phenyl radical. Compounds of formula (I) bound to a silica, a sol-gel material or a mesoporous silica are useful for selective trapping of carbon monoxide.Type: GrantFiled: July 19, 2002Date of Patent: August 21, 2012Assignee: Centre National de la Recherche Scientifique (C.N.R.S.)Inventors: François Jerome, Géraud Dubois, Stéphane Brandes, Gabriel Canard, Jean-Michel Barbe, Roger Guilard, Bruno Roux-Fouillet, Henry Ledon
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Patent number: 7901948Abstract: The invention relates to the use of molecular tweezers as sensitive materials in chemical sensors intended to detect or assay organic compounds in the vapour state, and in particular nitro compounds. These molecular tweezers correspond to the general formula (I): in which: MC1 and MC2 represent macrocycles; p and q are equal to 0 or 1; X and Y are optionally substituted C1 to C10 alkylene groups; while E represents an optionally substituted cyclic or heterocyclic spacer group; and in which MC1 and MC2 are positioned facing each other. Fields of application: detection of explosives, control and monitoring of atmospheric pollution and of the quality of ambient air in relatively confined spaces, and monitoring of industrial sites.Type: GrantFiled: February 1, 2006Date of Patent: March 8, 2011Assignee: Commissariat A l'Energie AtomiqueInventors: Lionel Hairault, Pierre Montmeat, Eric Pasquinet, Jean-Michel Barbe, Stéphane Brandes, Franck Denat, Claude Gros, Roger Guilard
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Patent number: 7517512Abstract: The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality comprising hydrolysis and condensation polymerization of a compound of formula (I): Z-R1—Si(OR)(OR?)(OR?), with an alkaline or alkaline-earth silicate in a mol ratio of (I)/(silicate)=1:9, in the presence of a non-ionic surfactant, to form a mesoporous silica represented by Z-R1—SiO1.5 9 SiO2, whereon is then anchored an organic compound, represented by (?)N—H, comprising a —NH— group capable of reacting with Z, to form a functionalized mesoporous silica represented by (?)N—R—SiO1.5 9 SiO2, which is optionally complexed with a metallic cation to form an organometallic complex. The invention also concerns the use of these materials to separate gases.Type: GrantFiled: March 6, 2008Date of Patent: April 14, 2009Assignee: Centre National de la Recherche-ScientifiqueInventors: Robert Corriu, Ahmad Mehdi, Catherine Reye, Henry Ledon, Roger Guilard, Stéphane Brandes, Chloé Thieuleux
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Patent number: 7452845Abstract: The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality comprising hydrolysis and condensation polymerization of a compound of formula (I): Z-R1—Si(OR)(OR?)(OR?), with an alkaline or alkaline-earth silicate in a mol ratio of (I)/(silicate)=1:9, in the presence of a non-ionic surfactant, to form a mesoporous silica represented by Z-R1—SiO1.5 9 SiO2, whereon is then anchored an organic compound, represented by (?)N—H, comprising a —NH— group capable of reacting with Z, to form a functionalized mesoporous silica represented by (?)N—R—SiO1.5 9 SiO2, which is optionally complexed with a metallic cation to form an organometallic complex. The invention also concerns the use of these materials to separate gases.Type: GrantFiled: March 21, 2002Date of Patent: November 18, 2008Assignee: Centre National de la Recherche ScientifiqueInventors: Robert Corriu, Ahmad Mehdi, Catherine Reye, Henry Ledon, Roger Guilard, Stéphane Brandes, Chloé Thieuleux
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Publication number: 20080153168Abstract: The invention relates to the use of molecular tweezers as sensitive materials in chemical sensors intended to detect or assay organic compounds in the vapour state, and in particular nitro compounds. These molecular tweezers correspond to the general formula (I): in which: MC1 and MC2 represent macrocycles; p and q are equal to 0 or 1; X and Y are optionally substituted C1 to C10 alkylene groups; while E represents an optionally substituted cyclic or heterocyclic spacer group; and in which MC1 and MC2 are positioned facing each other. Fields of application: detection of explosives, control and monitoring of atmospheric pollution and of the quality of ambient air in relatively confined spaces, and monitoring of industrial sites.Type: ApplicationFiled: February 1, 2006Publication date: June 26, 2008Applicant: Commissariat a L'Energie AtomiqueInventors: Lionel Hairault, Pierre Montmeat, Eric Pasquinet, Jean-Michel Barbe, Stephane Brandes, Franck Denat, Claude Gros, Roger Guilard
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Publication number: 20080152561Abstract: The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality comprising hydrolysis and condensation polymerization of a compound of formula (I): Z-R1—Si(OR)(OR?)(OR?), with an alkaline or alkaline-earth silicate in a mol ratio of (I)/(silicate)=1:9, in the presence of a non-ionic surfactant, to form a mesoporous silica represented by Z-R1—SiO1.5 9 SiO2, whereon is then anchored an organic compound, represented by (?)N—H, comprising a —NH— group capable of reacting with Z, to form a functionalized mesoporous silica represented by (?)N—R—SiO1.5 9 SiO2, which is optionally complexed with a metallic cation to form an organometallic complex. The invention also concerns the use of these materials to separate gases.Type: ApplicationFiled: March 6, 2008Publication date: June 26, 2008Applicant: Centre National De La Recherche-ScientifiqueInventors: Robert Corriu, Ahmad Mehdi, Catherine Reye, Henry Ledon, Roger Guilard, Stephane Brandes, Chloe Thieuleux
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Publication number: 20060287195Abstract: The invention concerns compounds of formula (I), wherein: R1, R2, R3 and R4 represent a hydrogen atom, an alkyl radical comprising 1 to 4 carbon atoms, a phenyl radical optionally substituted by one or several groups selected among vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy radicals, alkyl or alkyloxy radicals comprising 1 to 4 carbon atoms optionally substituted by one or several bromo, chloro, fluoro or iodo groups; R5, R6, R7 and R8 represent a hydrogen atom or an alkyl radical comprising 1 to 4 carbon atoms; Ra, Rb, and Rc represent a hydrogen atom, a phenyl radical optionally substituted by one or several groups selected among the vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy radicals, alkyl or alkyloxy radicals comprising 1 to 4 carbon atoms, optionally substituted by one or several bromo, chloro, fluoro or iodo groups.Type: ApplicationFiled: July 19, 2002Publication date: December 21, 2006Inventors: Francois Jerome, Geraud Dubois, Stephane Brandes, Gabriel Canard, Roger Bretigny, Bruno Roux-Fouillet, Henry Ledon
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Publication number: 20040122250Abstract: The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality, comprising hydrolysis and condensation polymerisation of at least a compound of formula (I): Z—R1—Si(OR)(OR′)(OR″), wherein: Z represents either an atom selected among chlorine, bromine or iodine atoms, or an amino or phosphino group; R, R′ and R″, independently of one another, represent an alkyl radical comprising on to four carbon atoms; R1 represents a divalent radical derived from an aliphatic hydrocarbon chain comprising 1 to 30 carbon atoms, wherein are optionally interspersed one or several arylene; —O—, —S—, —O—C(═O), —N(R6)—C(═O)— or N(R6), with at least an alkaline or alkaline-earth silicate of (II) in a mol ratio (I)/(II)=1/9 in the presence of at least a non-ionic surfactant in micellar concentration, to form a mesoporous silica represented by formula (III): Z—R1&Type: ApplicationFiled: January 23, 2004Publication date: June 24, 2004Inventors: Robert Corriu, Ahmad Mehdi, Catherine Reye, Roger Guillard, Stephane Brandes
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Patent number: 6524372Abstract: A novel compound which can be used in the field of separation and purification of gases is disclosed. The compound can be incorporated into a silica gel incorporating polyazacycloalkane structural units for separating a predetermined gas from a mixture of gases. The mixture of gases is brought into contact with a metallated hybrid gel under conditions which make possible the absorption of the gas to be separated, followed by a phase of desorption of the attached gas, and the recovery of the gas.Type: GrantFiled: July 25, 2000Date of Patent: February 25, 2003Assignee: L′Air Liquide, Societe Anonyme a Directoire et Conseil de Surveillance pour l′Etude et l′Exploitation des Procedes Georges ClaudeInventors: Robert Corriu, Catherine Reye, Ahmad Mehdi, Gérard Dubois, Claude Chuit, Franck Denat, Bruno Roux-Fouillet, Roger Guilard, Gilles Lagrange, Stéphane Brandes