Patents by Inventor Henri Chevrel

Henri Chevrel 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).

  • Publication number: 20190368728
    Abstract: A radiative recuperator preheats oxidant and/or fuel for combustion at one or more burners of a furnace. The recuperator includes a duct, at least portions of which comprise a material having a thermal conductivity of greater than 1 W/(m·K), preferably greater than 3 W/(m·K), that receives hot flue gas produced by the burner(s). The duct radiatively transfers heat to oxidant or fuel (for preheating) flowing through one or more metallic pipes disposed in between the duct and an insulating wall.
    Type: Application
    Filed: August 16, 2019
    Publication date: December 5, 2019
    Applicants: American Air Liquide, Inc., L'Air Liquide, Societe Anonyme pour l'Etude et l?Exploitation des Procedes Georges Claude
    Inventors: Taekyu KANG, James J.F. MCANDREW, Remi TSIAVA, Jiefu MA, Ryan ADELMAN, Henri CHEVREL
  • Patent number: 10465904
    Abstract: A radiative recuperator preheats oxidant and/or fuel for combustion at one or more burners of a furnace. The recuperator includes a duct, at least portions of which comprise a material having a thermal conductivity of greater than 1 W/(m·K), preferably greater than 3 W/(m·K), that receives hot flue gas produced by the burner(s). The duct radiatively transfers heat to oxidant or fuel (for preheating) flowing through one or more metallic pipes disposed in between the duct and an insulating wall.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: November 5, 2019
    Assignees: American Air Liquide, Inc., L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Taekyu Kang, James J. F. McAndrew, Remi Tsiava, Jiefu Ma, Ryan Adelman, Henri Chevrel
  • Patent number: 10183258
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: January 22, 2019
    Assignee: L'Air Liquide Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Raja Swaidan, David J. Hasse, Madhava R. Kosuri, Canghai Ma, Robert A. Gagliano, Henri Chevrel
  • Publication number: 20190003706
    Abstract: A radiative recuperator preheats oxidant and/or fuel for combustion at one or more burners of a furnace. The recuperator includes a duct, at least portions of which comprise a material having a thermal conductivity of greater than 1 W/(m·K), preferably greater than 3 W/(m·K), that receives hot flue gas produced by the burner(s). The duct radiatively transfers heat to oxidant or fuel (for preheating) flowing through one or more metallic pipes disposed in between the duct and an insulating wall.
    Type: Application
    Filed: April 6, 2018
    Publication date: January 3, 2019
    Applicants: American Air Liquide, Inc., L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Taekyu KANG, James J.F. MCANDREW, Remi TSIAVA, Jiefu MA, Ryan ADELMAN, Henri CHEVREL
  • Patent number: 10143973
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the bore fluid used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 4, 2018
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Raja Swaidan, David J. Hasse, Madhava R. Kosuri, Canghai Ma, Robert A. Gagliano, Henri Chevrel, Dean W. Kratzer
  • Patent number: 10112149
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 30, 2018
    Assignee: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: Raja Swaidan, David J. Hasse, Madhava R. Kosuri, Canghai Ma, Robert A. Gagliano, Henri Chevrel
  • Publication number: 20180001270
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the bore fluid used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Raja SWAIDAN, David J. HASSE, Madhava R. KOSURI, Canghai MA, Robert A. GAGLIANO, Henri CHEVREL, Dean W. KRATZER
  • Publication number: 20180001269
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Raja SWAIDAN, David J. HASSE, Madhava R. KOSURI, Canghai MA, Robert A. GAGLIANO, Henri CHEVREL
  • Publication number: 20180001271
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Raja SWAIDAN, David J. HASSE, Madhava R. KOSURI, Canghai MA, Robert A. GAGLIANO, Henri CHEVREL
  • Publication number: 20180001272
    Abstract: Metallopolyimide precursor fibers for aging-resistant carbon molecular sieve hollow fiber membranes having enhanced selectivity include transition metal cations complexed with electronegative regions of a polyimide. CMS membranes are made by pyrolyzing the metallopolyimide precursor fibers. The cations are introduced by including, in the spin dope composition used to extrude the fibers, either a salt of the transition metal and an inorganic anion or a transition metal/organic ligand complex.
    Type: Application
    Filed: June 30, 2016
    Publication date: January 4, 2018
    Inventors: Raja SWAIDAN, David J. HASSE, Madhava R. KOSURI, Canghai MA, Robert A. GAGLIANO, Henri CHEVREL
  • Patent number: 9795927
    Abstract: A carbon molecular sieve (CMS) membrane is made by pyrolyzing a polymeric precursor membrane in a pyrolysis atmosphere containing a sulfur-containing compound.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: October 24, 2017
    Assignee: L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges
    Inventors: Henri Chevrel, Benjamin J. Jurcik, Jr., Philippe A. Coignet, Raja Swaidan, Dean W. Kratzer
  • Publication number: 20160184775
    Abstract: A carbon molecular sieve (CMS) membrane is made by pyrolyzing a polymeric precursor membrane in a pyrolysis atmosphere containing a sulfur-containing compound.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 30, 2016
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Henri CHEVREL, Benjamin J. JURCIK, JR., Philippe A. COIGNET, Raja SWAIDAN, Dean W. KRATZER
  • Publication number: 20160184776
    Abstract: A carbon molecular sieve (CMS) membrane is made by pyrolyzing a polymeric precursor membrane in a pyrolysis atmosphere containing a sulfur-containing compound.
    Type: Application
    Filed: May 29, 2015
    Publication date: June 30, 2016
    Inventors: Henri CHEVREL, Benjamin J. JURCIK, JR.
  • Patent number: 8551438
    Abstract: Method of preparing a compound of formula SinH2n+2 in which n is an integer greater than or equal to 1 and less than or equal to 4, by reaction of at least one silicide or silicon alloy in the form of powder of formula M1xM2ySiz, in which M1 is a reducing metal, M2 an alkali or alkaline-earth metal, x, y and z varying from 0 to 1, z being different from 0 and x+y different from 0, with an aqueous solution comprising CO2, said solution is or is not saturated with CO2 at the temperature and pressure of the reaction.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: October 8, 2013
    Assignee: L'Air Liquide, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
    Inventors: Henri Chevrel, Dominique Belot
  • Publication number: 20110076220
    Abstract: Method of preparing a compound of formula SinH2n+2 in which n is an integer greater than or equal to 1 and less than or equal to 4, by reaction of at least one silicide or silicon alloy in the form of powder of formula M1xM2ySiz, in which M1 is a reducing metal, M2 an alkali or alkaline-earth metal, x, y and z varying from 0 to 1, z being different from 0 and x+y different from 0, with an aqueous solution comprising CO2, said solution is or is not saturated with CO2 at the temperature and pressure of the reaction.
    Type: Application
    Filed: April 21, 2009
    Publication date: March 31, 2011
    Inventors: Henri Chevrel, Dominique Belot
  • Publication number: 20110011129
    Abstract: The invention relates to a method for recycling silane that comprises the following consecutive steps: a) injecting a mixture of pure silane/pure hydrogen (SiH4/H2) in a reaction chamber for making silicon-containing thin layers; b) extracting from the mixture the excess of silane not used during step a)/hydrogen (SiH4/H2) via a pump using a supply gas; c) discharging from said pump, at a pressure close to the atmospheric pressure, a mixture containing at least silane (SiH4), hydrogen (H2) and an amount different from zero of said supply gas; d) separating the silane (SiH4) from the hydrogen/supply gas mixture resulting from the mixture from step c), the silane thus obtained containing less than 100 ppm of supply gas, preferably less than 10 ppm of supply gas and more preferably less than 1 ppm of supply gas; characterised in that at least 50%, preferably 70%, and more preferably 80% of the silane (SiH4) from step b) is reused after step d) for a new step a).
    Type: Application
    Filed: February 18, 2009
    Publication date: January 20, 2011
    Inventors: Pierre Briend, Bruno Alban, Henri Chevrel, Denis Jahan
  • Publication number: 20070124596
    Abstract: The present invention generally describes a system and process for the integration of a gas supply system and a computer network.
    Type: Application
    Filed: January 11, 2007
    Publication date: May 31, 2007
    Inventors: Henri Chevrel, Vinod Raghavan, Kevin McKean, Anthony Hudson
  • Publication number: 20030135500
    Abstract: The present invention generally describes a system and method for the integration of a gas supply system and a computer network which comprises a plurality of disparate computer systems and databases to provide an integrated system that may be searched via a web browser. An interaction manager is provided that is capable of communicating with the web browsers through a web server. The interaction manager comprises a library of compiled system component interface files which permits communication through the underlying computer architecture of each individual computer system and database. The interaction manager utilizes a JavaScript processor to generate JavaScript related to the library of compiled component interface files. Client side JavaScript generates a dynamic screen for the web browser users that may be utilized for interacting server side JavaScript to thereby communicate with the computer systems and databases.
    Type: Application
    Filed: November 25, 2002
    Publication date: July 17, 2003
    Inventors: Henri Chevrel, Vinod Raghavan, Kevin P. McKean, Anthony Hudson
  • Patent number: 5396039
    Abstract: A process to avoid or limit corrosion at the junction of two piping comprising devices welded together, said piping comprising devices being adapted to flow corrosive gases through them, said process comprising the steps of:a) providing a first piping comprising device and connecting it to an inert gas source;b) purging it with an inert gas comprising substantially not more than 10 ppb of an oxidizing gas selected from the group consisting of oxygen, carbon dioxide, water vapor or mixtures thereof, said inert gas flowing from a first opening to a second opening of said piping comprising device;c) providing a second pipe comprising device in flow communication with the first one, while continuing to purge the first piping comprising device;d) welding the two piping comprising devices, said welding being carried out under an inert gas atmosphere; ande) repeating steps c and d if necessary.
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: March 7, 1995
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Henri Chevrel, Taeko Hattori, Hideki Takagi, Eiichi Ozawa, Jean-Marie Friedt
  • Patent number: 5368223
    Abstract: Avoidance of the corrosion initiation sites consisting of Mn particles deposited on the TiG welded inner tube surface is achieved through suppression of emission of manganese fumes by addition of a protective non corrosive metallic layer. The latter melts during the welding and arises in a non-corrosive internal metallic coating of the welded zone.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: November 29, 1994
    Assignee: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Henri Chevrel, Alain Boireau