Patents by Inventor David J. Hassee

David J. Hassee 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).

  • METHOD FOR PURIFYING BIOGAS THROUGH MEMBRANES AT NEGATIVE TEMPERATURES
    Publication number: 20220152552
    Abstract: The invention relates to a method for membrane permeation of a gas flow including methane and carbon dioxide, wherein said gas flow is cooled to a temperature of 0° C. to ?60° C. before being fed into a membrane separation unit.
    Type: Application
    Filed: October 20, 2021
    Publication date: May 19, 2022
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Sarah BIGEARD, Delphine GARNAUD, David J. HASSE, Sudhir S. KULKARNI, Edgar S. SANDERS, JR., Golo ZICK
  • METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY
    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
  • METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY
    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
  • METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY
    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
  • METALLOPOLYIMIDE PRECURSOR FIBERS FOR AGING-RESISTANT CARBON MOLECULAR SIEVE HOLLOW FIBER MEMBRANES WITH ENHANCED SELECTIVITY
    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
  • METHOD FOR PURIFYING BIOGAS THROUGH MEMBRANES AT NEGATIVE TEMPERATURES
    Publication number: 20170304769
    Abstract: The invention relates to a method for membrane permeation of a gas flow including methane and carbon dioxide, wherein said gas flow is cooled to a temperature of 0° C. to ?60° C. before being fed into a membrane separation unit.
    Type: Application
    Filed: August 12, 2015
    Publication date: October 26, 2017
    Applicant: L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude
    Inventors: Sarah BIGEARD, Delphine GARNAUD, David J. HASSE, Sudhir S. KULKARNI, Edgar S. SANDERS, Golo ZICK
  • Method of Obtaining Carbon Dioxide from a Carbon Dioxide-Containing Gas Mixture
    Publication number: 20140102298
    Abstract: Disclosed are methods of obtaining carbon dioxide from a CO2-containing gas mixture. The methods combine the benefits of gas membrane separation with cryogenic temperatures.
    Type: Application
    Filed: December 18, 2013
    Publication date: April 17, 2014
    Applicant: L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: David J. HASSE, Sudhir S. KULKARNI, Edgar S. SANDERS, JR., Jean-Pierre TRANIER, Paul TERRIEN
  • Method and System for Membrane-Based Gas Recovery
    Publication number: 20130255483
    Abstract: A fast gas is recovered from a feed gas containing a fast gas and at least one slow gas using a gas separation membrane. A controller may control a control valve associated with a partial recycle of a permeate gas from the membrane for combining with the feed gas. A controller may control a control valve associated with the backpressure of a residue gas from the membrane.
    Type: Application
    Filed: May 20, 2013
    Publication date: October 3, 2013
    Applicant: L'Air Liquide, Societe Anonyme pour I'Etude et I'Exploitation des Procedes Georges Claude
    Inventors: Edgar S. SANDERS, JR., Sarang Gadre, Michael D. Bennett, Ian R. Roman, David J. Hassee, Indrasts Mondal
  • Method and System for Membrane-Based Gas Recovery
    Publication number: 20130247761
    Abstract: A fast gas is recovered from a feed gas containing a fast gas and at least one slow gas using a gas separation membrane. A controller may control a control valve associated with a partial recycle of a permeate gas from the membrane for combining with the feed gas. A controller may control a control valve associated with the backpressure of a residue gas from the membrane.
    Type: Application
    Filed: May 21, 2013
    Publication date: September 26, 2013
    Applicant: L'Air Liquide, Societe Anonyme pour I'Etude et Exploitation des Procedes Georges Claude
    Inventors: Edgar S. SANDERS, JR., Sarang GADRE, Michael D. BENNETT, Ian C. ROMAN, David J. HASSE, Indrasis MONDAL
  • Method of Obtaining Carbon Dioxide From Carbon Dioxide-Containing Gas Mixture
    Publication number: 20110247360
    Abstract: Disclosed are methods of obtaining carbon dioxide from a CO2-containing gas mixture. The methods combine the benefits of gas membrane separation with cryogenic temperatures.
    Type: Application
    Filed: July 1, 2010
    Publication date: October 13, 2011
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: David J. HASSE, Sudhir S. KULKARNI, Edgar S. SANDERS, JR., Jean-Pierre TRANIER, Paul Terrien
  • Method of Obtaining Carbon Dioxide From Carbon Dioxide-Containing Gas Mixture
    Publication number: 20110239700
    Abstract: Disclosed are methods of obtaining carbon dioxide from a CO2-containing gas mixture. The methods combine the benefits of gas membrane separation with cryogenic temperatures.
    Type: Application
    Filed: July 1, 2010
    Publication date: October 6, 2011
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: David J. HASSE, Sudhir S. KULKARNI, Edgar S. SANDERS, JR., Jean-Pierre TRANIER, Paul Terrien
  • Method of Obtaining Carbon Dioxide From Carbon Dioxide-Containing Gas Mixture
    Publication number: 20110138852
    Abstract: Disclosed are methods of obtaining carbon dioxide from a CO2-containing gas mixture. The methods combine the benefits of gas membrane separation with cryogenic temperatures.
    Type: Application
    Filed: July 1, 2010
    Publication date: June 16, 2011
    Applicant: L'Air Liquide Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventors: David J. HASSE, Sudhir S. KULKARNI, Edgar S. SANDERS, JR., Jean-Pierre TRANIER, Paul TERRIEN
  • Membrane-Based Process for CO2 Capture from Flue Gases Generated by Oxy-Combustion of Coal
    Publication number: 20100275777
    Abstract: Disclosed is a membrane-based method and system for treatment of flue gases from an oxy-combustion coal-fired boiler to recover approximately 90% (vol/vol) to approximately 95% (vol/vol) of the carbon dioxide in the flue gas and produce a carbon dioxide product having a carbon dioxide concentration of approximately 90% (vol/vol dry basis) to approximately 97% (vol/vol dry basis).
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Inventors: David J. HASSE, Rajeev S. PRABHAKAR