US Patent No: 7,938,891

Number of patents in Portfolio can not be more than 2000

Using ionic liquids

ALSO PUBLISHED AS: 20090233155

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Importance

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Abstract

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Carbon dioxide or other gases can be separated from gas streams using ionic liquid, such as in an electrochemical cell. For example, a membrane can contain sufficient ionic liquid to reduce ionic current density of at least one of protons and hydroxyl ions, relative to carbon-containing ionic current density. A gas stream containing carbon dioxide can be introduced on a cathode side, while a source of hydrogen gas can be introduced on the anode side of the membrane. Operation of an electrochemical cell with such a membrane can separate the carbon dioxide from the gas stream and provide it at a separate outlet.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PALO ALTO RESEARCH CENTER INCORPORATEDPALO ALTO, CA1041

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Littau, Karl Anthony Sunnyvale, CA 12 224

Cited Art Landscape

Patent Info (Count) # Cites Year
 
PALO ALTO RESEARCH CENTER INCORPORATED (2)
2009/0159,456 Separating Gas Using Ion Exchange 6 2007
2010/0005,959 Separating Gas Using Immobilized Buffers 6 2008
 
AT&T IPM CORP. (1)
5,472,585 Regeneration of spent electroless copper plating solution 15 1994
 
B.P.T. BIO PURE TECHNOLOGY LTD. (1)
5,597,863 Immobilized buffered gels and membranes of hydroxy groups containing polymers 7 1995
 
BASF AKTIENGESELLSCHAFT (1)
5,258,106 Electrolysis of alkali metal sulfates 7 1991
 
DORNIER GMBH (1)
5,876,486 Method and apparatus for removing carbon dioxide 35 1996
 
ELTRON RESEARCH, INC. (1)
6,793,711 Mixed conducting membrane for carbon dioxide separation and partial oxidation reactions 17 2000
 
MOTOROLA MOBILITY LLC (1)
6,908,500 System and method for controlling gas transport in a fuel cell 5 2002
 
PHYSICAL SCIENCES, INC. (1)
5,133,842 Electrochemical cell having electrode comprising gold containing electrocatalyst 34 1991
 
SCHLUMBERGER TECHNOLOGY CORPORATION (1)
2008/0115,667 Conductive membrane for carbon dioxide separation 7 2007
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (1)
5,358,556 Membranes having selective permeability 13 1993
 
UNIVERSITY OF NOTRE DAME DU LAC (1)
6,579,343 Purification of gas with liquid ionic compounds 77 2002
 
UNIVERSITY OF WYOMING (1)
2007/0119,302 Polymers containing ionic groups for gas separation and storage 7 2006

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
ENERGY, UNITED STATES DEPARTMENT OF (1)
8,383,026 Fabrication of fiber supported ionic liquids and methods of use 0 2010
 
PALO ALTO RESEARCH CENTER INCORPORATED (1)
8,029,599 Separating gas using immobilized buffers 0 2011

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