Helium recovery process

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8152898
APP PUB NO 20100101410A1
SERIAL NO

12571934

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Helium is recovered from gas streams containing high concentrations of hydrogen gas and low concentrations of helium gas, such as from the recycle stream from the production of ammonia. The inventive process provides for an integrated process for the recovery of both an enriched helium gas stream product and a high purity hydrogen gas stream product.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
PRAXAIR TECHNOLOGY, INC.DANBURY, CT881

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Heim, Carl Joseph Amherst, US 9 32
Maloney, James Joseph Amherst, US 5 16
Prasad, Ravi East Amherst, US 121 2350

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Membrane Technology and Research, Inc. (1)
2005/0217,479 Helium recovery from gas streams 10 2004
 
UBE INDUSTRIES, LTD. (1)
* 5064446 Method of preparing high purity light gas by multiple-step gas separation 26 1988
 
Nitrotec Corporation (2)
5542966 Helium recovery 11 1994
5632803 Enhanced helium recovery 21 1995
 
Petroleo Brasileiro S.A.-Petrobras (1)
6179900 Process for the separation/recovery of gases 42 1998
 
International Permeation, Inc. (1)
* 4793829 Permeation process for separating ammonia from a gas mixture 8 1988
 
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (2)
* 5928415 Selection device for providing one or the other of two gases to an apparatus 8 1996
* 6669922 Installation for the production of pure hydrogen from a gas containing helium 2 2000
 
ALLIED CORPORATION A CORP. OF NY (1)
4425318 Hydriding body-centered cubic phase alloys at room temperature 12 1982
 
PRAXAIR TECHNOLOGY, INC. (4)
5185014 Membrane oxygen process and system 25 1991
5329775 Cryogenic helium production system 6 1992
5771714 Cryogenic rectification system for producing higher purity helium 3 1997
* 7294172 Helium recovery 15 2002
 
Bergwerksverband GmbH (1)
5080694 Process for helium recovery 14 1989
 
UNION CARBIDE INDUSTRIAL GASES INC. (1)
4934148 Dry, high purity nitrogen production process and system 44 1989
 
UOP LLC (1)
4398926 Enhanced hydrogen recovery from low purity gas streams 59 1982
 
ERGENICS, INC. (1)
4360505 Recovering hydrogen from gas stream using metal hydride 24 1981
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
PRAXAIR TECHNOLOGY, INC. (2)
9676628 Integrated process and apparatus for recovery of helium rich streams 0 2015
9623370 Integrated process and apparatus for recovery of helium rich streams 0 2015
* Cited By Examiner

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