Separation membrane

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5972080
SERIAL NO

08900705

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Separation membranes excellent in strength, durability, heat resistance and solvent resistance as well as in balance between substance separation properties and substance permeability are disclosed, which are formed from polyhydrazidoimide resins, and preferably comprises a non-porous dense layer formed from a polyhydrazidoimide resin obtained from the reaction of an aromatic tetracarboxylic dianhydride such as 4,4'-(hexafluoroisopropylidene)diphthalic anhydride and an aromatic dihydrazide such as isophthalic dihydrazide as essential components.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DAINIPPON INK AND CHEMICALS, INC.TOKYO195

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagata, Yoshitomo Chiba, JP 4 50

Cited Art Landscape

Patent Info (Count) # Cites Year
 
UBE INDUSTRIES, LTD. (3)
* 4378324 Process for preparing aromatic polyimide semipermeable membranes 55 1980
* 5141642 Aromatic polyimide double layered hollow filamentary membrane and process for producing same 24 1989
* 5286539 Gas separating asymmetric membrane 18 1992
 
MG GENERON, INC. (1)
* 5409524 Membranes having improved selectivity and recovery, and process for making same 30 1993
 
TOYOBO CO., LTD. (1)
* 5034026 Polybenzazole polymers containing indan moieties 12 1990
 
AIR PRODUCTS AND CHEMICALS, INC. (2)
* 5034027 Membranes formed from rigid aromatic polyamides 10 1990
* 5061298 Gas separating membranes formed from blends of polyimide polymers 21 1990
 
W. R. GRACE & CO.-CONN. (1)
* 5429748 Polymide membrane for separation of solvents from lube oil 5 1993
 
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (7)
* 5015270 Phenylindane-containing polyimide gas separation membranes 28 1989
* 5248319 Gas separation membranes made from blends of aromatic polyamide, polymide or polyamide-imide polymers 40 1992
* 5266100 Alkyl substituted polyimide, polyamide and polyamide-imide gas separation membranes 23 1992
* 5232472 Polyimide and polyamide-imide gas separation membranes 24 1992
* 5320650 Fluorinated aromatic polyimide, polyamide and polyamide-imide gas separation membranes 20 1993
* 5334697 Polyimide gas separation membranes 13 1993
* 5635067 Fluid separation membranes prepared from blends of polyimide polymers 13 1995
 
PRAXAIR TECHNOLOGY, INC. (1)
* 5055114 Semipermeable membranes based on specified tetrabromobisphenol type polyesters 8 1989
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (3)
* 2006/0204,812 Aromatic polymer, film, electrolyte membrane and separator 9 2004
* 2009/0182,171 Compound having oxadiazole structure and a dehydration-cyclization method for producing the same 0 2009
* 2010/0116,137 REMOVAL OF CARBON DIOXIDE FROM AIR 28 2009
 
UBE INDUSTRIES, LTD. (2)
8420211 Porous polyimide membrane and process for production of same 0 2009
8980421 Porous polyimide membrane and process for production thereof 0 2011
 
MITSUBISHI CHEMICAL CORPORATION (1)
* 6379796 Composite hollow fiber membrane 21 2000
 
THE OHIO STATE UNIVERSITY (1)
9216390 Systems, compositions, and methods for fluid purification 3 2011
 
BRITISH GAS PACIFIC PTE LIMITED (1)
* 6660062 Chemical modification of polyimides 11 2002
 
Solvay Advanced Polymers, L.L.C. (1)
* 2010/0095,876 Coal combustion flue gas filters 2 2008
 
TORAY INDUSTRIES, INC. (2)
* 7511112 Aromatic polymer, film, electrolyte membrane and separator 3 2004
7868102 Method for producing a film of an aromatic amide oxadiazole polymer containing an oxadiazole structure and the film so produced 1 2009
 
L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE (1)
* 6383258 Copolyimide gas separation membranes 19 2000
 
HONEYWELL INTERNATIONAL INC. (1)
* 2006/0011,063 High temperature gas separation membrane suitable for OBIGGS applications 11 2004
 
CARBON SINK INC. (18)
8088197 Removal of carbon dioxide from air 22 2006
7993432 Air collector with functionalized ion exchange membrane for capturing ambient CO.sub.2 34 2007
* 2007/0217,982 AIR COLLECTOR WITH FUNCTIONALIZED ION EXCHANGE MEMBRANE FOR CAPTURING AMBIENT CO2 21 2007
8715393 ) from air 9 2008
8133305 Removal of carbon dioxide from air 26 2008
* 2009/0120,288 REMOVAL OF CARBON DIOXIDE FROM AIR 48 2008
8262774 English Title Not Available 5 2008
8999279 English Title Not Available 5 2009
8337589 Method and apparatus for extracting carbon dioxide from air 5 2010
8273160 Method and apparatus for extracting carbon dioxide from air 7 2010
8083836 Method and apparatus for extracting carbon dioxide from air 25 2010
8246723 English Title Not Available 4 2011
8221527 English Title Not Available 8 2011
9205372 English Title Not Available 2 2012
9266051 Removal of carbon dioxide from air 2 2013
9616375 Capture of carbon dioxide (CO2) from air 0 2014
9266052 Method and apparatus for extracting carbon dioxide from air 2 2014
9527747 Extraction and sequestration of carbon dioxide 0 2014
 
Kilimanjaro Energy, Inc. (2)
7833328 Laminar scrubber apparatus for capturing carbon dioxide from air and methods of use 31 2009
* 2009/0320,688 Laminar Scrubber Apparatus for Capturing Carbon Dioxide From Air and Methods of Use 10 2009
 
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM (7)
* 6602415 Polymeric membrane for separation of fluids under elevated temperature and/or pressure conditions 6 2001
6932859 Crosslinked and crosslinkable hollow fiber membrane and method of making same 28 2002
6755900 Crosslinked and crosslinkable hollow fiber mixed matrix membrane and method of making same 44 2002
7160356 Dithiolene functionalized polymer membrane for olefin/paraffin separation 17 2004
* 2005/0000,899 Dithiolene functionalized polymer membrane for olefin/paraffin separation 3 2004
8394182 Crosslinked membrane and polymer for making same and method of using membrane 6 2010
* 2012/0305,484 Thermally Rearranged (TR) Polymers as Membranes for Ethanol Dehydration 4 2011
 
CHEVRON U.S.A. INC. (5)
7247191 Crosslinked and crosslinkable hollow fiber membrane and method of making same utility 34 2005
* 2005/0268,783 Crosslinked and crosslinkable hollow fiber membrane and method of making same utility 12 2005
8221531 Crosslinked polyimide membrane, method for making the same using organic titanate catalysts to facilitate crosslinking and method of using the membrane for fluid separation 0 2007
* 2009/0165,645 CROSSLINKED POLYIMIDE MEMBRANE, METHOD FOR MAKING THE SAME USING ORGANIC TITANATE CATALYSTS TO FACILITATE CROSSLINKING AND METHOD OF USING THE MEMBRANE FOR FLUID SEPARATION 6 2007
8337586 Crosslinked polyimide membrane, method for making the same using organic titanate catalysts to facilitate crosslinking and method of using the membrane for fluid separation 1 2012
 
J. WILLIAM BOX (1)
6592573 Through-port heart stabilization system 34 2001
* Cited By Examiner