Membranes and methods useful for caustic applications

Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C210S652000, C210S653000, C210S500410, C210S500380, C423S121000, C423S122000, C423S130000

Reexamination Certificate

active

07575687

ABSTRACT:
The invention provides methods for purifying caustic feed streams using membranes that comprise polysulfonamide matrices.

REFERENCES:
patent: 3744642 (1973-07-01), Scala et al.
patent: 4277344 (1981-07-01), Cadotte
patent: 4357220 (1982-11-01), Eisenmann
patent: 4676959 (1987-06-01), The et al.
patent: 4678477 (1987-07-01), The et al.
patent: 4761234 (1988-08-01), Uemura et al.
patent: 4765897 (1988-08-01), Cadotte et al.
patent: 4778596 (1988-10-01), Linder et al.
patent: 4786482 (1988-11-01), The et al.
patent: 4859384 (1989-08-01), Fibiger et al.
patent: 4950404 (1990-08-01), Chau
patent: 4960517 (1990-10-01), Cadotte
patent: 4983291 (1991-01-01), Chau et al.
patent: 5387405 (1995-02-01), Connelly et al.
patent: 5527524 (1996-06-01), Tomalia et al.
patent: 5582725 (1996-12-01), McCray et al.
patent: 5627217 (1997-05-01), Rilling et al.
patent: 5693227 (1997-12-01), Costa et al.
patent: 5814127 (1998-09-01), Li
patent: 6204231 (2001-03-01), Patten et al.
patent: 6454958 (2002-09-01), Loehr
patent: 6565747 (2003-05-01), Shintani et al.
patent: 6783711 (2004-08-01), Kurth et al.
patent: 6837996 (2005-01-01), Kurth et al.
patent: 6987150 (2006-01-01), Kurth et al.
patent: 2003/0121857 (2003-07-01), Kurth et al.
patent: 2004/0052706 (2004-03-01), Armstrong et al.
patent: 1020218 (2000-07-01), None
patent: 1 044 718 (2000-10-01), None
patent: 976 392 (1964-11-01), None
patent: WO 95/27681 (1995-10-01), None
patent: WO 01/89654 (2001-11-01), None
patent: WO 01/90223 (2001-11-01), None
patent: WO 01/91873 (2001-12-01), None
patent: WO 02/051753 (2002-07-01), None
patent: WO 2004/014805 (2004-02-01), None
Evers et al., “Poly-m-phenoxylene Sulfonamides”,Journal of Polymer Science, Part A-1, vol. 5, pp. 935-940, 1967.
Poslyakova et al., “Chemical Resistance of Ultrafiltration Membranes”, Plast Massy, No. 1, p. 20, 1995.
Database WPI Week 197539, Derwent Publications Ltd., London, GB, 1975-64595W.
Armstrong et al., “A New Membrane Process to Purify Bayer Liquors”,Proceedings of the 6thInternational Alumina Quality Workshop, 6 pgs., 2002.
Awadalla et al., “Separation of Humic Acids from Bayer Process Liquor by Membrane Filtration”,Separation Science and Technology, 29(8). pp. 1011-1028, 1994.
Awadalla et al., “Opportunities for Membrane Technologies in the Treatment of Mining and Mineral Process Streams and Effluents”,Separation Science and Technology, 29(10). pp. 1231-1249, 1994.
Clegg et al., “Development of Liquor Purification at Alcan Gove”,Proceedings of the 7thInternational Alumina Quality Workshop, 12 pgs., 2005.
Gillespie, Bayer Liquid Purification by Nano-Filtration Membranes,Proceedings of the 7thInternational Alumina Quality Workshop, 10 pgs., 2005.
Marciano et al., “Nanofiltration of Bayer process solutions”,Journal of Membrane Science, 281, pp. 260-267, 2006.
Trushinski et al., “Polysulfonamide thin-film composite reverse osmosis membranes”,Journal of Membrane Science, 143, pp. 181-188, 1998.
SeIRO MPT-34-ph Stable Membrane, Koch Membrane Systems Product Description, 2 pgs., 06/04 RO Spec. Sheet.
Database WPI Week 197539, Derwent Publications Ltd., London, GB, 1975-64595W, Mar. 3, 1975.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Membranes and methods useful for caustic applications does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Membranes and methods useful for caustic applications, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Membranes and methods useful for caustic applications will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4129559

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.