Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Reexamination Certificate
2006-04-11
2011-11-22
Fortuna, Ana M (Department: 1777)
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
C210S500220, C210S500270, C210S500410, C210S500380, C210S500360
Reexamination Certificate
active
08061532
ABSTRACT:
The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath to effect phase separation and form a porous membrane. The support can be a temporary support or form an integrated support for the membrane. The plurality of layers may be of the same polymer or different, same concentration or viscosity or different and may be subjected to the same processing conditions or different ones to form unique structures.
REFERENCES:
patent: 2806256 (1957-09-01), Smith-Johannsen
patent: 3347391 (1967-10-01), Steensen
patent: 3876738 (1975-04-01), Marinaccio et al.
patent: 3948823 (1976-04-01), Lee et al.
patent: 4164437 (1979-08-01), Henne et al.
patent: 4203847 (1980-05-01), Grandine, II
patent: 4203848 (1980-05-01), Grandine, II
patent: 4247498 (1981-01-01), Castro
patent: 4261834 (1981-04-01), de Winter
patent: 4340479 (1982-07-01), Pall
patent: 4340480 (1982-07-01), Pall et al.
patent: 4489671 (1984-12-01), Choinski
patent: 4629563 (1986-12-01), Wrasidlo
patent: 4666607 (1987-05-01), Josefiak et al.
patent: 4707265 (1987-11-01), Barnes, Jr. et al.
patent: 4770777 (1988-09-01), Steadly et al.
patent: 4774039 (1988-09-01), Wrasidlo
patent: 4873037 (1989-10-01), Chau et al.
patent: 4882223 (1989-11-01), Aptel et al.
patent: 4933081 (1990-06-01), Sasaki et al.
patent: 4983288 (1991-01-01), Karbachsch et al.
patent: 4990294 (1991-02-01), Yen et al.
patent: 5009824 (1991-04-01), Walch et al.
patent: 5013339 (1991-05-01), Mahoney et al.
patent: 5147553 (1992-09-01), Waite
patent: 5228994 (1993-07-01), Tkacik et al.
patent: 5232597 (1993-08-01), Eguchi
patent: 5240615 (1993-08-01), Fishman
patent: 5242636 (1993-09-01), Sluma et al.
patent: 5256357 (1993-10-01), Hayward
patent: 5273657 (1993-12-01), Nakashima et al.
patent: 5433859 (1995-07-01), Degen
patent: 5444097 (1995-08-01), Tkacik
patent: 5462867 (1995-10-01), Azad et al.
patent: 5468430 (1995-11-01), Ekiner et al.
patent: 5489406 (1996-02-01), Beck et al.
patent: 5500167 (1996-03-01), Degen
patent: 5514461 (1996-05-01), Meguro et al.
patent: 5550167 (1996-08-01), DesMarais
patent: 5562983 (1996-10-01), Kono et al.
patent: 5620790 (1997-04-01), Holzki et al.
patent: 5626805 (1997-05-01), Meguro et al.
patent: 5736051 (1998-04-01), Degen et al.
patent: 5741549 (1998-04-01), Maier et al.
patent: 5811196 (1998-09-01), Hachisuka et al.
patent: 5834107 (1998-11-01), Wang et al.
patent: 5846422 (1998-12-01), Ditter et al.
patent: 5869174 (1999-02-01), Wang
patent: 5886059 (1999-03-01), Wang
patent: 5906742 (1999-05-01), Wang et al.
patent: 5958989 (1999-09-01), Wang et al.
patent: 5962075 (1999-10-01), Sartor et al.
patent: 5979670 (1999-11-01), Ditter et al.
patent: 6045899 (2000-04-01), Wang et al.
patent: 6056529 (2000-05-01), Meyering et al.
patent: 6090441 (2000-07-01), Vining, Jr. et al.
patent: 6110369 (2000-08-01), Ditter et al.
patent: 6146747 (2000-11-01), Wang et al.
patent: 6264044 (2001-07-01), Meyering et al.
patent: 6277281 (2001-08-01), Ditter et al.
patent: 6284137 (2001-09-01), Hajikano et al.
patent: 6440306 (2002-08-01), Ditter et al.
patent: 6464084 (2002-10-01), Pulck
patent: 6497752 (2002-12-01), Kessler et al.
patent: 6513666 (2003-02-01), Meyering et al.
patent: 6536605 (2003-03-01), Rice et al.
patent: 6565782 (2003-05-01), Wang et al.
patent: 6623841 (2003-09-01), Venkatasanthanam et al.
patent: 6706184 (2004-03-01), Sale et al.
patent: 6706784 (2004-03-01), Gesser et al.
patent: 6736912 (2004-05-01), Fields et al.
patent: 6736971 (2004-05-01), Sale et al.
patent: 6802971 (2004-10-01), Gorsuch et al.
patent: 6933081 (2005-08-01), Yang et al.
patent: 6939468 (2005-09-01), Wang et al.
patent: 6976940 (2005-12-01), Schneider
patent: 6994789 (2006-02-01), Sale et al.
patent: 6994811 (2006-02-01), Kools
patent: 7140496 (2006-11-01), Nagoya et al.
patent: 7201860 (2007-04-01), Wechs
patent: 7208200 (2007-04-01), Kools
patent: 7229665 (2007-06-01), Kools
patent: 7560024 (2009-07-01), Kools et al.
patent: 7560025 (2009-07-01), Kools
patent: 2002/0113006 (2002-08-01), Sale et al.
patent: 2002/0127387 (2002-09-01), Sale et al.
patent: 2003/0035943 (2003-02-01), Jones et al.
patent: 2003/0209485 (2003-11-01), Kools
patent: 2003/0217965 (2003-11-01), Kools
patent: 2004/0084364 (2004-05-01), Kools
patent: 2004/0124135 (2004-07-01), Sale et al.
patent: 2005/0014151 (2005-01-01), Textor et al.
patent: 2005/0040100 (2005-02-01), Kools
patent: 2006/0086657 (2006-04-01), Kools
patent: 2006/0180544 (2006-08-01), Kools
patent: 0 572 329 (1993-05-01), None
patent: 0 578 210 (1994-01-01), None
patent: 0 764 461 (2002-08-01), None
patent: 56-91815 (1981-07-01), None
patent: 60-76323 (1985-04-01), None
patent: 60-132605 (1985-07-01), None
patent: 62-19205 (1987-02-01), None
patent: 62-11617 (1994-08-01), None
patent: 09-24260 (1997-01-01), None
patent: 2009-254294 (2009-11-01), None
patent: WO 93/22034 (1993-11-01), None
patent: WO 94/09880 (1994-05-01), None
patent: WO 98/30379 (1998-07-01), None
patent: 9947335 (1999-09-01), None
patent: 00/43113 (2000-07-01), None
patent: WO 01/89672 (2001-11-01), None
patent: WO 01/89673 (2001-11-01), None
Philip a. Schweitzer, Handbook of Separation Techniques for Chemical Engineers, McGraw-Hill Book Company, 1979.; p. 2-5.
U.S. Appl. No. 10/970,853 entitled “Process of Forming Multilayered Structures” to Willem Kools, filed Oct. 21, 2004.
Brock, “Membrane Filtration: A User's Guide and Reference Manual,” Chapter 3, pp. 29-35 (1983).
Cohen, “Two-Layer Slot Coating: Flow Visualization and Modelling,” Thesis, University of Minnesota, Dec. 1993.
Gröbe et al., “Multilayer Membranes I. A New Type of Asymmetric Synthetic Membranes,”Synthetic Polymeric Membranes, Ed. B. Sedlacek, J. Kahovec, Walter Gruyter & Co., Berlin, (1987).
Gröbe et al., “Ein neues Prinzip für die Herstellung von asymmetrischen Polymermembranen,”Acta Polymerica30:62-63 (1979).
Hiatt et al., “Microporous Membranes Via Upper Critical Temperature Phase Separation,”Materials Science of Synthetic Membranes, ed., D.R. Lloyd, American Chemical Society, Washington, D.C., pp. 229-244 (1985).
Kools, “Membrane Formation by Phase Inversion in Multicomponent Polymer Systems, Mechanisms and Morphologies,” Thesis, pp. 1-191, Feb. 27, 1998.
Schenkel, “Plastics Extrusion Technology and Theory,” Iliffe Books Ltd., London, published by American Elsevier Publishing Company Inc., New York, pp. 336-337 (1967).
Taylor & Hrymak, “Visualization and Flow Simulation of a Two-Layer Slot Coater,”Chemical Engineering Science54:909-918 (1999).
Taylor, “Two-Layer Slot Coating: Study of Die Geometry and Interfacial Region,” Thesis, McMaster University, Jul. 1997.
Weigel et al., “Bicomponent membranes. IV. Influence of Membrane Formation Principles on the Structure of the Active Layer of Membranes,”Acta Polymerica42:366-371 (1991).
Weigel et al., “Bikomponentenmembranen II. Herstellung von Bikomponentenmembranen unter Einsatz einer Bikomponentenbreitschlitzdüse,”Acta Polymerica40:734-740 (1989).
Weigel et al., “Bikomponentenmembranen III. Diffusion und Strukturbildung bei der Koagulation von Polymerlösungen unetr Einsatz einer Bikomponentenbreitschlitzdüse,”Acta Polymerica41:124-131 (1990).
Fortuna Ana M
LeClairRyan
Millipore Corporation
LandOfFree
Process of forming multilayered structures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process of forming multilayered structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of forming multilayered structures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4306999