Charged membrane

Details Charged membrane Charged membrane

2005-02-01

2005-02-01

Kim, John (Department: 1723)

Liquid purification or separation

Processes

Ion exchange or selective sorption

C210S488000, C210S490000, C210S500240, C210S500270, C210S500410, C210S502100, C210S504000, C264S041000, C427S244000, C427S245000, C427S487000, C436S178000, C521S027000

Reexamination Certificate

active

06849185

ABSTRACT:
The present invention provides a hydrophilic charged microporous membrane comprising a porous hydrophobic substrate and a coating comprising a charge-providing agent. The present invention further provides a hydrophilic charged membrane comprising a porous hydrophobic substrate and a hydrophilic charge-providing agent distributed within the substrate. The present invention further provides a filter as well as a filter device comprising the inventive hydrophilic charged membrane. The present invention further provides a process for treating a fluid containing bacterial contaminants such as endotoxins comprising contacting the membrane with the fluid to provide a bacterial contaminant depleted fluid.

REFERENCES:
patent: 4380590 (1983-04-01), Chong
patent: 4523995 (1985-06-01), Pall et al.
patent: 4618533 (1986-10-01), Steuck
patent: 4702840 (1987-10-01), Degen et al.
patent: 4980067 (1990-12-01), Hou et al.
patent: 5004543 (1991-04-01), Pluskal et al.
patent: 5021160 (1991-06-01), Wolpert
patent: 5032281 (1991-07-01), Nagamatsu et al.
patent: 5051114 (1991-09-01), Nemser et al.
patent: 5085780 (1992-02-01), Ostreicher
patent: 5116650 (1992-05-01), Browser
patent: 5128041 (1992-07-01), Degen et al.
patent: 5151189 (1992-09-01), Hu et al.
patent: 5269931 (1993-12-01), Hu et al.
patent: 5277812 (1994-01-01), Hu et al.
patent: 5407581 (1995-04-01), Onodera et al.
patent: 5438128 (1995-08-01), Nieuwkerk et al.
patent: 5462867 (1995-10-01), Azad et al.
patent: 5531893 (1996-07-01), Hu et al.
patent: 5543054 (1996-08-01), Charkoudian et al.
patent: 5749942 (1998-05-01), Mattis et al.
patent: 6183640 (2001-02-01), Wang
patent: 6258272 (2001-07-01), Wang et al.
patent: 0 228 072 (1987-07-01), None
patent: 0 347 755 (1989-12-01), None
patent: WO 9801208 (1998-01-01), None
Anspach, F. et al., J. Chrom. A., 711, 81-92 (1995).
Ball P.R. et al.,Endotoxin Retention Capabilities of the Pall Intravenous Set Saver, BM2117 (1990).
Baumgartner, T. et al., Amer. J. Hosp. Pharm., 43, 681-684 (1986).
Belanich, M. et al., Pharm. Tech., 142-150 (1996).
Held, D. et al., Pharm. Tech., 32-38 (1997).
Horibe, K. et al., J. Par. Ent. Nutr., 14(1), 56-59 (1990).
Hou, K. et al., Biochem. Biophys. Acta, 1073, 149-154 (1991).
Hou, K. et al., Biotech. Appl. Biochem., 12, 315-324 (1990).
Kendall, K., et al., “Endotoxin Rentention Capabilities of Positively Charged Nylon and Positively Charged Polysulphone Membrane Intravenous Filters”, Pall Technical Report, (1994).
Petsch D. et al., J. Chrom. B., 693, 79-91 (1997).
Richards, C. et al., J. Clin. Pharm. Ther., 19, 199-202 (1994).
Spielberg, R. et al.,Labortory Evaluation of Endotoxin Retention By Pall 0.2μm Posidyne Membrane, 1-ER-96, (1991).

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