1
I Fan Wang, Richard A Morris, Robert F Zepf: Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters. USF Filtration & Separations Group, Knobbe Martens Olson & Bear, April 4, 2000: US06045899 (143 worldwide citation)

The present invention relates to the field of synthetic polymeric microfiltration membrane materials that are fabricated to separate liquids from solids contained therein. One aspect of the invention relates to a highly asymmetric, hydrophilic microfiltration membrane with high surface porosity. The ...


2
David B Pall, Thomas C Gsell, Vlado I Matkovich, Thomas Bormann: System and method for processing biological fluid. Pall Corporation, Leydig Voit & Mayer, June 8, 1993: US05217627 (122 worldwide citation)

A system for collecting and processing donated blood comprises a first porous medium interposed between a blood collection bag and a satellite bag and a second porous medium interposed between the blood collection bag and another satellite bag. The porous media are leucocyte depletion media. The sys ...


3
Bo E H Lundberg: Filter unit. McAulay Fisher Nissen & Goldberg, March 12, 1991: US04999038 (118 worldwide citation)

The present invention relates to a filter unit having a sheet of filtering material mounted on a first frame and a second frame received within and below the first frame. The second frame is configured such that the filtering material is tightly held between the first and second frames and the filte ...


4
Mailvaganam Mahendran, Kenneth Paul Goodboy, Luigi Fabbricino: Hollow fiber membrane and braided tubular support therefor. Zenon Environmental, Alfred D Lobo, March 12, 2002: US06354444 (115 worldwide citation)

An asymmetric membrane comprising a tubular polymer film in combination with a tubular braid on which the film is supported, requires the braid be macroporous and flexible, yet sufficiently strong to withstand continuous flexing, stretching and abrasion during use for microfiltration (MF) or ultrafi ...


5
Xiaosong Wu, Joel Shertok, Peter Konstantin: Hydrophilic membrane. Pall Corporation, Leydig Voit & Mayer, March 21, 2000: US06039872 (110 worldwide citation)

A hydrophilic porous membrane is provided which comprises a network of a non-crystalline hydrophobic polymer and a hydrophilic acrylate polymer. A method of preparing such a hydrophilic porous membrane also is provided, wherein a reaction solution of a non-crystalline hydrophobic polymer, a crosslin ...


6
I Fan Wang, Jerome F Ditter, Rick Morris: Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure. USF Filtration and Separations Group, Knobbe Martens Olson & Bear, May 25, 1999: US05906742 (109 worldwide citation)

The present invention relates to the field synthetic polymeric microfiltration membrane materials that are fabricated to separate liquids from solids contained therein. One aspect of the invention relates to a sulfone polymer membrane with high surface porosity (high pore density) and distinctive as ...


7
Peter J Degen, Jerold Martin, Judy Schriefer, Brenda Shirley: Methods of concentrating ligands and active membranes used therefor. Pall Corporation, Leydig Voit & Mayer, September 15, 1987: US04693985 (106 worldwide citation)

A chemically active membrane having a large surface area is provided in which a hydrophilic, microporous, skinless, polyamide membrane is chemically bound to a residue of an activating agent which is capable of reacting with a biologically active material.


8
Xiaosong Wu, Joel Shertok, Peter Konstantin: Hydrophilic membrane. Pall Corporation, Leydig Voit & Mayer, July 4, 2000: US06083393 (99 worldwide citation)

A hydrophilic porous membrane is provided which comprises a network of a non-crystalline hydrophobic polymer and an in situ crosslinked hydrophilic acrylate polymer. A method of preparing such a hydrophilic porous membrane also is provided, wherein a reaction solution of a non-crystalline hydrophobi ...


9
Mailvaganam Mahendran, Kenneth Paul Goodboy, Jinhua Bai: Filtration membrane with calcined .alpha.-alumina particles therein. Zenon Environmental, Alfred D Lobo, June 22, 1999: US05914039 (99 worldwide citation)

A filtration membrane for micro- or ultra-filtration is formed from a complex of PVDF and calcined .alpha.-alumina (".alpha.-Al") particles, in which complex the particles are reacted and dispersed. The suspended complex is then mixed with a hydrophilic polymer such as polyvinyl alcohol (40%-90% hyd ...


10
Mailvaganam Mahendran, Kenneth Paul Goodboy, Jinhua Bai: Method of making a dope comprising hydrophilized PVDF and .alpha.-alumina, and a membrane made therefrom. Zenon Evironmental, Alfred D Lobo, February 15, 2000: US06024872 (97 worldwide citation)

A filtration membrane for micro- or ultra-filtration is formed from a complex of PVDF and calcined .alpha.-alumina (".alpha.-Al") particles, in which complex the particles are reacted and dispersed. The suspended complex is then mixed with a hydrophilic polymer such as polyvinyl alcohol (40%-90% hyd ...