1
Jiang Ji, Candeloro DiCecca, Edward M Schulz, Mahesh Mehta, David Stead, David McKinley, David H Koch: Hollow fiber microfiltration membranes and a method of making these membranes. Koch Membrane Systems, Stinson Morrison Hecker, May 10, 2005: US06890435 (80 worldwide citation)

A hollow fiber microfiltration (MF) membrane is provided. The casting solution used to make this membrane includes a fiber-forming polymer having a degree of polymerization greater than about 1000, a water-soluble polymer, an anhydride with about 2 to 12 carbon atoms, and a solvent. The membrane is ...


2
John P Puglia, David F McKinley: Self supporting hollow fiber membrane and method of construction. Koch Membrane Systems, Shook Hardy & Bacon L, June 13, 2000: US06074718 (71 worldwide citation)

A method for constructing a polyvinylidene fluoride based hollow fiber membrane from a polymer mixture using temperatures not greater than 80.degree. C., the mixture comprising polyvinylidene fluoride, a pore forming agent, and a solvent. The mixture can also comprise a second polymer selected from ...


3
Thomas C McDermott Jr, Daniel F Skelton: Spiral filtration module with strengthened membrane leaves and method of constructing same. Koch Membrane Systems, Shook Hardy & Bacon, September 15, 1992: US05147541 (49 worldwide citation)

The subject of the present invention is an improved leaf packet useful in forming a spiral filtration module, the improved module which results from utilization of the leaf packet and a method of preparing the leaf packet. The membrane sheet utilized in forming a spiral filtration module is fused an ...


4
Jiang Ji, Candeloro Dicecca, Mahesh J Mehta: Hydrophilic hollow fiber ultrafiltration membranes that include a hydrophobic polymer and a method of making these membranes. Koch Membrane Systems, Stinson Morrison Hecker, July 22, 2003: US06596167 (31 worldwide citation)

A hydrophilic membrane that includes a hydrophobic polymer and a water-soluble polymer-metal complex is provided. This membrane is made by heating a mixture of a hydrophobic polymer, a metal compound, and a water-soluble polymer. The water-soluble polymer forms complexes with the metal compound and ...


5
William C Rice, John P Puglia: High performance composite membrane. Koch Membrane Systems, Stinson Morrison Hecker, March 25, 2003: US06536605 (31 worldwide citation)

High quality reverse osmosis, nanofiltration, and ultrafiltration membranes are produced by a high speed process wherein the membranes which have excellent rejection characteristics coupled with high flux capabilities. The process employs tandem coating techniques to coat a microporous substrate wit ...


6
Thomas McDermott, Martin Roos, Stephen Jens, Robert Kovar: Method for sealing spiral wound filtration modules. Koch Membrane Systems, May 30, 2000: US06068771 (27 worldwide citation)

A method for preparing a spiral wound filtration module is provided. The module has a central permeate carrier tube. The method includes winding at least one filtration leaf about the permeate carrier tube. The filtration leaf includes a first membrane sheet, a permeate carrier sheet, and a second m ...


7
Todd A Truex, Clyde W Fulk Jr: Spiral wound membrane module and method of manufacture and use. Koch Membrane Systems, Richard P Crowley, December 20, 1988: US04792401 (25 worldwide citation)

A spirally wound, high flux membrane module which comprises a feed inlet, a concentration outlet and two permeate outlets and one or more membrane leaves wrapped about a central permeate flow tube to define a permeate flow path in one or more of the membrane leaves and wherein the improvement compri ...


8
Juchui R Lin: Epoxide-direct grafted halogenated vinyl polymers. Koch Membrane Systems, Shook Hardy & Bacon, September 27, 1994: US05350805 (16 worldwide citation)

An epoxy or trimethylene ether-direct grafted halogeneated vinyl polymer is prepared by the reaction of an epoxide such as a 5-ethyl, 5'-methyl-hydantoin/epichlorogydrin condensation product with a halogenated vinyl polymer such as polyvinylidene fluoride in the presence of a metal halide catalyst. ...


9
Clyde W Fulk Jr: Spiral wound filtration system and method of utilizing same. Koch Membrane Systems, Kokjer Kircher Bradley Wharton Bowman & Johnson, January 29, 1991: US04988445 (16 worldwide citation)

A filtration system and method constitute the subject matter of the present invention. The system comprises first and second filtration stages which are joined in series with each stage comprising a plurality of filtration modules range for parallel flow. The concentrate from the first stage forms t ...


10
David M Colby, Frederick K Lesan, Alan M Franks, Chang Li Hsieh, Anjan Kumar Mukherjee: Filtration element and method of constructing a filtration assembly. Koch Membrane Systems, Stinson Morrison Hecker, June 20, 2006: US07063789 (13 worldwide citation)

A coupler for a spiral membrane filtration element having a spiral membrane enclosed within a rigid outerwrap includes a center support, a plurality of spokes extending outwardly from the center support, a circular rim coupled with the spokes, with the face of the rim being perpendicular to the axis ...