1
Heinz Joachim Muller, Friedbert Wechs: Process for producing microporous powders and membranes. Akzo, Oliff & Berridge, November 6, 1990: US04968733 (131 worldwide citation)

A process produces microporous powders or shaped articles, in particular membranes in the form of flat films, tubular films or hollow fibers, which may be used for controlled release of an active compound, for dialysis, gas separation, ultrafiltration or microfiltration, from polyvinylidene fluoride ...


2
Heinz Joachim Muller, Heinz Dieter Sluma, Gunter Eberhard, Ernst Spindler, Lothar Krauss, Helmut Volker: Flat or capillary membrane based on a homogeneous mixture of polyvinylidene fluoride and a second polymer which can be rendered hydrophilic by chemical reaction. AKZO, Oliff & Berridge, November 19, 1991: US05066401 (89 worldwide citation)

Membranes are based on a homogeneous mixture of polyvinylidene fluoride and a second polymer which can be rendered hydrophilic by chemical reaction. The membranes contain 70 to 98 percent by weight of polyvinylidene fluoride and 2 to 30 percent by weight of a polymer formed essentially from polymeth ...


3
Heinz Joachim Muller: Modified membranes. Siemens Water Technologies, November 27, 2007: US07300022 (73 worldwide citation)

A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The reactivity modifying agent is pref ...


4
Daniel Mullette, Heinz Joachim Muller: Poly(ethylene chlorotrifluoroethylene) membranes. Siemens Water Technologies, July 24, 2007: US07247238 (61 worldwide citation)

Porous polymeric membranes including Halar (poly (ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The m ...


5
Heinz Joachim Muller: Modified membranes. U S Filter Wastewater Group, Knobbe Martens Olson & Bear, April 26, 2005: US06884350 (56 worldwide citation)

A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The reactivity modifying agent is pref ...


6
David John Cox, Georg Schnieder, Fufang Zha, Joachim Muller, Cinzia Lea: Potting method. U S Filter Wastewater Group, Pall Seitzschenk Filtersystems, December 13, 2005: US06974554 (56 worldwide citation)

A method of forming a pot for an array of hollow fiber membranes (7) is provided, including the steps of placing the ends (6) of the fiber membranes (7) in a mould (5); forming a first layer (20) of curable resin material in a non-cured state around the fiber membrane ends (6), applying a second lay ...


7
Heinz Joachim Muller, Daniel Mullette: Membrane polymer compositions. Siemens Water Technology, June 5, 2007: US07226541 (54 worldwide citation)

The invention relates to a terpolymer of tetrafluoroethylene (TFE) monomer, polyvinylidene fluoride (PVDF) monomer and hexafluoropropylene (HFP) monomer for forming an ultrafiltration or microfiltration membrane, method of forming said membranes, and to the ultrafiltration or microfiltration membran ...


8
Daniel Mullette, Heinz Joachim Muller: Poly(ethylene chlorotrifluoroethylene) membranes. Siemens Water Technologies, December 15, 2009: US07632439 (42 worldwide citation)

Porous polymeric membranes including HALARĀ® (poly(ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred solvents, coating agents and pore forming agents are citric acid ethyl ester or glycerol triacetate. The m ...


9
Daniel Mullette, Joachim Muller, Neeta Patel: Membrane post treatment. Siemens Water Technologies, February 16, 2010: US07662212 (40 worldwide citation)

The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a coating on the membrane or dispersed throughout the membrane or both. The membranes are preferably hydr ...


10
Heinz Joachim Muller: Modified membranes. Siemens Water Technologies, July 29, 2008: US07404896 (39 worldwide citation)

A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The reactivity modifying agent is pref ...



Click the thumbnails below to visualize the patent trend.