Volkswagen Ag

Elcomax Membranes Gmbh

Global Life Sciences Solutions Germany Gmbh

General Electric Company

Whatman Gmbh

Qiagen Healthcare Biotechnologies Systems Gmbh

Suzana Kiel

Dieter Melzner

Annette Reiche

Klaus Hochleitner

Alexander Schenk

Ulrich Maehr

Wei Sun

Stefan Haufe

Marcel Thieme

John Richard Nelson

Michael John Gerdes

Peter James Tatnell

Ralf Lenigk

Jeffrey Kenneth Horton

Patrick McCoy Spooner

Ulrich Mahr

Ulrich Mähr

Wolfgang Thamm

Daniela Katarzynski

Georg Peter Danisch

Patrick Mccoy Spooner

In a lateral flow test (LFT) device, the liquid conduit elementis formed from a substrateorhaving at least two layers, including a first layerornot exceeding 75 &#x3bc;m in thickness formed from a porous material for wicking liquid, and a second layerorof additional thickness formed from a generally non-porous polymer material acting as backing layer. The layered arrangement is incorporated into an LFT device to reduce sample volume requirements.

Lateral flow testing

Disclosed is a method and apparatus for manufacturing a continuous web of polymeric membrane and for continuous downstream processing of said web. The apparatus () comprises: a casting station () for casting the continuous web (M); a carrier () for carrying the web downstream; a membrane drier () downstream of the carrier, for drying the web; and a brushing station () downstream of the drier for brushing the web. Said drier is located immediately downstream of the carrier, and upstream of said brushing station. The apparatus () further includes an additional drying station () downstream of the brushing station (). Brushing after drying retains more surfactant in the membrane which is useful for certain applications. In addition, initial drying eliminates virtually all solvents from the membrane, but leaves some non-solvent (e.g. water) within it, which in turn fixes the surfactant on the nitrocellulose fibers, which improves significantly the consistency and reproducibility of the membrane.

Polymeric membranes

The invention generally relates to methods and kits for capturing sperm nucleic acids from or in a biological sample. In one embodiment the method the method includes, contacting the sample with a lysis solution, having a protamine-DNA complex, to lyse the cell and applying a protamine-specific antibody. This results in the protamine-specific antibody binding to the protamine-DNA to form a complex which may be captured, purified, or detected. Also provided are kits for carrying out the disclosed methods.

Methods and kits for capturing sperm nucleic acids

A membrane filteris disclosed comprising cellulous materialallowing the transition of fluid therethrough, and, in a substantially dry state, said membrane comprising also a salt of deoxycholic acid. Optionally, the air side of the membrane (the side facing away from the screen or belt used to manufacture the membrane) faces the sample fluid during use of the membrane. A method of manufacture of the membrane material is disclosed also, employing deoxycholic acid as a surfactant, to improve the recovery rate of the membrane filter in use.

Membrane filter including bile acid and a method of manufacturing the same

A membrane-electrode assembly and polymer electrolyte fuel cells and methods of production thereof, in which a polymer membrane, containing at least one basic polymer membrane, is sandwiched between two flat gas diffusion electrodes each of which is loaded with a dopant, whereby after reaching a mass transport equilibrium for the exchange of the dopant between the gas diffusion electrodes and the polymer membrane, the polymer membrane has a conductivity of at least 0.1 S/m at a temperature of no less than 25&#xb0; C.

Membrane-electrode assembly, polymer membranes for a membrane-electrode assembly, polymer electrolyte fuel cells, and methods for the production thereof

A membrane for fuel cells, which is characterized by a homogeneous absorption and good retention of doping agents, and which guarantees a high mechanical stability at high temperatures when doped. Such membranes consist of at least one polymer, whose nitrogen atoms are chemically bonded to a central atom of a derivative of a polybasic inorganic oxo acid. The membranes are produced from polymer solutions that are devoid of water and oxo acid derivatives, by heating the solution that has been introduced into a membrane mold until a self-supporting membrane has been formed and then by thermally regulating the latter. Inventive fuel cells having a membrane electrode assembly (MEA) that comprises a membrane of the invention and phosphoric acid as the doping agent have, for example, an impedance of 0.5-1 &#x3a9;cmat a measuring frequency of 1000 Hz and at an operating temperature of 160&#xb0; C. and a gas flow for hydrogen of 170 mL/min and for air of 570 mL/min. They can be used as high-temperature polyelectrolyte membrane fuel cells for a working temperature of up to at least 250&#xb0; C.

Membranes for fuel cells, method for producing said membranes and production of fuel cells using membranes of this type

A proton-conducting electrolyte membrane is disclosed, comprising at least one base material and at least one dopant, which is the reaction product of an at least dibasic inorganic acid with an organic compound, comprising one acidic hydroxyl group, or the condensation product of said compound with a polybasic acid. The membrane may be produced by a single step method, which avoids the use of dangerous materials and environmental pollutants. Subsequent doping of the membrane, e.g., in conjunction with assembly of the membrane electrode assembly (MEA) is not excluded. The electrolyte membrane has a high and constant mechanical stability and flexibility, excellent chemical and thermal stability and a high and constant conductivity. The membrane may be used in a fuel cell in a wide temperature range from 50&#xb0; C. to more than 200&#xb0; C., for example, whereby the fuel cell has a high and constant power level over the entire temperature range.

Proton-conducting electrolyte membrane method for production and use thereof in a fuel cell

A membrane electrode assembly (MEA) for a fuel cell, which has a planar polymer membrane. This membrane, in a tangentially inner area, is coated on both sides with electrode structure, and, in a tangentially outer area projecting at least on one side beyond the electrode structure coating, is connected to a sealing member. A marginal zone of the polymer membrane is embedded in the elastomer sealing member. The sealing member extends tangentially inward to a transition area that lies tangentially between the outer area and the inner area, where it overlaps the electrode structures on outer faces of the electrode structures, on both of the sides of the polymer membrane.

Membrane electrode assembly for a fuel cell

Growing community of inventors

Dassel, Germany

Suzana Kiel