Sartorius Ag

Sartorius

Sartorius Stedim Biotech Gmbh

Dietmar Nussbaumer

Wolfgang Demmer

Eberhard Wunn

Horst Perl

Abdul R Weiss

Hans-Heinrich Hörl

Horst Kluver

Hans-Weddo Schmidt

Hans Beer

Khuong To Vinh

Khuong T Vinh

Maria-Regina Kula

Ulrich Grummert

Andreas Graus

Gunter Pradel

Eberhard Wuenn

Andreas Kocourek

Edwige Bonfils

Daniel Dupret

Dieter Melzner

Stefan Fischer-Fruehholz

Thang Thuong Nguyen

Khoung To Vinh

Hans-Heinrich H&ouml;rl

G&uuml;nter Pradel

Elmar Herbig

Jorg Thoemmes

Heinrich Klaus Gebauer

The invention comprises a membrane and device and method for removing proteases from fluids, particularly from biological fluids and pharmaceutical solutions, which uses a microporous membrane body, whereby inhibitors that selectively bind proteases are coupled to the membrane body by chemically activated groups.

Membrane for removing proteases from liquids

Membrane, device and method for removing proteases from liquids

There is disclosed a process for the production of cellulose hydrate ultrafiltration membranes having improved filtration performance and the ultrafiltration membranes produced by the process.

Cellulose hydrate ultrafiltration membranes and method for their production

The present invention relates to adsorption membranes comprising microporous polymer membranes in which adsorbent particles are incorporated. Furthermore, the present invention relates to a method of producing the inventive adsorption membranes as well as devices which comprise the inventive adsorption membranes.

Adsorption membranes, method of producing same and equipment, including the adsorption membranes

There is disclosed a device for the simultaneous separation of particles and target substances from liquid feeds by adsorption membranes having particle-passing apertures therein.

Adsorptive membrane device for treating particle-laden liquid feeds

A method of conducting a rapid microbiological assay of gases is disclosed that utilizes an improved gelatin membrane filter that is pre-filtered before casting to remove microscopic-sized particles.

Method for detecting microorganisms in gases

The abstract discloses a method for preparing supports for the assay of chemical or biological substances, consisting in preparing N different supports, each being homogeneous for a type of reaction, then in mutually combining, according to a predetermined arrangement, all or part of the said homogenous N supports to constitute assay supports having each an ordered set of reaction zones of N different types or less. The invention also concerns the assay supports prepared by this method and their use in processes of immunological hybridisation assays.

Method for preparing assay supports having an ordered set of reaction zones

An adsorptive separation device is disclosed having at least one spiral wound adsorption membrane situated around the periphery of a core mandrel wherein the flow is radial from a feed plenum situated between the core mandrel and the membrane, through the membrane to a permeate plenum located between the membrane and a housing for both the core mandrel and the spiral wound membrane. An array of such separation devices is also disclosed showing connections in parallel, in series, in both parallel and in series and in tandem.

Adsorptive substance separation device

Adsorptive separation is performed on liquid media by directing the media containing a target substance through an adsorber stage A whereby the target substance is adsorbed; in the last phase of loading stage A and prior to breakthrough of the target substance in the stage A permeate, the stage A permeate is directed to a second adsorber stage B. Upon completion of the stage A loading, the target substance from stage A is eluted with buffer solution, which buffer solution is introduced to stage B, and liquid medium is directed to the preloaded stage A, while stage A is eluted so as both recover the target substance and regenerate the adsorptive capacity of stage A.

Tandem system for adsorptive separation

Devices suitable for adsorptive separation, filtration or catalytic conversion of liquid media are disclosed that have ideal dimensions for efficient performance. A method for dimensioning such devices is also disclosed.

Fluid treatment device with tangential ducts and method for dimensioning the device

There is disclosed a membrane process for the purification of nucleic acids in aqueous solutions whereby a lasting reduction of endotoxin content is achieved. The process is suitable for small or large volumes and can be carried out quickly and with simple apparatus.

Process for the purification of nucleic acids

A filtration unit for the separation of substances from liquids utilizes a rotatable cylindrical module with a permeable wall disposed within a housing. A filter element which has at least one band of microporous membrane adsorber having a specific adsorption affinity for the substances to be separated is disposed within the cylindrical module so that the membrane absorber is abutted to the cylindrical module. The filter element encircles the feed inlet and can be in the form of an endless loop. A permeate plenum lies between the cylindrical module and the housing. The cylindrical module includes a liquid impermeable end cap which is provided with a coupling member adapted for connection to a drive of variable rotational speed.

Centrifugal filtration onto membrane adsorbers

A method of separating albumin from serum by ion exchange chromatography with membrane adsorbers characterized by high productivity and yields of high purity albumin. The separation of the albumin is carried out on highly basic anion exchange membranes and on highly acidic cation exchange membranes. The albumin fraction can be eluted from the anion exchange membrane such that it can be fed directly to the cation exchange membrane without any special conditioning and the albumin can be extracted therefrom as an end product.

Method of separating albumin from serum by ion-exchange chromatography

A process for cross-linking a cellulose hydrate membrane by use of a water-soluble diepoxide in an alkaline solution. The membrane so produced is highly resistant to attack by alkalis, acids and cellulases, and is readily regenerable by alkaline cleaning.

Cross-linked cellulose hydrate membranes

A dead-end filtration unit without a housing comprising at least one filter cassette, each cassette comprising a plurality of laminar sections of porous adsorptive membrane, which have been rendered fluid-impermeable on their peripheries, the cassettes being sealingly compressed between two filter retainers fitted with feed inlet and permeate outlet and wherein the laminar sections are made of the same or different membrane adsorber types.

Growing community of inventors

Göttingen, Germany

Dietmar Nussbaumer