Patents by Inventor Friedhelm Eisenbeiss

Friedhelm Eisenbeiss has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Miniaturized analytical system
    Publication number: 20050077175
    Abstract: The present invention relates to a process for producing a microstructured analytical system including providing at least two plastic components, wetting at least one component, aligning the components, pressing and joining the components together and curing an adhesive.
    Type: Application
    Filed: December 1, 2004
    Publication date: April 14, 2005
    Inventors: Friedhelm Eisenbeiss, Bernd Stanislawski, Thomas Greve, Renate Bender, Roland Hergenroder, Gunther Weber, Benedikt Grass, Andreas Neyer, Matthias Johnck, Dirk Siepe
  • Method for producing bead polymers
    Patent number: 6492471
    Abstract: A continuous process for the preparation of inorganic and organic bead polymers using a static micromixer is disclosed. The bead polymers obtainable by the process according to the invention have a very uniform particle size distribution, which can be set in a range of between 0.1 and 300 &mgr;m.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: December 10, 2002
    Assignee: Merck Patent Gesellschaft mit Beschraenkter Haftung
    Inventors: Friedhelm Eisenbeiss, Joachim Kinkel, Hans-Daniel-Jakob Müller
  • Modified chromatographic support materials
    Patent number: 6074555
    Abstract: The invention relates to improved chromatographic support materials, to the preparation thereof and to the use thereof as sorbent for chromatography. The particles of these materials have hydrophobic surfaces consisting of fatty acid esters in the pores and hydrophilic outer surfaces. The materials according to the invention permit direct separation of protein-containing samples by means of reverse phase methods.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: June 13, 2000
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Karl Siegfried Boos, Andreas Walfort, Friedhelm Eisenbeiss, Dieter Lubda
  • Chromatography column cartridge system
    Patent number: 5194225
    Abstract: A chromatography column cartridge system comprised of an internal pressure-stable precision glass tube which can be filled with adsorbent and an external protection and/or temperature control jacket with column connection parts which can be screwed on. The column connection parts comprise a union nut which is screwed onto the protection and/or temperature control jacket. The union nut contains a milled nut and a plunger which seals the glass tube radially. Feed and discharge lines for the mobile phase pass through the column connection parts.
    Type: Grant
    Filed: August 30, 1988
    Date of Patent: March 16, 1993
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Werner Muller, Friedhelm Eisenbeiss, Jochen Kinkel, Helmut Kohl
  • Chromatography column
    Patent number: 4280905
    Abstract: A chromatography column adapted for high pressure chromatography is characterized by a tubular membrane separating a glass tube from the pressurized area between the glass tube and a pressure tube adapted to receive a pressurizing fluid. Changing of the glass tube is facilitated by annular seals at each end of the glass tube against which an adjustable threaded plug, fitted in one of a pair of screw caps fitted on each end of the pressure tube, exerts sealing pressure.
    Type: Grant
    Filed: July 29, 1980
    Date of Patent: July 28, 1981
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Werner Gunkel, Friedhelm Eisenbeiss