Patents by Inventor Katrin Köhler

Katrin Köhler 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).

  • Integrity and functionality test for adsorptive depth filter layers with an inorganic layered double hydroxide
    Patent number: 10386285
    Abstract: The present invention relates to a method for determining the functionality and integrity of depth filter sheets and depth filter sheet systems comprising inorganic layered double hydroxide for contaminant removal in biotechnological processes.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: August 20, 2019
    Assignee: Sartorius Stedim Biotech GMBH
    Inventors: Rebecca Petersen, Axel Thiefes, Katrin Köhler, Wolfgang Demmer, Sven Dankenbrink
  • Integrity and Functionality Test for Adsorptive Depth Filter Layers with an Inorganic Layered Double Hydroxide
    Publication number: 20160274019
    Abstract: The present invention relates to a method for determining the functionality and integrity of depth filter sheets and depth filter sheet systems comprising inorganic layered double hydroxide for contaminant removal in biotechnological processes.
    Type: Application
    Filed: September 3, 2014
    Publication date: September 22, 2016
    Inventors: Rebecca Petersen, Axel Thiefes, Katrin Köhler, Wolfgang Demmer, Sven Dankenbrink
  • Imidazolium salts that can be immobilized
    Publication number: 20070021615
    Abstract: The invention relates to novel immobilisable imidazolium salts of the general formulae (I) and (II) which contain a group R carrying SiR?n(OR?)3?n on one of the two nitrogen atoms and a sterically demanding cyclic hydrocarbon radical on the other of the two nitrogen atoms of the heterocyclic ring. The invention furthermore relates to the use of the compounds of the general formulae (I) and (II) as starting materials for immobilisable catalyst ligands, catalyst precursors and catalysts, and to the use as solvents in organic, organometallic and transition metal-catalysed synthesis and as catalysts in organic synthesis.
    Type: Application
    Filed: July 14, 2004
    Publication date: January 25, 2007
    Inventors: Katrin Köhler, Kerstin Weigl
  • Catalyst system for the Ziegler-Natta polymerization of olefins
    Patent number: 6534606
    Abstract: Described are catalyst systems having aluminium alkyl complexes of the formula (I) described herein applied to magnesium chloride, SiO2 or SiO2 in combination with MgCl2 as support in the presence of titanium halides or vanadium halides and internal and, if desired, external donors act both as cocatalysts and as stereoselectivity promoters in heterogeneous polymerizations of &agr;-olefins. Also described are polymerization methods using these catalyst systems.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: March 18, 2003
    Assignee: Merck Patent Gesellschaft Mit Beschränkter Haftung
    Inventors: Katrin Köhler, Eike Poetsch, Herbert Schumann, Sebastian Dechert, Walter Kaminsky, Andre Laban, Manfred Arnold, Jana Knorr, Birgit Corinna Wassermann