Patents by Inventor Christoph Ritt

Christoph Ritt 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).

  • Patent number: 10738069
    Abstract: The invention relates to a method and kits for isolating and/or purifying nucleic acids, in particular, short-chain nucleic acids, from a nucleic acid containing starting material, characterised by the following method steps: (a) bonding the nucleic acids to a nucleic acid bonding support material, wherein the starting material is brought into contact with the nucleic acid bonding support material in the presence of at least one chaotropic compound and preferably isopropanol, wherein the isopropanol is present in a concentration of ?15% (v/v) and ?35% (v/v), (b) optional elution of the bonded nucleic acids from the nucleic acid bonding support material. Said method is particularly suitable for the purification of foetal DNA from maternal blood.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: August 11, 2020
    Assignee: QIAGEN GmbH
    Inventors: Christoph Ritt, Martin Horlitz, Markus Sprenger-Haussels
  • Publication number: 20180244707
    Abstract: The invention relates to a method and kits for isolating and/or purifying nucleic acids, in particular, short-chain nucleic acids, from a nucleic acid containing starting material, characterised by the following method steps: (a) bonding the nucleic acids to a nucleic acid bonding support material, wherein the starting material is brought into contact with the nucleic acid bonding support material in the presence of at least one chaotropic compound and preferably isopropanol, wherein the isopropanol is present in a concentration of ?15% (v/v) and ?35% (v/v), (b) optional elution of the bonded nucleic acids from the nucleic acid bonding support material. Said method is particularly suitable for the purification of foetal DNA from maternal blood.
    Type: Application
    Filed: October 3, 2017
    Publication date: August 30, 2018
    Inventors: Christoph Ritt, Martin Horlitz, Markus Sprenger-Haussels
  • Patent number: 9809612
    Abstract: The invention relates to a method and kits for isolating and/or purifying nucleic acids, in particular, short-chain nucleic acids, from a nucleic acid containing starting material, characterized by the following method steps: (a) bonding the nucleic acids to a nucleic acid bonding support material, wherein the starting material is brought into contact with the nucleic acid bonding support material in the presence of at least one chaotropic compound and preferably isopropanol, wherein the isopropanol is present in a concentration of ?15% (v/v) and ?35% (v/v), (b) optional elution of the bonded nucleic acids from the nucleic acid bonding support material. Said method is particularly suitable for the purification of foetal DNA from maternal blood.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: November 7, 2017
    Assignee: QIAGEN GmbH
    Inventors: Christoph Ritt, Martin Horlitz, Markus Sprenger-Haussels
  • Patent number: 9790250
    Abstract: The invention relates to a method and kits for isolating and/or purifying nucleic acids, in particular, short-chain nucleic acids, from a nucleic acid containing starting material, characterized by the following method steps: (a) bonding the nucleic acids to a nucleic acid bonding support material, wherein the starting material is brought into contact with the nucleic acid bonding support material in the presence of at least one chaotropic compound and preferably isopropanol, wherein the isopropanol is present in a concentration of ?25% (v/v) and ?35% (v/v), (b) optional elution of the bonded nucleic acids from the nucleic acid bonding support material. Said method is particularly suitable for the purification of foetal DNA from maternal blood.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: October 17, 2017
    Assignee: QIAGEN GmbH
    Inventors: Christoph Ritt, Martin Horlitz, Markus Sprenger-Haussels
  • Patent number: 9017557
    Abstract: The present invention concerns new monolithic shaped bodies, a method for their preparation as well as their use especially for the selective purification and separation of biopolymers. A chromatographic separation material is provided with the new monolithic shaped bodies that allows a selective, efficient and reproducible purification and separation of biopolymers.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: April 28, 2015
    Assignee: Qiagen GmbH
    Inventors: Christoph Erbacher, Christoph Ritt, Markus Kirchmann
  • Patent number: 8460941
    Abstract: The present invention is related to a method for isolating a target nucleic acid from a sample comprising said target nucleic acid, comprising the steps of mixing a sample containing said target nucleic acid with a binding solution and a nucleic acid binding matrix, binding at least part of said target nucleic acid to said nucleic acid binding matrix, wherein said nucleic acid binding matrix is treated simultaneously or has been previously treated with at least one compound comprising a metal substance selected from the group consisting of metals of the main groups 13 to 16, semimetals and transition metals for reducing non-target nucleic acid contaminations or wherein said nucleic acid binding matrix is modified with hydrophobic groups. Furthermore, respective kits and reagents are provided with the teaching of the present invention.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: June 11, 2013
    Assignee: Qiagen GmbH
    Inventors: Christoph Ritt, Christoph Erbacher, Patrick Baumhof
  • Publication number: 20120283426
    Abstract: The present invention is related to a method for isolating a target nucleic acid from a sample comprising said target nucleic acid, comprising the steps of mixing a sample containing said target nucleic acid with a binding solution and a nucleic acid binding matrix, binding at least part of said target nucleic acid to said nucleic acid binding matrix, wherein said nucleic acid binding matrix is treated simultaneously or has been previously treated with at least one compound comprising a metal substance selected from the group consisting of metals of the main groups 13 to 16, semimetals and transition metals for reducing non-target nucleic acid contaminations or wherein said nucleic acid binding matrix is modified with hydrophobic groups. Furthermore, respective kits and reagents are provided with the teaching of the present invention.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 8, 2012
    Applicant: QIAGEN GMBH
    Inventors: Christoph RITT, Christoph ERBACHER, Patrick BAUMHOF
  • Patent number: 8206990
    Abstract: The present invention is related to a method for isolating a target nucleic acid from a sample comprising said target nucleic acid, comprising the steps of mixing a sample containing said target nucleic acid with a binding solution and a nucleic acid binding matrix, binding at least part of said target nucleic acid to said nucleic acid binding matrix, wherein said nucleic acid binding matrix is treated simultaneously or has been previously treated with at least one compound comprising a metal substance selected from the group consisting of metals of the main groups 13 to 16, semimetals and transition metals for reducing non-target nucleic acid contaminations or wherein said nucleic acid binding matrix is modified with hydrophobic groups. Furthermore, respective kits and reagents are provided with the teaching of the present invention.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: June 26, 2012
    Assignee: Qiagen GmbH
    Inventors: Christoph Ritt, Christoph Erbacher, Patrick Baumhof
  • Patent number: 8202427
    Abstract: Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules; under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use for identifying or separating molecules of interest are also described. Kits comprising the porous, ferro- or ferrimagnetic, glass particles are also provided.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: June 19, 2012
    Assignee: Qiagen GmbH
    Inventors: Philippe Sauer, Bernd Springer, Thomas Manz, Christoph Ritt, Roland Fabis
  • Publication number: 20110186524
    Abstract: Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules; under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use for identifying or separating molecules of interest are also described. Kits comprising the porous, ferro- or ferrimagnetic, glass particles are also provided.
    Type: Application
    Filed: February 24, 2011
    Publication date: August 4, 2011
    Inventors: Philippe Sauer, Bernd Springer, Thomas Manz, Christoph Ritt, Roland Fabis
  • Patent number: 7977109
    Abstract: The present invention relates to a method for enriching nucleic acids with a length of not more than 300 nucleotides. The invention also relates to a kit for enriching nucleic acids with a length of not more than 300 nucleotides, to the use of such a kit, to the use of an anion exchange matrix and to a method for treating a disease.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: July 12, 2011
    Assignee: Qiagen GmbH
    Inventors: Christoph Ritt, Ralf Himmelreich, Martin Weber
  • Publication number: 20110160446
    Abstract: The invention relates to a method and kits for isolating and/or purifying nucleic acids, in particular, short-chain nucleic acids, from a nucleic acid containing starting material, characterised by the following method steps: (a) bonding the nucleic acids to a nucleic acid bonding support material, wherein the starting material is brought into contact with the nucleic acid bonding support material in the presence of at least one chaotropic compound and preferably isopropanol, wherein the isopropanol is present in a concentration of ?25% (v/v) and ?35% (v/v), (b) optional elution of the bonded nucleic acids from the nucleic acid bonding support material. Said method is particularly suitable for the purification of foetal DNA from maternal blood.
    Type: Application
    Filed: May 12, 2009
    Publication date: June 30, 2011
    Applicant: Qiagen GmbH
    Inventors: Christoph Ritt, Martin Horlitz, Markus Sprenger-Haussels
  • Publication number: 20110130558
    Abstract: The invention relates to a method and kits for isolating and/or purifying nucleic acids, in particular, short-chain nucleic acids, from a nucleic acid containing starting material, characterised by the following method steps: (a) bonding the nucleic acids to a nucleic acid bonding support material, wherein the starting material is brought into contact with the nucleic acid bonding support material in the presence of at least one chaotropic compound and preferably isopropanol, wherein the isopropanol is present in a concentration of ?15% (v/v) and ?35% (v/v), (b) optional elution of the bonded nucleic acids from the nucleic acid bonding support material.
    Type: Application
    Filed: May 12, 2009
    Publication date: June 2, 2011
    Applicant: Qiagen GmbH
    Inventors: Christoph Ritt, Martin Horlitz, Markus Sprenger-Haussels
  • Patent number: 7922917
    Abstract: Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules, under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use for identifying or separating molecules of interest are also described. Kits comprising the porous, ferro- or ferrimagnetic, glass particles are also provided.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: April 12, 2011
    Assignee: QIAGEN GmbH
    Inventors: Philippe Sauer, Bernd Springer, Thomas Manz, Christoph Ritt, Roland Fabis
  • Publication number: 20100056769
    Abstract: The present invention is related to a method for isolating a target nucleic acid from a sample comprising said target nucleic acid, comprising the steps of mixing a sample containing said target nucleic acid with a binding solution and a nucleic acid binding matrix, binding at least part of said target nucleic acid to said nucleic acid binding matrix, wherein said nucleic acid binding matrix is treated simultaneously or has been previously treated with at least one compound comprising a metal substance selected from the group consisting of metals of the main groups 13 to 16, semimetals and transition metals for reducing non-target nucleic acid contaminations or wherein said nucleic acid binding matrix is modified with hydrophobic groups. Furthermore, respective kits and reagents are provided with the teaching of the present invention.
    Type: Application
    Filed: October 10, 2007
    Publication date: March 4, 2010
    Applicant: QIAGEN GMBH
    Inventors: Christoph Ritt, Christoph Erbacher, Patrick Baumhof
  • Publication number: 20090081802
    Abstract: The present invention relates to a method for enriching nucleic acids with a length of not more than 300 nucleotides The invention also relates to a kit for enriching nucleic acids with a length of not more than 300 nucleotides, to the use of such a kit, to the use of an anion exchange matrix and to a method for treating a disease.
    Type: Application
    Filed: December 8, 2006
    Publication date: March 26, 2009
    Applicant: QIAGEN GmbH
    Inventors: Christoph Ritt, Ralf Himmelreich, Martin Weber
  • Publication number: 20090062522
    Abstract: The present invention concerns new monolithic shaped bodies, a method for their preparation as well as their use especially for the selective purification and separation of biopolymers. A chromatographic separation material is provided with the new monolithic shaped bodies that allows a selective, efficient and reproducible purification and separation of biopolymers.
    Type: Application
    Filed: July 27, 2005
    Publication date: March 5, 2009
    Inventors: Christoph Erbacher, Christoph Ritt, Markus Kirchmann
  • Publication number: 20070080316
    Abstract: Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules, under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use for identifying or separating molecules of interest are also described. Kits comprising the porous, ferro- or ferrimagnetic, glass particles are also provided.
    Type: Application
    Filed: December 7, 2006
    Publication date: April 12, 2007
    Inventors: Philippe Sauer, Bernd Springer, Thomas Manz, Christoph Ritt, Roland Fabis
  • Patent number: 7183002
    Abstract: Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules, under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use of identifying or separating molecules of interest are also described. Kits comprising the porous, ferro- or ferrimagnetic, glass particles are also provided.
    Type: Grant
    Filed: March 22, 2001
    Date of Patent: February 27, 2007
    Assignee: Qiagen, GmbH
    Inventors: Philippe Sauer, Bernd Springer, Thomas Manz, Christoph Ritt, Roland Fabis
  • Publication number: 20030148101
    Abstract: Porous, ferro- or ferrimagnetic, glass particles are described that selectively bind molecules of interest, especially nucleic acid molecules, under appropriate conditions. Methods of preparing the porous, ferro- or ferrimagnetic, glass particles and their use of identifying or separating molecules of interest are also described. Kits comprising the porous, ferro- or ferrimagnetic, glass particles are also provided.
    Type: Application
    Filed: January 25, 2003
    Publication date: August 7, 2003
    Inventors: Philippe Sauer, Bernd Springer, Thomas Manz, Christoph Ritt, Roland Fabis