Patents by Inventor Holger Wedler

Holger Wedler 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: 10501783
    Abstract: The present invention relates to methods and uses for the detection or quantification of newly-synthesized double-stranded target nucleic acid molecules in a sample during quantitative real-time polymerase chain reaction (qPCR) amplification. According to the invention, an intercalating dye recognizing double-stranded DNA molecules with higher affinity than single-stranded DNA molecules and a fluorophore-labeled oligonucleotide-probe being sequence specific for a target nucleic acid molecule are simultaneously employed, thus enabling quantification a specific target and total amount of a mixed nucleic acid population, and enabling assessing the cause of suboptimal PCR performance.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: December 10, 2019
    Assignee: QIAGEN GMBH
    Inventors: Nan Fang, Andreas Missel, Katja Heitz, Holger Wedler
  • Publication number: 20160298182
    Abstract: The present invention relates to methods and uses for the detection or quantification of newly-synthesized double-stranded target nucleic acid molecules in a sample during quantitative real-time polymerase chain reaction (qPCR) amplification. According to the invention, an intercalating dye recognizing double-stranded DNA molecules with higher affinity than single-stranded DNA molecules and a fluorophore-labeled oligonucleotide-probe being sequence specific for a target nucleic acid molecule are simultaneously employed, thus enabling quantification a specific target and total amount of a mixed nucleic acid population, and enabling assessing the cause of suboptimal PCR performance.
    Type: Application
    Filed: December 9, 2014
    Publication date: October 13, 2016
    Inventors: Nan Fang, Andreas Missel, Katja Heitz, Holger Wedler
  • Patent number: 9458452
    Abstract: The invention relates to a chromatographic device for isolating and/or purifying double-stranded nucleic acids, preferably double-stranded DNA, from a mixture of such nucleic acids with single-stranded nucleic acids, oligonucleotides, mononucleotides, salts and/or other such impurities. The invention also relates to a method for chromatographically isolating and/or purifying same, and to a kit for this purpose.
    Type: Grant
    Filed: November 8, 2011
    Date of Patent: October 4, 2016
    Assignee: QIAGEN GmbH
    Inventors: Thorsten Singer, Holger Wedler
  • Publication number: 20150141258
    Abstract: The invention relates to a method for enriching one or more target sequences of a deoxyribonucleic acid (DNA) in a composition, comprising the steps of providing a composition comprising one or more deoxyribonucleic acid (DNA) molecules, hybridizing to said one or more DNA molecules, one or more target specific ribonucleic acid (RNA) hybridization probes, thereby forming one or more RNA/DNA hybrids, capturing the RNA/DNA hybrids with one or more antibodies being specific for such RNA/DNA hybrids, thereby forming one or more RNA/DNA/antibody hybrids, isolating the one or more RNA/DNA/antibody hybrids, amplifying the one or more DNA molecules of the one or more RNA/DNA/antibody hybrids if necessary, and, optionally, sequencing the one or more DNA molecules of the one or more RNA/DNA/antibody hybrids or the amplification product, wherein the sequencing is preferably done by means of next generation sequencing.
    Type: Application
    Filed: April 29, 2013
    Publication date: May 21, 2015
    Inventors: Holger Wedler, Erika Wedler, Dirk Loeffert, Dominic O'Neil
  • Publication number: 20140336058
    Abstract: The invention relates to a method for determining the sequence and/or quantity of a ribonucleic acid in a composition, comprising the steps of: i. providing a composition comprising one or more ribonucleic acids molecules (RNA), ii. hybridizing to said one or more RNAs, one or more two-part nucleic acid hybridization probes, wherein each probe comprises, a. a first nucleic acid molecule with a 3?-tail wherein said tail does not hybridize to an RNA in the composition, b. a second nucleic acid molecule with a 5?-tail wherein said tail does not hybridize to an RNA in the composition, c. wherein said first and said second nucleic acid molecules when and if hybridized to their target RNA lie on one single stranded RNA molecule separated from each other by between 2 and 1000 nucleotides, iii.
    Type: Application
    Filed: November 30, 2012
    Publication date: November 13, 2014
    Inventors: Erika Wedler, Holger Wedler
  • Patent number: 8816063
    Abstract: The present invention relates to a method for purifying a defined amount of nucleic acids from a nucleic acid-containing sample, which has at least the following steps: (a.) contacting the nucleic acid-containing sample with a defined amount of a nucleic acid binding phase with the following features: (i) the nucleic acid binding phase has nucleic acid binding ligands that have at least one protonatable group; (ii) the nucleic acid binding ligands are bound to a carrier; (iii) the nucleic acid binding phase has a surface with a low charge density, wherein the amount of nucleic acids in the sample exceeds the binding capacity of the amount of nucleic acid binding phase used; (b.) binding of the nucleic acids to the nucleic acid binding phase at a pH (binding pH) that is below the pKs value of at least one of the protonatable groups; (c.) elution of the nucleic acids at a pH that is above the binding pH, wherein a defined amount of nucleic acids is obtained.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: August 26, 2014
    Assignee: Qiagen GmbH
    Inventors: Jan Petzel, Holger Wedler, Roland Fabis
  • Publication number: 20130237699
    Abstract: The invention relates to a chromatographic device for isolating and/or purifying double-stranded nucleic acids, preferably double-stranded DNA, from a mixture of such nucleic acids with single-stranded nucleic acids, oligonucleotides, mononucleotides, salts and/or other such impurities. The invention also relates to a method for chromatographically isolating and/or purifying same, and to a kit for this purpose.
    Type: Application
    Filed: November 8, 2011
    Publication date: September 12, 2013
    Applicant: QIAGEN GmbH
    Inventors: Thorsten Singer, Holger Wedler
  • Publication number: 20120077969
    Abstract: The present invention relates to a method for purifying a defined amount of nucleic acids from a nucleic acid-containing sample, which has at least the following steps: (a.) contacting the nucleic acid-containing sample with a defined amount of a nucleic acid binding phase with the following features: (i) the nucleic acid binding phase has nucleic acid binding ligands that have at least one protonatable group; (ii) the nucleic acid binding ligands are bound to a carrier; (iii) the nucleic acid binding phase has a surface with a low charge density, wherein the amount of nucleic acids in the sample exceeds the binding capacity of the amount of nucleic acid binding phase used; (b.) binding of the nucleic acids to the nucleic acid binding phase at a pH (binding pH) that is below the pKs value of at least one of the protonatable groups; (c.) elution of the nucleic acids at a pH that is above the binding pH, wherein a defined amount of nucleic acids is obtained.
    Type: Application
    Filed: May 11, 2010
    Publication date: March 29, 2012
    Applicant: QIAGEN GMBH
    Inventors: Jan Petzel, Holger Wedler, Roland Fabis