Assignee
QIAGEN GMBH
US153 patents
Top patents by PatentIndex Score
US6277648B1Aug 21, 2001
Process and a device for the isolation of cell components such as nucleic acids from natural sources
QIAGEN GMBH124 citations99
US5990301ANov 23, 1999
Process for the separation and purification of nucleic acids from biological sources
QIAGEN GMBH157 citations98
US5747663AMay 5, 1998
Process for the depletion or removal of endotoxins
QIAGEN GMBH110 citations98
US6733777B2May 11, 2004
Cationic reagents of transfection
QIAGEN GMBH89 citations97
US6383393B1May 7, 2002
Chromatographic purification and separation process for mixtures of nucleic acids
QIAGEN GMBH173 citations97
US6180778B1Jan 30, 2001
Process for the separation of double-stranded/single-stranded nucleic acid structures
QIAGEN GMBH148 citations97
US6020186AFeb 1, 2000
Device and process for isolating nucleic acids from cell suspensions
QIAGEN GMBH126 citations97
US7270953B2Sep 18, 2007
Compositions for isolating and/or stabilising nucleic acids in biological material
QIAGEN GMBH60 citations96
US6977148B2Dec 20, 2005
Multiple displacement amplification
QIAGEN GMBH276 citations96
US6977153B2Dec 20, 2005
Rolling circle amplification of RNA
QIAGEN GMBH102 citations96
US6274371B1Aug 14, 2001
Process and device for the isolation of cell components, such as nucleic acids, from natural sources
QIAGEN GMBH59 citations96
US7297485B2Nov 20, 2007
Method for nucleic acid amplification that results in low amplification bias
QIAGEN GMBH328 citations95
US7005266B2Feb 28, 2006
Nucleic acid isolation from stool samples and other inhibitor-rich biological materials
QIAGEN GMBH50 citations95
US6992182B1Jan 31, 2006
Method for isolating DNA from biological materials
QIAGEN GMBH70 citations95
US6586585B1Jul 1, 2003
Method for the size reduction of high-molecular structures
QIAGEN GMBH62 citations95
US6297371B1Oct 2, 2001
Process for the preparation of endotoxin-free or endotoxin-depleted nucleic acids and/or oligonucleotides for gene therapy
QIAGEN GMBH41 citations95
US7285331B1Oct 23, 2007
Ultraphobic surface
QIAGEN GMBH52 citations94
US7074600B2Jul 11, 2006
Amplification of denatured and stabilized nucleic acids
QIAGEN GMBH81 citations94
US6300069B1Oct 9, 2001
Generation and amplification of nucleic acids from ribonucleic acids
QIAGEN GMBH54 citations94
US7648824B2Jan 19, 2010
Method of sequencing DNA
QIAGEN GMBH53 citations93
US7358047B2Apr 15, 2008
Methods of forming circular nucleic acid probes and uses thereof
QIAGEN GMBH115 citations93
US7109322B2Sep 19, 2006
Process for the depletion or removal of endotoxins
QIAGEN GMBH18 citations92
US6609618B2Aug 26, 2003
Device for the isolation of cell components such as nucleic acids from natural sources
QIAGEN GMBH19 citations92
US6150094ANov 21, 2000
Use of an osmolyte for reducing or abolishing no-covalent interactions of biological molecules to inert surfaces
QIAGEN GMBH30 citations92
US5792651AAug 11, 1998
Enhancement of the transfection efficiency of nucleic acids by using isopropanol in aqueous solutions
QIAGEN GMBH38 citations92
US7955795B2Jun 7, 2011
Method of whole genome amplification with reduced artifact production
QIAGEN GMBH22 citations91
US7683035B1Mar 23, 2010
Method of stabilizing and/or isolating nucleic acids
QIAGEN GMBH40 citations91
US7682790B2Mar 23, 2010
Compositions for the isolation and/or stabilization of nucleic acids in biological materials
QIAGEN GMBH18 citations91
US7553619B2Jun 30, 2009
Detection method using dissociated rolling circle amplification
QIAGEN GMBH27 citations91
US7183002B2Feb 27, 2007
Porous ferro- or ferrimagnetic glass particles for isolating molecules
QIAGEN GMBH17 citations91
US7074916B2Jul 11, 2006
Process for the separation of double-stranded/single-stranded nucleic acid structures
QIAGEN GMBH37 citations91
US7041480B2May 9, 2006
Generation of single-strand circular DNA from linear self-annealing segments
QIAGEN GMBH20 citations91
US6946250B2Sep 20, 2005
Process for the separation of double-stranded/single-stranded nucleic acid structures
QIAGEN GMBH15 citations91
US6723510B2Apr 20, 2004
Methods for separating particulate substrates from solution while minimizing particle loss
QIAGEN GMBH59 citations91
US10740883B2Aug 11, 2020
Background compensation
QIAGEN GMBH23 citations89
US6864100B1Mar 8, 2005
Automated protein purification the multiwell format by vacuum filtration
QIAGEN GMBH41 citations89
US6821757B2Nov 23, 2004
Rapid and simple process for isolation of circular nucleic acids
QIAGEN GMBH34 citations89
US7838233B2Nov 23, 2010
Method for the treatment of a sample containing biomolecules
QIAGEN GMBH15 citations88
US6921642B2Jul 26, 2005
Protein expression profiling
QIAGEN GMBH36 citations88
US5795720AAug 18, 1998
Process and device for the separation and detection of components of a mixture of materials by temperature gradient gel electrophoresis
QIAGEN GMBH37 citations88
US6861213B2Mar 1, 2005
Use of compositions consisting of cationic compounds and proton donors for stabilizing and/or isolating nucleic acids in or from micro-organisms such as prokaryots, fungi, protozoa or algae
QIAGEN GMBH25 citations86
US6315902B1Nov 13, 2001
Device for selectively filtering under reduced pressure and for vacuum drying sample liquids or drops of sample liquids
QIAGEN GMBH20 citations86
US6258930B1Jul 10, 2001
Process and apparatus for breaking down biological material
QIAGEN GMBH36 citations86
US6242220B1Jun 5, 2001
Method for purifying covalently closed circular DNA
QIAGEN GMBH25 citations84
US8043834B2Oct 25, 2011
Universal reagents for rolling circle amplification and methods of use
QIAGEN GMBH23 citations83
USD977143SJan 31, 2023
Reagent cartridge
QIAGEN GMBH8 citations81
US8372637B2Feb 12, 2013
Method for stabilising a biological sample
QIAGEN GMBH17 citations81
US7888006B2Feb 15, 2011
Method for isolating DNA from biological samples
QIAGEN GMBH15 citations81
US6553824B1Apr 29, 2003
Method for determining pipetted volumes of liquid
QIAGEN GMBH13 citations80
US10724074B2Jul 28, 2020
Stabilisation of biological samples
QIAGEN GMBH5 citations79
Showing the top 50 of 153 patents by PatentIndex Score.