Patents by Inventor Roger S. Lasken

Roger S. Lasken 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: 9487823
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a complex nucleic acid sample such as genomic samples using one, a few, or more primers such that, during replication, the replicated strands are displaced from the nucleic acid molecules in the sample by strand displacement replication of another replicated strand. It was discovered that highly complex nucleic acid samples can be efficiently amplified using only one or a few primers having specific nucleic acid sequences. The one or few primers are complementary to nucleic acid sequences distributed throughout nucleic acid in the sample.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: November 8, 2016
    Assignee: QIAGEN GMBH
    Inventors: Roger S. Lasken, Michael Egholm, Osama A. Alsmadi
  • Publication number: 20080128298
    Abstract: Disclosed are compositions and methods for amplification of nucleic acid sequences of interest. It has been discovered that amplification reactions can produce amplification products of high quality, such as low amplification bias, if performed on an amount of nucleic acid at or over a threshold amount and/or on nucleic acids at or below a threshold concentration. The threshold amount and concentration can vary depending on the nature and source of the nucleic acids to be amplified and the type of amplification reaction employed. Disclosed is a method of determining the threshold amount and/or threshold concentration of nucleic acids that can be used with nucleic acid samples of interest in amplification reactions of interest. Because amplification reactions can produce high quality amplification products, such as low bias amplification products, below the threshold amount and/or concentration of nucleic acid, such below-threshold amounts and/or concentrations can be used in amplification reactions.
    Type: Application
    Filed: October 12, 2007
    Publication date: June 5, 2008
    Inventors: Carole Bornarth, Michele Wisniewski, Seiyu Hosono, Arumugham Raghunathan, Roger S. Lasken
  • Patent number: 7297485
    Abstract: Disclosed are compositions and methods for amplification of nucleic acid sequences of interest. It has been discovered that amplification reactions can produce amplification products of high quality, such as low amplification bias, if performed on an amount of nucleic acid at or over a threshold amount and/or on nucleic acids at or below a threshold concentration. The threshold amount and concentration can vary depending on the nature and source of the nucleic acids to be amplified and the type of amplification reaction employed. Disclosed is a method of determining the threshold amount and/or threshold concentration of nucleic acids that can be used with nucleic acid samples of interest in amplification reactions of interest. Because amplification reactions can produce high quality amplification products, such as low bias amplification products, below the threshold amount and/or concentration of nucleic acid, such below-threshold amounts and/or concentrations can be used in amplification reactions.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: November 20, 2007
    Assignee: QIAGEN GmbH
    Inventors: Carole Bornarth, Michele Wisniewski, Seiyu Hosono, Arumugham Raghunathan, Roger S. Lasken
  • Patent number: 7074600
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be ?29 DNA polymerase.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: July 11, 2006
    Assignee: Qiagen GmbH
    Inventors: Frank B. Dean, Roger S. Lasken, Linhua Fang, A. Fawad Faruqi, Osama A. Alsmadi, Mark D. Driscoll, Seiyu Hosono, Michele Wisniewski, Wanmin Song
  • Patent number: 6977148
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be ?29 DNA polymerase.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: December 20, 2005
    Assignee: Qiagen GmbH
    Inventors: Frank B. Dean, Roger S. Lasken, Linhua Fang, A. Fawad Faruqi, Osama A. Alsmadi, Mark D. Driscoll, Seiyu Hosono
  • Publication number: 20040161742
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be &phgr;29 DNA polymerase.
    Type: Application
    Filed: October 15, 2001
    Publication date: August 19, 2004
    Inventors: Frank B. Dean, Roger S. Lasken, Linhua Fang, A. Fawad Faruqi, Osama A. Alsmadi, Mark D. Driscoll, Seiyu Hosono
  • Publication number: 20040126764
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a complex nucleic acid sample such as genomic samples using one, a few, or more primers such that, during replication, the replicated strands are displaced from the nucleic acid molecules in the sample by strand displacement replication of another replicated strand. It was discovered that highly complex nucleic acid samples can be efficiently amplified using only one or a few primers having specific nucleic acid sequences. The one or few primers are complementary to nucleic acid sequences distributed throughout nucleic acid in the sample.
    Type: Application
    Filed: December 20, 2002
    Publication date: July 1, 2004
    Inventors: Roger S. Lasken, Michael Egholm, Osama A. Alsmadi
  • Publication number: 20030228613
    Abstract: Disclosed are compositions and methods for amplification of nucleic acid sequences of interest. It has been discovered that amplification reactions can produce amplification products of high quality, such as low amplification bias, if performed on an amount of nucleic acid at or over a threshold amount and/or on nucleic acids at or below a threshold concentration. The threshold amount and concentration can vary depending on the nature and source of the nucleic acids to be amplified and the type of amplification reaction employed. Disclosed is a method of determining the threshold amount and/or threshold concentration of nucleic acids that can be used with nucleic acid samples of interest in amplification reactions of interest. Because amplification reactions can produce high quality amplification products, such as low bias amplification products, below the threshold amount and/or concentration of nucleic acid, such below-threshold amounts and/or concentrations can be used in amplification reactions.
    Type: Application
    Filed: May 2, 2003
    Publication date: December 11, 2003
    Inventors: Carole Bornarth, Michele Wisniewski, Seiyu Hosono, Arumugham Raghunathan, Roger S. Lasken
  • Publication number: 20030207267
    Abstract: Processes for the amplification of target DNA sequences in the form of single or double stranded circular DNA molecules, especially those present in colony and plaque extracts, using multiple specific and/or random sequence oligonucleotide primers are disclosed along with methods for detecting such amplified target sequences. A kit containing components for use in the invention is also described.
    Type: Application
    Filed: July 31, 2001
    Publication date: November 6, 2003
    Inventors: Roger S. Lasken, Frank B. Dean, John Nelson
  • Patent number: 6617137
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be &phgr;29 DNA polymerase.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: September 9, 2003
    Assignee: Molecular Staging Inc.
    Inventors: Frank B. Dean, Roger S. Lasken
  • Publication number: 20030143587
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be &phgr;29 DNA polymerase.
    Type: Application
    Filed: October 15, 2002
    Publication date: July 31, 2003
    Applicant: Molecular Staging, Inc.
    Inventors: Frank B. Dean, Roger S. Lasken, Linhua Fang, A. Fawad Faruqi, Osama A. Alsmadi, Mark D. Driscoll, Seiyu Hosono, Michele Wisniewski, Wanmin Song
  • Publication number: 20030118998
    Abstract: Disclosed are compositions and a method for amplification of nucleic acid sequences of interest. The disclosed method generally involves replication of a target sequence such that, during replication, the replicated strands are displaced from the target sequence by strand displacement replication of another replicated strand. In one form of the disclosed method, the target sample is not subjected to denaturing conditions. It was discovered that the target nucleic acids, genomic DNA, for example, need not be denatured for efficient multiple displacement amplification. The primers used can be hexamer primers. The primers can also each contain at least one modified nucleotide such that the primers are nuclease resistant. The primers can also each contain at least one modified nucleotide such that the melting temperature of the primer is altered relative to a primer of the same sequence without the modified nucleotide(s). The DNA polymerase can be &phgr;29 DNA polymerase.
    Type: Application
    Filed: October 18, 2001
    Publication date: June 26, 2003
    Inventors: Frank B. Dean, Roger S. Lasken
  • Patent number: 6323009
    Abstract: Processes for the amplification of target DNA sequences in the form of single or double stranded circular DNA molecules, especially those present in colony and plaque extracts, using multiple specific and/or random sequence oligonucleotide primers are disclosed along with methods for detecting such amplified target sequences. A kit containing components for use in the invention is also described.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: November 27, 2001
    Assignee: Molecular Staging, Inc.
    Inventors: Roger S. Lasken, Frank B. Dean, John Nelson
  • Patent number: H1531
    Abstract: The invention relates to a substantially pure thermostable DNA polymerase. Preferably, the DNA polymerase has a molecular weight of about 95 kilodaltons and is more thermostable than Taq DNA polymerase. The present invention also relates to cloning and expression of the DNA polymerase in E. coli, to DNA molecules containing the cloned gene, and to host cells which express said genes.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: May 7, 1996
    Inventors: Ilse I. Blumentals, Roger S. Lasken, Brian J. Schmidt, Mary C. Longo, A. John Hughes, Jr., Deb K. Chatterjee