Patents by Inventor Mark A. Danielsen

Mark A. Danielsen 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: 10246739
    Abstract: The present invention relates to a novel method for detecting a target polynucleotide having a target sequence, comprising hybridizing the target polynucleotide with a probe to form a hybrid; exposing the hybrid to a 5? exonuclease so that the probe in the hybrid is digested and the target polynucleotide is dissociated from the digested probe; repeating the hybridization step and the digestion step; and detecting the digested probes. The presence of the digested probes indicates the presence of the target polynucleotide.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 2, 2019
    Assignee: GEORGETOWN UNIVERSITY
    Inventors: Mark Danielsen, Berenice Alfonso, Bolor Tumurpurev
  • Patent number: 10023905
    Abstract: The present invention relates to a novel method for detecting a target polynucleotide having a target sequence, comprising (a) exposing the target polynucleotide to an initiating oligonucleotide; (b) extending the initiating oligonucleotide with an extended sequence complementary to the target sequence; (c) ligating the initiating oligonucleotide sequence with the extended sequence to form a circular oligonucleotide having a nicking endonuclease (NE) recognition/cutting sequence; (d) exposing the circular oligonucleotide to a DNA polymerase and a DNA synthesis primer to synthesize DNA having a NE recognition sequence; (e) exposing the synthesized DNA to a probe having the NE recognition/cutting sequence to form a double stranded DNA having a full NE site; (f) exposing the double stranded DNA to a nicking endonuclease (NE) to cleave the probe; and (g) detecting the cleaved probe. The presence of the cleaved probe indicates the presence of the target polynucleotide.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: July 17, 2018
    Assignee: Georgetown University
    Inventors: Mark Danielsen, Berenice Alfonso, Bolor Tumurpurev
  • Patent number: 9562258
    Abstract: A method for detecting the presence of a target nucleotide sequence in a sample of DNA is described herein in which a test sample comprising single stranded DNA is exposed to a DNA probe and a nicking endonuclease under conditions that would permit sequence-specific hybridization of the probe to a complementary target sequence. The probe comprises a sequence complementary to the target sequence to be detected and this sequence also includes a recognition sequence for the nicking endonuclease. If the sample contains the target sequence, the probe hybridizes to the target and is cleaved by the nicking endonuclease, which leaves the target intact. Observing the presence of probe cleaved by the nicking endonuclease indicates the presence of the target nucleotide sequence in the sample of DNA.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: February 7, 2017
    Assignee: Georgetown University
    Inventors: Mark Danielsen, Joel Credle, Eugene A. Davidson, Kenneth L. Dretchen
  • Patent number: 9012142
    Abstract: A method for detecting the presence of a target nucleotide sequence in a sample of DNA is described herein in which a test sample comprising single stranded DNA is exposed to a DNA probe and a nicking endonuclease under conditions that would permit sequence-specific hybridization of the probe to a complementary target sequence. The probe comprises a sequence complementary to the target sequence to be detected and this sequence also includes a recognition sequence for the nicking endonuclease. If the sample contains the target sequence, the probe hybridizes to the target and is cleaved by the nicking endonuclease, which leaves the target intact. Observing the presence of probe cleaved by the nicking endonuclease indicates the presence of the target nucleotide sequence in the sample of DNA.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: April 21, 2015
    Assignee: Georgetown University
    Inventors: Mark Danielsen, Eugene A. Davidson, Kenneth L. Dretchen, Traci K. Pals
  • Publication number: 20140349285
    Abstract: The present invention relates to a novel method for detecting a target polynucleotide having a target sequence, comprising (a) exposing the target polynucleotide to an initiating oligonucleotide; (b) extending the initiating oligonucleotide with an extended sequence complementary to the target sequence; (c) ligating the initiating oligonucleotide sequence with the extended sequence to form a circular oligonucleotide having a nicking endonuclease (NE) recognition/cutting sequence; (d) exposing the circular oligonucleotide to a DNA polymerase and a DNA synthesis primer to synthesize DNA having a NE recognition sequence; (e) exposing the synthesized DNA to a probe having the NE recognition/cutting sequence to form a double stranded DNA having a full NE site; (f) exposing the double stranded DNA to a nicking endonuclease (NE) to cleave the probe; and (g) detecting the cleaved probe. The presence of the cleaved probe indicates the presence of the target polynucleotide.
    Type: Application
    Filed: March 14, 2014
    Publication date: November 27, 2014
    Applicant: GEORGETOWN UNIVERSITY
    Inventors: Mark Danielsen, Berenice Alfonso, Bolor Tumurpurev
  • Publication number: 20140349286
    Abstract: The present invention relates to a novel method for detecting a target polynucleotide having a target sequence, comprising hybridizing the target polynucleotide with a probe to form a hybrid; exposing the hybrid to a 5? exonuclease so that the probe in the hybrid is digested and the target polynucleotide is dissociated from the digested probe; repeating the hybridization step and the digestion step; and detecting the digested probes. The presence of the digested probes indicates the presence of the target polynucleotide.
    Type: Application
    Filed: March 14, 2014
    Publication date: November 27, 2014
    Applicant: GEORGETOWN UNIVERSITY
    Inventors: Mark Danielsen, Berenice Alfonso, Bolor Tumurpurev
  • Publication number: 20140256577
    Abstract: A method for detecting the presence of a target nucleotide sequence in a sample of DNA is described herein in which a test sample comprising single stranded DNA is exposed to a DNA probe and a nicking endonuclease under conditions that would permit sequence-specific hybridization of the probe to a complementary target sequence. The probe comprises a sequence complementary to the target sequence to be detected and this sequence also includes a recognition sequence for the nicking endonuclease. If the sample contains the target sequence, the probe hybridizes to the target and is cleaved by the nicking endonuclease, which leaves the target intact. Observing the presence of probe cleaved by the nicking endonuclease indicates the presence of the target nucleotide sequence in the sample of DNA.
    Type: Application
    Filed: February 3, 2014
    Publication date: September 11, 2014
    Applicant: Georgetown University
    Inventors: Mark DANIELSEN, Joel Credle, Eugene A. Davidson, Kenneth L. Dretchen
  • Publication number: 20120065088
    Abstract: A method for detecting the presence of a target nucleotide sequence in a sample of DNA is described herein in which a test sample comprising single stranded DNA is exposed to a DNA probe and a nicking endonuclease under conditions that would permit sequence-specific hybridization of the probe to a complementary target sequence. The probe comprises a sequence complementary to the target sequence to be detected and this sequence also includes a recognition sequence for the nicking endonuclease. If the sample contains the target sequence, the probe hybridizes to the target and is cleaved by the nicking endonuclease, which leaves the target intact. Observing the presence of probe cleaved by the nicking endonuclease indicates the presence of the target nucleotide sequence in the sample of DNA.
    Type: Application
    Filed: February 23, 2010
    Publication date: March 15, 2012
    Applicant: Georgetown University
    Inventors: Mark Danielsen, Joel Credle, Eugene A. Davidson, Kenneth L. Dretchen
  • Patent number: 8109522
    Abstract: A stabilizer bar system that includes a first stabilizer bar, a second stabilizer bar and a clutch having a clutch housing and a plurality of coupling members housed in the clutch housing. The first stabilizer bar is received in the clutch housing for rotation relative to the clutch housing about a rotational axis. The second stabilizer bar is fixedly coupled to the clutch housing. The coupling members are configured to selectively non-rotatably couple the first stabilizer bar to the clutch housing such that the clutch housing is employed to transmit torque between the first and second stabilizer bars.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: February 7, 2012
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Andrew F. Pinkos, Todd M. York, Curt D. Gilmore, Gary A. Oliveira, Mark A. Danielsen
  • Publication number: 20110123980
    Abstract: A method for detecting the presence of a target nucleotide sequence in a sample of DNA is described herein in which a test sample comprising single stranded DNA is exposed to a DNA probe and a nicking endonuclease under conditions that would permit sequence-specific hybridization of the probe to a complementary target sequence. The probe comprises a sequence complementary to the target sequence to be detected and this sequence also includes a recognition sequence for the nicking endonuclease. If the sample contains the target sequence, the probe hybridizes to the target and is cleaved by the nicking endonuclease, which leaves the target intact. Observing the presence of probe cleaved by the nicking endonuclease indicates the presence of the target nucleotide sequence in the sample of DNA.
    Type: Application
    Filed: February 15, 2006
    Publication date: May 26, 2011
    Applicant: GEORGETOWN UNIVERSITY
    Inventors: Mark Danielsen, Eugene A. Davidson, Kenneth L. Dretchen, Traci L. Pals
  • Publication number: 20110101631
    Abstract: A stabilizer bar system that includes a first stabilizer bar, a second stabilizer bar and a clutch having a clutch housing and a plurality of coupling members housed in the clutch housing. The first stabilizer bar is received in the clutch housing for rotation relative to the clutch housing about a rotational axis. The second stabilizer bar is fixedly coupled to the clutch housing. The coupling members are configured to selectively non-rotatably couple the first stabilizer bar to the clutch housing such that the clutch housing is employed to transmit torque between the first and second stabilizer bars.
    Type: Application
    Filed: January 6, 2011
    Publication date: May 5, 2011
    Inventors: Andrew F. Pinkos, Todd M. York, Curt D. Gilmore, Gary A. Oliveira, Mark A. Danielsen
  • Patent number: 7909339
    Abstract: A vehicle stabilizer bar assembly having a pair of stabilizer bar members that are selectively uncoupled via a clutch. The clutch includes a moving element that can be selectively moved via an actuator to effect the uncoupling of the stabilizer bar members. The actuator is configured to apply a force to the moving element concentrically about the axis along which the moving element translates. The clutch is configured to transmit torque from one of the stabilizer bar members to the other stabilizer bar member concentrically about the axis. A method for operating a vehicle stabilizer bar assembly is also provided.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: March 22, 2011
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Andrew F. Pinkos, Todd M. York, Curt D. Gilmore, Gary A. Oliveira, Mark A. Danielsen
  • Publication number: 20110006493
    Abstract: A vehicle stabilizer bar assembly having a pair of stabilizer bar members that are selectively uncoupled via a clutch. The clutch includes a moving element that can be selectively moved via an actuator to effect the uncoupling of the stabilizer bar members. The actuator is configured to apply a force to the moving element concentrically about the axis along which the moving element translates. The clutch is configured to transmit torque from one of the stabilizer bar members to the other stabilizer bar member concentrically about the axis. A method for operating a vehicle stabilizer bar assembly is also provided.
    Type: Application
    Filed: September 21, 2010
    Publication date: January 13, 2011
    Inventors: Andrew F. Pinkos, Todd M. York, Curt D. Gilmore, Gary A. Oliveira, Mark A. Danielsen
  • Patent number: 7832739
    Abstract: A vehicle stabilizer bar assembly having a pair of stabilizer bar members that are selectively uncoupled via a clutch. The clutch includes a moving element that can be selectively moved via an actuator to effect the uncoupling of the stabilizer bar members. The actuator is configured to apply a force to the moving element concentrically about the axis along which the moving element translates. The clutch is configured to transmit torque from one of the stabilizer bar members to the other stabilizer bar member concentrically about the axis. A method for operating a vehicle stabilizer bar assembly is also provided.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: November 16, 2010
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Andrew F. Pinkos, Todd M. York, Curt D. Gilmore, Gary A. Oliveira, Mark A. Danielsen
  • Publication number: 20080106055
    Abstract: A vehicle stabilizer bar assembly having a pair of stabilizer bar members that are selectively uncoupled via a clutch. The clutch includes a moving element that can be selectively moved via an actuator to effect the uncoupling of the stabilizer bar members. The actuator is configured to apply a force to the moving element concentrically about the axis along which the moving element translates. The clutch is configured to transmit torque from one of the stabilizer bar members to the other stabilizer bar member concentrically about the axis. A method for operating a vehicle stabilizer bar assembly is also provided.
    Type: Application
    Filed: October 29, 2007
    Publication date: May 8, 2008
    Inventors: Andrew F. Pinkos, Todd M. York, Curt D. Gilmore, Gary A. Oliveira, Mark A. Danielsen
  • Patent number: 6093133
    Abstract: The present invention provides a means to learn and accommodate the amount of air that needs to be purged from a clutch circuit after being off for a predetermined time. The scheme helps to maintain proper control timing as necessary for good shift quality and clutch durability and further helps to minimize unnecessary delays in clutch application. Once the air has been purged, then normal control timing can be resumed.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: July 25, 2000
    Assignee: DaimlerChrysler Corporation
    Inventors: Mark A. Danielsen, Hussein A. Dourra, Gerald L. Holbrook