Patents by Inventor Dandan Shan
Dandan Shan 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).
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Publication number: 20220229073Abstract: The present disclosure relates to immunoassays for NF-L performed on liquid samples derived from physiological fluids such as venous blood to detect the presence or absence of a physiological condition by quantifying one or a combination of NF-L determinations at concentrations indicative of the condition.Type: ApplicationFiled: April 9, 2019Publication date: July 21, 2022Applicant: QUANTERIX CORPORATIONInventors: Edward Kevin HRUSOVSKY, David WILSON, Dandan SHAN, Lei CHANG, Linan SONG, Andreas JEROMIN, Carmen Ioana TOBOS, Purvish Prahlad PATEL
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Publication number: 20220050106Abstract: The present disclosure relates to methods and compositions, e.g., kits, for assessing or detecting SARS-CoV-2 antigen(s), e.g., SARS-CoV-2 nucleocapsid protein (N-protein), in a sample or a blood sample, e.g., serum, plasma, dried blood spots (DBS) and/or a saliva sample. Certain applications and uses of the present methods and compositions, e.g., kits, are also provided.Type: ApplicationFiled: August 11, 2021Publication date: February 17, 2022Applicant: Quanterix CorporationInventors: Andrew Ball, Lei Chang, Syrena Fernandes, Kevin Hrusovsky, Joseph Johnson, Dawn Mattoon, Tatiana Plavina, Dandan Shan, David Wilson
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Publication number: 20210102959Abstract: The present disclosure relates to immunoassays for NF-L, GFAP, UCH L1, and Tau performed on liquid samples derived from physiological fluids such as venous blood to detect the presence or absence of a physiological condition by quantifying one or a combination of NF-L, GFAP, UCH L1, and Tau at concentrations indicative of the condition.Type: ApplicationFiled: April 9, 2019Publication date: April 8, 2021Applicant: QUANTERIX CORPORATIONInventors: Edward Kevin HRUSOVSKY, David WILSON, Dandan SHAN, Lei CHANG, Linan SONG, Andreas JEROMIN, Carmen Ioana TOBOS, Purvish Prahlad PATEL
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Publication number: 20210096140Abstract: The present disclosure relates to digital immunoassays performed on diluted samples obtained from dried blood spots, for example dried capillary blood samples, to detect the presence or absence of a physiological condition by quantifying one or a combination of biomarkers at concentrations indicative of the condition.Type: ApplicationFiled: April 9, 2019Publication date: April 1, 2021Applicant: QUANTERIX CORPORATIONInventors: Edward Kevin HRUSOVSKY, David WILSON, Dandan SHAN, Lei CHANG, Linan SONG, Andreas JEROMIN, Carmen Ioana TOBOS, Purvish Prahlad PATEL
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Patent number: 10640814Abstract: Described herein are methods and systems for detecting DNA or RNA using single molecules array or other techniques. DNA or RNA from the sample may be fragmented and exposed to a first type of binding ligand and a second type of binding ligand that comprise nucleic acid sequences complimentary at least a portion of a sequence contained in the target DNA or RNA. At least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand and/or the second type of binding ligand, wherein the first type of binding ligand and second type of binding ligand comprises nucleic acid sequences complimentary to a different portions of a sequence contained in the DNA or RNA. A portion of the sample exposed to the binding ligands is analyzed to determine the number of fragmented DNA or RNA sequences.Type: GrantFiled: March 30, 2018Date of Patent: May 5, 2020Assignee: Quanterix CorporationInventors: David C. Duffy, Linan Song, Dandan Shan, Mingwei Zhao
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Patent number: 10588712Abstract: A compound rotational interface and stepper assembly, the assembly including: a stepper supporting linear, rotational or both linear and rotational motion on a longitudinal axis; a compound rotational interface including a compound pinned parallelogram in a scissor arm arrangement bound by a first end coupled to a base and a second end coupled to a first rotational joint, the first rotational joint coupled to the stepper; the compound pinned parallelogram moveable from a first linear position to a second linear position and the first rotational joint moveable from a first angular position to a second angular position; and a linear direction defined by the compound pinned parallelogram substantially perpendicular to an axis of rotation defined by the first rotational joint.Type: GrantFiled: August 26, 2016Date of Patent: March 17, 2020Assignee: Focal Healthcare Inc.Inventors: Dandan Shan, Jeffrey Bax, Chicuong La
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Publication number: 20180363038Abstract: Described herein are methods and systems for detecting DNA or RNA using single molecules array or other techniques. DNA or RNA from the sample may be fragmented and exposed to a first type of binding ligand and a second type of binding ligand that comprise nucleic acid sequences complimentary at least a portion of a sequence contained in the target DNA or RNA. At least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand and/or the second type of binding ligand, wherein the first type of binding ligand and second type of binding ligand comprises nucleic acid sequences complimentary to a different portions of a sequence contained in the DNA or RNA. A portion of the sample exposed to the binding ligands is analyzed to determine the number of fragmented DNA or RNA sequences.Type: ApplicationFiled: March 30, 2018Publication date: December 20, 2018Applicant: Quanterix CorporationInventors: David C. Duffy, Linan Song, Dandan Shan, Mingwei Zhao
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Patent number: 10066782Abstract: A counterbalance apparatus for supporting a load includes a base, a load bearing arm, a toggle linkage, and first and second resilient members for applying a force to the load bearing arm. The load bearing arm has pivot points forming a parallelogram linkage, and is adapted to support the load at a distal end. The toggle linkage can include an adjustment member positioned to define a distance relative to the attachment point. The first resilient member is adapted to apply a force to the load bearing arm and may have a first end connected to a first portion of the parallelogram linkage and a second end connected to the adjustment member. Movement of the toggle linkage to the load bearing position engages the forces of the resilient members and movement of the adjustment member varies the distance to adjust a support vector adapted to counterbalance the load vector.Type: GrantFiled: January 14, 2015Date of Patent: September 4, 2018Assignees: Centre for Imaging Technology Commercialization (CIMTEC)Inventors: Jeffrey Bax, Dandan Shan, Christopher Waring, Aaron Fenster
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Publication number: 20180243048Abstract: A compound rotational interface and stepper assembly, the assembly including: a stepper supporting linear, rotational or both linear and rotational motion on a longitudinal axis; a compound rotational interface including a compound pinned parallelogram in a scissor arm arrangement bound by a first end coupled to a base and a second end coupled to a first rotational joint, the first rotational joint coupled to the stepper; the compound pinned parallelogram moveable from a first linear position to a second linear position and the first rotational joint moveable from a first angular position to a second angular position; and a linear direction defined by the compound pinned parallelogram substantially perpendicular to an axis of rotation defined by the first rotational joint.Type: ApplicationFiled: August 26, 2016Publication date: August 30, 2018Inventors: Dandan SHAN, Jeffrey BAX, Chicuong LA
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Patent number: 9932626Abstract: Described herein are methods and systems for detecting DNA or RNA using single molecules array or other techniques. DNA or RNA from the sample may be fragmented and exposed to a first type of binding ligand and a second type of binding ligand that comprise nucleic acid sequences complimentary at least a portion of a sequence contained in the target DNA or RNA. At least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand and/or the second type of binding ligand, wherein the first type of binding ligand and second type of binding ligand comprises nucleic acid sequences complimentary to a different portions of a sequence contained in the DNA or RNA. A portion of the sample exposed to the binding ligands is analyzed to determine the number of fragmented DNA or RNA sequences.Type: GrantFiled: January 15, 2014Date of Patent: April 3, 2018Assignee: Quanterix CorporationInventors: David C. Duffy, Linan Song, Dandan Shan, Mingwei Zhao
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Publication number: 20180051850Abstract: Disclosed is a counterbalance apparatus, and a method for counterbalancing using an apparatus, having a center of motion that is internal or external to the apparatus. The apparatus and method are adapted to support a payload, having a load vector applied in a direction of the vector or gravity, that is positioned distal to the center of motion. The apparatus includes a gimbal adapted to support the payload and allow for its rotational movement about the center of motion generating a load torque therefrom, and a resilient member adapted to engage the gimbal and supply a support torque to counterbalance the load torque. The method includes a step of supporting the payload with a gimbal adapted to allow rotational movement of the payload about the center of motion to generate a load torque therefrom, and a step of configuring a resilient member to engage the gimbal and supply a support torque to counterbalance the load torque.Type: ApplicationFiled: March 31, 2015Publication date: February 22, 2018Inventors: Jeffrey BAX, Kevin BARKER, Dandan SHAN, Christopher WARING, Aaron FENSTER
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Publication number: 20180023758Abstract: A counterbalance apparatus for supporting a load includes a base, a load bearing arm, a toggle linkage, and first and second resilient members for applying a force to the load bearing arm. The load bearing arm has pivot points forming a parallelogram linkage, and is adapted to support the load at a distal end. The toggle linkage can include an adjustment member positioned to define a distance relative to the attachment point. The first resilient member is adapted to apply a force to the load bearing arm and may have a first end connected to a first portion of the parallelogram linkage and a second end connected to the adjustment member. Movement of the toggle linkage to the load bearing position engages the forces of the resilient members and movement of the adjustment member varies the distance to adjust a support vector adapted to counterbalance the load vector.Type: ApplicationFiled: January 14, 2015Publication date: January 25, 2018Inventors: Jeffrey BAX, Dandan SHAN, Christopher WARING, Aaron FENSTER
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Publication number: 20150353997Abstract: Described herein are methods and systems for detecting DNA or RNA using single molecules array or other techniques. DNA or RNA from the sample may be fragmented and exposed to a first type of binding ligand and a second type of binding ligand that comprise nucleic acid sequences complimentary at least a portion of a sequence contained in the target DNA or RNA. At least a portion of the fragmented DNA or RNA associates with at least one of the first type of binding ligand and/or the second type of binding ligand, wherein the first type of binding ligand and second type of binding ligand comprises nucleic acid sequences complimentary to a different portions of a sequence contained in the DNA or RNA. A portion of the sample exposed to the binding ligands is analyzed to determine the number of fragmented DNA or RNA sequences.Type: ApplicationFiled: January 15, 2014Publication date: December 10, 2015Applicant: Quanterix CorporationInventors: David C. Duffy, Linan Song, Dandan Shan, Mingwei Zhao