Patents by Inventor Hesaam Esfandyarpour

Hesaam Esfandyarpour 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).

  • Publication number: 20160077049
    Abstract: A sensing apparatus for sensing target materials including biological or chemical molecules in a fluid. One such apparatus includes a semiconductor-on-insulator (SOI) structure having an electrically-insulating layer, a fluidic channel supported by the SOI structure and configured and arranged to receive and pass a fluid including the target materials, and a semiconductor device including at least three electrically-contiguous semiconductor regions doped to exhibit a common polarity. The semiconductor regions include a sandwiched region sandwiched between two of the other semiconductor regions, and configured and arranged adjacent to the fluidic channel with a surface directed toward the fluidic channel for coupling to the target materials in the fluidic channel, and further arranged for responding to a bias voltage. The sensing apparatus also includes an amplification circuit in or on the SOI and that is arranged to facilitate sensing of the target material near the fluidic channel.
    Type: Application
    Filed: November 9, 2015
    Publication date: March 17, 2016
    Inventors: Kosar Baghbani-Parizi, Yoshio Nishi, Hesaam Esfandyarpour
  • Publication number: 20160076097
    Abstract: A method comprises magnetically holding a bead carrying biological material (e.g., nucleic acid, which may be in the form of DNA fragments or amplified DNA) in a specific location of a substrate, and applying an electric field local to the bead to isolate the biological material or products or byproducts of reactions of the biological material. For example, the bead isolated from other beads having associated biological material. The electric field in various embodiments concentrates reagents for an amplification or sequencing reaction, and/or concentrates and isolates detectable reaction by-products. For example, by isolating nucleic acids around individual beads, the electric field can allow for clonal amplification, as an alternative to emulsion PCR. In other embodiments, the electric field isolates a nanosensor proximate to the bead, to facilitate detection of at least one of local pH change, local conductivity change, local charge concentration change and local heat.
    Type: Application
    Filed: September 21, 2015
    Publication date: March 17, 2016
    Inventors: Hesaam Esfandyarpour, Mark F. Oldham, Kosar Baghbani Parizi, Eric S. Nordman
  • Patent number: 9274077
    Abstract: The invention relate to systems and methods for sequencing polynucleotides, as well as detecting reactions and binding events involving other biological molecules. The systems and methods may employ chamber-free devices and nanosensors to detect or characterize such reactions in high-throughput. Because the system in many embodiments is reusable, the system can be subject to more sophisticated and improved engineering, as compared to single use devices.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 1, 2016
    Assignee: GENAPSYS, INC.
    Inventors: Hesaam Esfandyarpour, Kosar Baghbani Parizi, Mark F. Oldham, Eric S. Nordman, Richard T. Reel, Susanne Baumhueter, Cheryl Heiner, Frank Lee
  • Publication number: 20150376692
    Abstract: Provided herein are devices and methods suitable for sequencing, amplifying, analyzing, and performing sample preparation procedures for nucleic acids and other biomolecules.
    Type: Application
    Filed: March 14, 2014
    Publication date: December 31, 2015
    Inventors: Hesaam ESFANDYARPOUR, Hamid RATEGH, Meysam R. BARMI, Kosar B. PARIZI, Kambiz KAVIANI
  • Publication number: 20150368707
    Abstract: A method comprises magnetically holding a bead carrying biological material (e.g., nucleic acid, which may be in the form of DNA fragments or amplified DNA) in a specific location of a substrate, and applying an electric field local to the bead to isolate the biological material or products or byproducts of reactions of the biological material. For example, the bead is isolated from other beads having associated biological material. The electric field in various embodiments concentrates reagents for an amplification or sequencing reaction, and/or concentrates and isolates detectable reaction by-products. For example, by isolating nucleic acids around individual beads, the electric field can allow for clonal amplification, as an alternative to emulsion PCR. In other embodiments, the electric field isolates a nanosensor proximate to the bead, to facilitate detection of at least one of local pH change, local conductivity change, local charge concentration change and local heat.
    Type: Application
    Filed: August 25, 2015
    Publication date: December 24, 2015
    Inventors: Hesaam Esfandyarpour, Mark Oldham
  • Patent number: 9187783
    Abstract: A method comprises magnetically holding a bead carrying biological material (e.g., nucleic acid, which may be in the form of DNA fragments or amplified DNA) in a specific location of a substrate, and applying an electric field local to the bead to isolate the biological material or products or byproducts of reactions of the biological material. For example, the bead is isolated from other beads having associated biological material. The electric field in various embodiments concentrates reagents for an amplification or sequencing reaction, and/or concentrates and isolates detectable reaction by-products. For example, by isolating nucleic acids around individual beads, the electric field can allow for clonal amplification, as an alternative to emulsion PCR. In other embodiments, the electric field isolates a nanosensor proximate to the bead, to facilitate detection of at least one of local pH change, local conductivity change, local charge concentration change and local heat.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: November 17, 2015
    Assignee: GENAPSYS, INC.
    Inventors: Hesaam Esfandyarpour, Mark F. Oldham, Eric S. Nordman, Kosar Baghbani Parizi
  • Patent number: 9184099
    Abstract: A sensing apparatus for sensing target materials including biological or chemical molecules in a fluid. One such apparatus includes a semiconductor-on-insulator (SOI) structure having an electrically-insulating layer, a fluidic channel supported by the SOI structure and configured and arranged to receive and pass a fluid including the target materials, and a semiconductor device including at least three electrically-contiguous semiconductor regions doped to exhibit a common polarity. The semiconductor regions include a sandwiched region sandwiched between two of the other semiconductor regions, and configured and arranged adjacent to the fluidic channel with a surface directed toward the fluidic channel for coupling to the target materials in the fluidic channel, and further arranged for responding to a bias voltage. The sensing apparatus also includes an amplification circuit in or on the SOI and that is arranged to facilitate sensing of the target material near the fluidic channel.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: November 10, 2015
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Kosar Baghbani-Parizi, Yoshio Nishi, Hesaam Esfandyarpour
  • Patent number: 9150915
    Abstract: A method comprises magnetically holding a bead carrying biological material (e.g., nucleic acid, which may be in the form of DNA fragments or amplified DNA) in a specific location of a substrate, and applying an electric field local to the bead to isolate the biological material or products or byproducts of reactions of the biological material. For example, the bead is isolated from other beads having associated biological material. The electric field in various embodiments concentrates reagents for an amplification or sequencing reaction, and/or concentrates and isolates detectable reaction by-products. For example, by isolating nucleic acids around individual beads, the electric field can allow for clonal amplification, as an alternative to emulsion PCR. In other embodiments, the electric field isolates a nanosensor proximate to the bead, to facilitate detection of at least one of local pH change, local conductivity change, local charge concentration change and local heat.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: October 6, 2015
    Assignee: GENAPSYS, INC.
    Inventors: Hesaam Esfandyarpour, Mark Oldham
  • Publication number: 20150258544
    Abstract: The present disclosure provides microfluidic devices, systems and methods for sample preparation and/or analysis. A microfluidic device can include a first channel having a sequence of (n) chambers each having a first volume (v). The first channel can include one or more valves at opposing ends of the first channel that fluidically isolate the first channel. The microfluidic device can further include a second channel in fluid communication with the first channel. The second channel can include at least one second chamber having a total second volume that is at least equal to the total volume of the first channel (n*v). The second channel can include one or more valves at opposing ends of the second channel that fluidically isolate the second channel from the first channel.
    Type: Application
    Filed: March 12, 2015
    Publication date: September 17, 2015
    Inventors: Seth Stern, Hesaam Esfandyarpour, David Eberhart
  • Publication number: 20150148264
    Abstract: A method comprises magnetically holding a bead carrying biological material (e.g., nucleic acid, which may be in the form of DNA fragments or amplified DNA) in a specific location of a substrate, and applying an electric field local to the bead to isolate the biological material or products or byproducts of reactions of the biological material. For example, the bead is isolated from other beads having associated biological material. The electric field in various embodiments concentrates reagents for an amplification or sequencing reaction, and/or concentrates and isolates detectable reaction by-products. For example, by isolating nucleic acids around individual beads, the electric field can allow for clonal amplification, as an alternative to emulsion PCR. In other embodiments, the electric field isolates a nanosensor proximate to the bead, to facilitate detection of at least one of local pH change, local conductivity change, local charge concentration change and local heat.
    Type: Application
    Filed: January 13, 2015
    Publication date: May 28, 2015
    Inventors: Hesaam Esfandyarpour, Mark Oldham
  • Patent number: 8969002
    Abstract: The present invention provides for methods and systems for Electronic DNA sequencing, single molecule DNA sequencing, and combinations of the above, providing low cost and convenient sequencing.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: March 3, 2015
    Assignee: Genapsys, Inc.
    Inventors: Hesaam Esfandyarpour, Mark Oldham
  • Publication number: 20140329699
    Abstract: The present disclosure relates to systems and methods for high efficiency electronic sequencing of nucleic acids and molecular detection. In an example embodiment of the instant disclosure, the NanoNeedle may be utilized to detect a change in impedance resulting from the modulation of the counter ion concentration or Debye length associated with a biomolecule of interest, such as DNA or protein, for an application of interest, such as DNA sequencing, DNA hybridization, or protein detection.
    Type: Application
    Filed: December 3, 2012
    Publication date: November 6, 2014
    Inventor: Hesaam Esfandyarpour
  • Publication number: 20140235457
    Abstract: The invention relate to systems and methods for sequencing polynucleotides, as well as detecting reactions and binding events involving other biological molecules. The systems and methods may employ chamber-free devices and nanosensors to detect or characterize such reactions in high-throughput. Because the system in many embodiments is reusable, the system can be subject to more sophisticated and improved engineering, as compared to single use devices.
    Type: Application
    Filed: May 29, 2012
    Publication date: August 21, 2014
    Applicant: GENAPSYS, INC.
    Inventors: Hesaam Esfandyarpour, Kosar Baghbani Parazi, Mark F. Oldham, Eric S. Nordman, Richard T. Reel, Susanne Baumhueter, Cheryl Heiner, Frank Lee
  • Patent number: 8696989
    Abstract: A calorimeter device includes various components located on a common substrate. A first (calorimeter) integrated chip device is located on the substrate. This first device has a first microfluidic channel that has first side and a second side. A first heat sensing circuit is located on the first side of the first channel and a second heat sensing circuit is located on the second side of the channel, opposite the first side and facing the first heat sensing circuit. A second integrated chip device is located on the substrate and proximal to the first device. The second device includes a second microfluidic channel having a third side and fourth side. A third heat sensing circuit is located on the third side of the second channel. A fourth heat sensing circuit is located on the fourth side of the channel, opposite the third side and facing the third heat sensing circuit.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 15, 2014
    Assignee: The Board of Trustees of the Leland Stanford Junior Univerity
    Inventors: Hesaam Esfandyarpour, Ronald W. Davis
  • Publication number: 20140073531
    Abstract: In one embodiment, a method is provided for the manufacture of a nano-sensor array. A base having a sensing region is provided along with a plurality of nano-sensors. Each of the plurality of nano-sensors is formed by: forming a first nanoneedle along a surface of the base, forming a dielectric on the first nanoneedle, and forming a second nanoneedle on the dielectric layer. The first nanoneedle of each sensor has a first end adjacent to the sensing region of the base. The second nanoneedle is separated from the first nanoneedle by the dielectric and has a first end adjacent the first end of the first nanoneedle. The base is provided with a fluidic channel. The plurality of nano-sensors and the fluidic channel are configured and arranged with the first ends proximate the fluidic channel to facilitate sensing of targeted matter in the fluidic channel.
    Type: Application
    Filed: November 15, 2013
    Publication date: March 13, 2014
    Applicant: The Board of Trustees of the Leland Stanford Junior University
    Inventor: Hesaam Esfandyarpour
  • Publication number: 20140057339
    Abstract: The invention relate to systems and methods for sequencing polynucleotides, as well as detecting reactions and binding events involving other biological molecules. The systems and methods may employ chamber-free devices and nanosensors to detect or characterize such reactions in high-throughput. Because the system in many embodiments is reusable, the system can be subject to more sophisticated and improved engineering, as compared to single use devices.
    Type: Application
    Filed: March 15, 2013
    Publication date: February 27, 2014
    Applicant: GENAPSYS INC.
    Inventors: Hesaam Esfandyarpour, Kosar Baghbani Parazi, Mark F. Oldham, Eric S. Nordman, Richard T. Reel, Susanne Baumhueter, Cheryl Heiner, Frank Lee
  • Publication number: 20140045701
    Abstract: A method comprises magnetically holding a bead carrying biological material (e.g., nucleic acid, which may be in the form of DNA fragments or amplified DNA) in a specific location of a substrate, and applying an electric field local to the bead to isolate the biological material or products or byproducts of reactions of the biological material. For example, the bead is isolated from other beads having associated biological material. The electric field in various embodiments concentrates reagents for an amplification or sequencing reaction, and/or concentrates and isolates detectable reaction by-products. For example, by isolating nucleic acids around individual beads, the electric field can allow for clonal amplification, as an alternative to emulsion PCR. In other embodiments, the electric field isolates a nanosensor proximate to the bead, to facilitate detection of at least one of local pH change, local conductivity change, local charge concentration change and local heat.
    Type: Application
    Filed: October 4, 2011
    Publication date: February 13, 2014
    Applicant: GENAPSYS INC.
    Inventors: Hesaam Esfandyarpour, Mark F. Oldham, Kosar Parazi, Eric Nordman
  • Patent number: 8585973
    Abstract: In one embodiment, a method is provided for the manufacture of a nano-sensor array. A base having a sensing region is provided along with a plurality of nano-sensors. Each of the plurality of nano-sensors is formed by: forming a first nanoneedle along a surface of the base, forming a dielectric on the first nanoneedle, and forming a second nanoneedle on the dielectric layer. The first nanoneedle of each sensor has a first end adjacent to the sensing region of the base. The second nanoneedle is separated from the first nanoneedle by the dielectric and has a first end adjacent the first end of the first nanoneedle. The base is provided with a fluidic channel. The plurality of nano-sensors and the fluidic channel are configured and arranged with the first ends proximate the fluidic channel to facilitate sensing of targeted matter in the fluidic channel.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: November 19, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventor: Hesaam Esfandyarpour
  • Publication number: 20130096013
    Abstract: The present invention provides for methods and systems for Electronic DNA sequencing, single molecule DNA sequencing, and combinations of the above, providing low cost and convenient sequencing.
    Type: Application
    Filed: October 1, 2012
    Publication date: April 18, 2013
    Applicant: Genapsys, Inc.
    Inventors: Hesaam Esfandyarpour, Mark Oldham, Eric Nordman
  • Publication number: 20130029851
    Abstract: A calorimeter device includes various components located on a common substrate. A first (calorimeter) integrated chip device is located on the substrate. This first device has a first microfluidic channel that has first side and a second side. A first heat sensing circuit is located on the first side of the first channel and a second heat sensing circuit is located on the second side of the channel, opposite the first side and facing the first heat sensing circuit. A second integrated chip device is located on the substrate and proximal to the first device. The second device includes a second microfluidic channel having a fourth side and fifth side. A third heat sensing circuit is located on the third side of the second channel. A fourth heat sensing circuit is located on the fourth side of the channel, opposite the third side and facing the third heat sensing circuit.
    Type: Application
    Filed: May 25, 2012
    Publication date: January 31, 2013
    Inventors: Hesaam Esfandyarpour, Ronald W. Davis