Patents by Inventor Junfei Xia

Junfei Xia 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: 20250020629
    Abstract: Semiconductor devices can include features to apply electrical stimulation to liquids in which material is present and to measure the response to the electrical stimulation.
    Type: Application
    Filed: July 10, 2024
    Publication date: January 16, 2025
    Inventors: Phillip Michel Nadeau, David Duncan Lloyd, Michael C.W. Coln, Roman Trogan, Junfei Xia, Marek Hempel, Chen Yang, Ramji Sitaraman Lakshmanan
  • Publication number: 20250012758
    Abstract: The present disclosure provides methods and systems for reducing interference by one or more bubbles in a sensing assembly by determining a first property of the solution and using the first property in a removal step.
    Type: Application
    Filed: July 7, 2023
    Publication date: January 9, 2025
    Inventors: Alfonso BERDUQUE, Alan Odonnell, Simone Mullins, Joyce Wu, Junfei Xia, Richard Doyle, Donal MCAULIFFE
  • Publication number: 20250012759
    Abstract: The present disclosure provides methods and systems for reducing interference by one or more bubbles in a sensing assembly. Bubble prevention arrangements can use surfaces located in a fluid channel to provide surfaces with higher affinity for bubbles relative to the other surfaces so that the surface retains one or more bubbles within a bubble collection region; and/or to divert at least a portion of any bubbles passing through an opening in the fluid channel. Additionally or alternatively, bubble prevention arrangements comprise an agitation device configured to agitate liquid within the fluid channel. Additionally or alternatively, bubble prevention arrangements are configured to displace one or more bubbles in a region on or adjacent the sensing surface so as to reduce interference of one or more bubbles on the sensing surface.
    Type: Application
    Filed: July 2, 2024
    Publication date: January 9, 2025
    Inventors: Alfonso Berduque, Alan O'Donnell, Simone Mullins, Joyce Wu, Junfei Xia, Richard Doyle
  • Publication number: 20240369508
    Abstract: A sensor assembly for determining a property of an analyte in a sample, where a modification unit comprising a set of modification electrodes with at least a first modification electrode is provided adjacent or on a sensing element, which includes a capture species, and which modification unit is configured modify a property of at least a portion of a sample received on the sensing element.
    Type: Application
    Filed: May 4, 2023
    Publication date: November 7, 2024
    Inventors: Helen BERNEY, Youri Victorovitch PONOMAREV, Junfei XIA, Christophe ANTOINE, Richard DOYLE
  • Publication number: 20240369510
    Abstract: Methods and systems for determining a property of an analyte in a sample, wherein a field is applied to a sensing surface to cause an analyte to debind from a surface, and subsequently the field is modified or removed to allow the analyte to rebind.
    Type: Application
    Filed: May 4, 2023
    Publication date: November 7, 2024
    Inventors: Youri Victorovitch PONOMAREV, Helen BERNEY, Junfei XIA
  • Publication number: 20240328988
    Abstract: The present disclosure provides sensor assemblies comprising a plurality of mixing species provided adjacent or on the sensing surface, wherein each mixing species comprises a polynucleotide chain and wherein each mixing species is anchored to the sensor assembly; and an actuation unit configured to move at least a part of each mixing species in a plurality of directions. Alternatively or additionally, the polynucleotide chain comprises DNA and has a length of at least 10 nm.
    Type: Application
    Filed: March 31, 2023
    Publication date: October 3, 2024
    Inventors: Joyce WU, Junfei XIA, Helen BERNEY, David Duncan LLOYD
  • Publication number: 20240138730
    Abstract: An oxygen sensor for sensing dissolved oxygen concentration in tissue includes an electrochemical sensor comprising first and second conductive threads having proximal sections connected to a potentiostat. The first thread forms a cathode, and the second thread forms an anode.
    Type: Application
    Filed: March 4, 2022
    Publication date: May 2, 2024
    Inventors: Sameer Sonkusale, Junfei Xia, Francois Dufay
  • Patent number: 11547358
    Abstract: An oxygen sensor for sensing dissolved oxygen concentration in tissue includes an electrochemical sensor comprising first and second conductive threads having proximal sections connected to a potentiostat. The first thread forms a cathode, and the second thread forms an anode.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: January 10, 2023
    Assignees: Trustees of Tufts College, DTAMedical
    Inventors: Sameer Sonkusale, Junfei Xia, Francois Dufay
  • Publication number: 20220283113
    Abstract: An oxygen sensor for sensing dissolved oxygen concentration in tissue includes an electrochemical sensor comprising first and second conductive threads having proximal sections connected to a potentiostat. The first thread forms a cathode, and the second thread forms an anode.
    Type: Application
    Filed: December 8, 2021
    Publication date: September 8, 2022
    Inventors: Sameer Sonkusale, Junfei Xia, Francois Dufay