Patents by Inventor Yufeng Ma

Yufeng Ma 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: 20160178649
    Abstract: Biosensors and sensing methods that overcome the disadvantages, poor chemical, physical and long-term stability, hatch to batch variability and high cost sensor of these teachings for detecting and recognizing target molecules includes a capture and release component and a sensing component. The capture release component includes a structure having molecularly imprinted polymer nanoparticles disposed on the structure, the structure being configured to receive a target fluid having the target molecules, the target molecules being captured by one of a molecularly imprinted polymer or molecularly imprinted polymer nanoparticles, and a source of a release solvent configured to release the target molecules captured by the molecularly imprinted polymer nanoparticles, the release solvent and released target molecules constituting a release solution. The sensing component includes a sensor surface having a layer of molecular imprinted polymer disposed on the sensor surface; and a sensing circuit.
    Type: Application
    Filed: October 16, 2015
    Publication date: June 23, 2016
    Inventors: Ranganathan Shashidhar, Yufeng Ma, James A. Kane
  • Patent number: 9347908
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: May 24, 2016
    Assignee: Polestar Technologies, Inc.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Publication number: 20130178095
    Abstract: A pH meter and probe with a screw-down connector that converts a standard BNC pH probe connector into an IP67 waterproof connection.
    Type: Application
    Filed: January 9, 2012
    Publication date: July 11, 2013
    Inventors: Devin Sper, Yufeng Ma
  • Patent number: 8480428
    Abstract: A pH meter and probe with a screw-down connector that converts a standard BNC pH probe connector into an IP67 waterproof connection.
    Type: Grant
    Filed: January 9, 2012
    Date of Patent: July 9, 2013
    Inventors: Devin Sper, Yufeng Ma
  • Publication number: 20130092547
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device.
    Type: Application
    Filed: November 5, 2012
    Publication date: April 18, 2013
    Applicant: POLESTAR TECHNOLOGIES, INC.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Patent number: 8313633
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device formed by the process steps of: (a) fabricating using photolithography a pair of metallic electrodes separated by a microscale gap onto a first electrical insulation layer formed on a substrate; (b) applying a second electrical insulation layer on most of a top surface of said pairs of electrodes; (c) depositing additional metallic electrode material onto said electrode pairs using electrochemical deposition, thereby decreasing said microgap to a nano sized gap between said electrode pairs; (d) electrochemically polymerizing in said nanogap conductive monomers containing a target analyte, thereby forming a conducting polymer nanojunction in the gap between electrode pairs; and (e) immersing resultant sensor device in a solution which removes away the target analyte, and intermittently applying a voltage to the conducting polymer while it is immersed in said solution, thereby swelling and shrinking the co
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: November 20, 2012
    Assignee: Polestar Technologies, Inc.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Publication number: 20110024302
    Abstract: A molecular recognition sensor system is provided incorporating a molecular imprinted nanosensor device formed by the process steps of: (a) fabricating using photolithography a pair of metallic electrodes separated by a microscale gap onto a first electrical insulation layer formed on a substrate; (b) applying a second electrical insulation layer on most of a top surface of said pairs of electrodes; (c) depositing additional metallic electrode material onto said electrode pairs using electrochemical deposition, thereby decreasing said microgap to a nano sized gap between said electrode pairs; (d) electrochemically polymerizing in said nanogap conductive monomers containing a target analyte, thereby forming a conducting polymer nanojunction in the gap between electrode pairs; and (e) immersing resultant sensor device in a solution which removes away the target analyte, and intermittently applying a voltage to the conducting polymer while it is immersed in said solution, thereby swelling and shrinking the co
    Type: Application
    Filed: July 28, 2009
    Publication date: February 3, 2011
    Applicant: POLESTAR TECHNOLOGIES, INC.
    Inventors: Xiulan Li, Ranganathan Shashidhar, Yufeng Ma
  • Patent number: 7871570
    Abstract: The instant application provides a fluidic array device having an elastomeric body that provides easy fluidic control of the device. The elastomeric body may include plurality of intersecting row and column channels. Reactions may occur at the intersection spots formed by the intersecting channels. Pinching applied at suitable locations along the channels enables the channels to be opened or closed, and thus provides control of fluids pumped through the device. The surfaces of the channels and intersection spots may be engineered to have certain properties. In particular, the intersection spots may be nanoengineered to have surface properties differing from those of the channels, and thus reactions may be selectively controlled to occur only, or highly preferentially, in the intersection spots.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: January 18, 2011
    Inventors: Joseph Zhili Huang, Yong Shi, Yufeng Ma
  • Publication number: 20100323918
    Abstract: A method to assemble functional materials, such as nanomaterials, onto a polymer surface to create a corresponding functionalized surface involves creating a solution of the functional material, providing a sacrificial substrate, disposing the functional solution onto a surface of the substrate and then covering the substrate with a liquid polymer. The sacrificial substrate is then dissolved, leaving behind a functional surface embedded within the cured polymer. One specific aspect of the invention relates to the embedding of functionalized carbon nanotubes onto a polymer surface for creating a nano-engineered surface. Devices employing functional surfaces are disclosed that are suitable for the immobilization of enzymes, DNA, peptides, proteins, cells, catalyst, and/or other chemicals or molecules for chemical, biochemical, or biological analysis, reactions, filtration.
    Type: Application
    Filed: February 10, 2009
    Publication date: December 23, 2010
    Applicant: Microdysis, Inc
    Inventors: Joseph Huang, Yufeng Ma, Malcom R. Kahn
  • Publication number: 20080206101
    Abstract: The instant application provides a fluidic array device having an elastomeric body that provides easy fluidic control of the device. The elastomeric body may include plurality of intersecting row and column channels. Reactions may occur at the intersection spots formed by the intersecting channels. Pinching applied at suitable locations along the channels enables the channels to be opened or closed, and thus provides control of fluids pumped through the device. The surfaces of the channels and intersection spots may be engineered to have certain properties. In particular, the intersection spots may be nanoengineered to have surface properties differing from those of the channels, and thus reactions may be selectively controlled to occur only, or highly preferentially, in the intersection spots.
    Type: Application
    Filed: February 22, 2008
    Publication date: August 28, 2008
    Inventors: Joseph Zhili Huang, Yong Shi, Yufeng Ma