Patents by Inventor Madhukar Varshney

Madhukar Varshney 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).

  • METHODS AND SYSTEMS FOR DETECTION OF CONTAMINANTS
    Publication number: 20100120016
    Abstract: An impedance biosensor for detecting a contaminant in a starting material, the biosensor comprising a housing, an input device supported by the housing, an output device supported by the housing, a microfluidic cell supported by the housing, the starting material being engagable with the microfluidic cell, and an impedance analyzer supported by the housing and operable to measure impedance of the starting material to detect the presence of a contaminant.
    Type: Application
    Filed: August 31, 2007
    Publication date: May 13, 2010
    Inventors: Yanbin Li, Billy Hargis, Steve Tung, Luc Berghman, Walter Bottje, Ronghui Wang, Zunzhong Ye, Madhukar Varshney, Balaji Srinivasan
  • Separation system and efficient capture of contaminants using magnetic nanoparticles
    Patent number: 7699979
    Abstract: Methods are disclosed for the capture, detection, separation, isolation and quantification of contaminants in a starting material. Also disclosed are competitive assay methods for the detection and quantification of contaminants in a starting material. Kits for use with the method are disclosed as well. A system for capturing, separating and/or concentrating contaminants from a material is also presented. The system captures, separates and/or concentrates contaminants such as bacteria, viruses, other microorganisms, and/or larger items, such as insects, from a variety of materials, such as food, and environmental and clinical materials. In general, the system uses a rotating magnetic field to mix the material with magnetic particles to capture the target contaminants, and a fixed magnetic field to separate and concentrate the captured target contaminants.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: April 20, 2010
    Assignee: Board of Trustees of the University of Arkansas
    Inventors: Yanbin Li, Madhukar Varshney, Zunzhang Ye
  • Separation system and efficient capture of contaminants using magnetic nanoparticles
    Publication number: 20070114181
    Abstract: Methods are disclosed for the capture, detection, separation, isolation and quantification of contaminants in a starting material. Also disclosed are competitive assay methods for the detection and quantification of contaminants in a starting material. Kits for use with the method are disclosed as well. A system for capturing, separating and/or concentrating contaminants from a material is also presented. The system captures, separates and/or concentrates contaminants such as bacteria, viruses, other microorganisms, and/or larger items, such as insects, from a variety of materials, such as food, and environmental and clinical materials. In general, the system uses a rotating magnetic field to mix the material with magnetic particles to capture the target contaminants, and a fixed magnetic field to separate and concentrate the captured target contaminants.
    Type: Application
    Filed: January 9, 2006
    Publication date: May 24, 2007
    Inventors: Yanbin Li, Madhukar Varshney, Zunzhang Ye