Patents by Inventor Prabhu Soundarrajan

Prabhu Soundarrajan 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: 20080210742
    Abstract: A process for encapsulating metal microparticles in a pH sensitive polymer matrix using a suspension containing the polymer. The process first disperses the metal particles in a polymeric solution consisting of a pH sensitive polymer. The particles are then encapsulated in the form of micro-spheres of about 5-10 microns in diameter comprising the pH sensitive polymer and the metal ions (Ni2+, Cu2+) to be coated. The encapsulated matrix includes first metal particles homogeneously dispersed in a pH sensitive matrix, comprising the second metal ions. A high shear homogenization process ensures homogenization of the aqueous mixture resulting in uniform particle encapsulation. The encapsulated powder may be formed using spray drying. The powder may be then coated in a controlled aqueous media using an electroless deposition process. The polymer is removed when the encapsulated micro-spheres encounter a pH change in the aqueous solution.
    Type: Application
    Filed: August 15, 2007
    Publication date: September 4, 2008
    Inventors: Zvi Yaniv, Prabhu Soundarrajan
  • Patent number: 7399400
    Abstract: The present invention is directed to systems and methods for detecting biological and chemical species in liquid and gaseous phase. The systems and methods utilize carbon nanotubes to enhance sensitivity and selectivity towards the reacting species by decreasing interference and detecting a wide range of concentrations.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: July 15, 2008
    Assignee: Nano-Proprietary, Inc.
    Inventors: Prabhu Soundarrajan, James P. Novak
  • Patent number: 7287412
    Abstract: A hydrogen sensor and/or switch fabricated from an array of nanowires or a nanoparticle thick film composed of metal or metal alloys. The sensor and/or switch demonstrates a wide operating temperature range and shortened response time due to fabrication materials and methods. The nanowires or nanoparticle thick films demonstrate an increase in conductivity in the presence of hydrogen.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: October 30, 2007
    Assignee: Nano-Proprietary, Inc.
    Inventors: Kwok Ng, Greg Monty, Yunjun Li, Zvi Yaniv, Prabhu Soundarrajan
  • Publication number: 20070167832
    Abstract: Systems and techniques for the analysis of gases for medical purposes are described. In one aspect, a system includes a sample collector to collect a physical sample associated with an individual and present a gas sample for analysis, a gas analysis device to analyze the gas sample presented by the sample collector to determine a concentration of one or more non-aqueous gases in the gas sample, a data storage device that includes information reflecting a correlation between concentration of the one or more non-aqueous gases in the gas sample and a disease state, and a data analysis device to determine a medical condition of the individual based on the concentration of one or more non-aqueous gases in the gas sample and the information.
    Type: Application
    Filed: December 5, 2006
    Publication date: July 19, 2007
    Applicant: NANO-PROPRIETARY, INC.
    Inventors: Zvi Yaniv, Prabhu Soundarrajan
  • Publication number: 20070151848
    Abstract: A method for electronically detecting an electrostatic based biological binding event. This same binding event can be detected optically via complicated experimental setups. A balanced coil system is incorporated into a hand held unit with a plug-in chip. The chip may further be made to act like an array with a different surface molecule for detection of different bio-molecules.
    Type: Application
    Filed: December 21, 2006
    Publication date: July 5, 2007
    Applicant: Nano-Proprietary, Inc.
    Inventors: James Novak, Prabhu Soundarrajan, Alexei Tikhonski, Zvi Yaniv
  • Publication number: 20070125153
    Abstract: A device for sensing hydrogen utilizes a palladium-nickel alloy of nanoparticles deposited on a substrate between two electrodes connected to an electrical circuit. As hydrogen is sensed the resistance of the device changes, which can then be measured and monitored.
    Type: Application
    Filed: October 20, 2006
    Publication date: June 7, 2007
    Inventors: Thomas Visel, Prabhu Soundarrajan, Igor Pavlovsky
  • Publication number: 20070086921
    Abstract: A gas sensing mechanism and a gas sensor based on a semiconducting carbon nanotube diode structure are disclosed. The gas sensor operates by detecting the change in conductivity characteristic of the current vs. voltage behavior of an I—N, or I—P junction, in the carbon nanotube. In the presence of electrophilic gas species at the I—N junction, or nucleophilic gas species at the I—P junction, a P—N, or N—P, junction is created by doping of the carbon nanotube by the respective gas species. The resulting change from the undoped, instrinsic i-type to p-type, or n-type, creates a diode structure whose conductivity characteristics can be measured with high accuracy and selectivity.
    Type: Application
    Filed: July 20, 2005
    Publication date: April 19, 2007
    Applicant: Nano-Proprietary, Inc.
    Inventors: Thomas Visel, Prabhu Soundarrajan
  • Publication number: 20060021881
    Abstract: The present invention is directed to systems and methods for detecting biological and chemical species in liquid and gaseous phase. The systems and methods utilize carbon nanotubes to enhance sensitivity and selectivity towards the reacting species by decreasing interference and detecting a wide range of concentrations.
    Type: Application
    Filed: September 29, 2004
    Publication date: February 2, 2006
    Applicant: Nano-Proprietary, Inc.
    Inventors: Prabhu Soundarrajan, Jamie Novak
  • Publication number: 20050244811
    Abstract: An apparatus for detecting multiple analytes comprising an array of nanobiosensors, each comprising a biological entity immobilized onto carbon nanotubes, wherein a plurality of the nanobiosensors in the array have unique biological entities, wherein a first one of the plurality of nanobiosensors has a first biological entity immobilized onto carbon nanotubes, and wherein a second one of the plurality of nanobiosensors has a second biological entity immobilized onto carbon nanotubes, the first biological entity is unique relative to the second biological entity.
    Type: Application
    Filed: December 14, 2004
    Publication date: November 3, 2005
    Applicant: Nano-Proprietary, Inc.
    Inventors: Prabhu Soundarrajan, Valerie Ginsberg, Zvi Yaniv
  • Publication number: 20040261500
    Abstract: A hydrogen sensor and/or switch fabricated from an array of nanowires or a nanoparticle thick film composed of metal or metal alloys. The sensor and/or switch demonstrates a wide operating temperature range and shortened response time due to fabrication materials and methods. The nanowires or nanoparticle thick films demonstrate an increase in conductivity in the presence of hydrogen.
    Type: Application
    Filed: May 26, 2004
    Publication date: December 30, 2004
    Applicant: Nano-Proprietary, Inc.
    Inventors: Kwok Ng, Greg Monty, Yunjun Li, Zvi Yaniv, Prabhu Soundarrajan