Patents by Inventor C. Retna Raj

C. Retna Raj 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).

  • Ultra-sensitive simultaneous electrochemical determination of arsenic, mercury and copper
    Patent number: 8568825
    Abstract: A sensor for the simultaneous detection of inorganic contaminants, As (III), Hg (II) and Cu (II) in water and having a limit of detection of 0.02 ppb, comprising a conducting support having a layer comprised of a three dimensional silicate network comprised of thiol tail groups immobilized with citrate stabilized gold nanoparticles, wherein the gold nanoparticles have a size in the range of 70 to 100 nm.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: October 29, 2013
    Assignee: Indian Institute of Technology
    Inventors: C. Retna Raj, Bikash Kumar Jena
  • Ultra-Sensitive Simultaneous Electrochemical Determination of Arsenic, Mercury and Copper
    Publication number: 20090260984
    Abstract: A sensor for the simultaneous detection of inorganic contaminants, As (III), Hg (II) and Cu (II) in water and having a limit of detection of 0.02 ppb, comprising a conducting support having a layer comprised of a three dimensional silicate network comprised of thiol tail groups immobilized with citrate stabilized gold nanoparticles, wherein the gold nanoparticles have a size in the range of 70 to 100 nm.
    Type: Application
    Filed: April 21, 2009
    Publication date: October 22, 2009
    Applicant: INDIAN INSTITUTE OF TECHNOLOGY
    Inventors: C. Retna Raj, Bikash Kumar Jena