Patents by Inventor Gopi Suresh OGGU

Gopi Suresh OGGU 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).

  • Rapid, low-cost process for the preparation of SERS substrate and SERS substrate prepared thereby
    Patent number: 11927537
    Abstract: The present invention relates to a cost effective and single step process for rapid manufacturing of paper-based SERS substrates (100), wherein chitosan is used for direct in situ reduction of the metallic precursor solutions for production of metallic nanoparticles on the substrates. The crucial step in the process involves the incubation of the paper-based substrates under humidifying conditions at an elevated temperature for a predetermined duration. The metal nanoparticles thus produced are homogenously deposited over the paper-based substrate making the paper-based substrate suitable for SERS analysis. The paper-based substrate thus developed is cost-effective, flexible, easy to load and is demonstrated to have exceptional sensitivity with detection limits of up to 1 pM.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: March 12, 2024
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Amit Asthana, Mohan Rao Chintalagiri, Saurabh Kumar Srivastava, Gopi Suresh Oggu
  • A RAPID, LOW-COST PROCESS FOR THE PREPARATION OF SERS SUBSTRATE AND SERS SUBSTRATE PREPARED THEREBY
    Publication number: 20210156804
    Abstract: The present invention relates to a cost effective and single step process for rapid manufacturing of paper-based SERS substrates (100), wherein chitosan is used for direct in situ reduction of the metallic precursor solutions for production of metallic nanoparticles on the substrates. The crucial step in the process involves the incubation of the paper-based substrates under humidifying conditions at an elevated temperature for a predetermined duration. The metal nanoparticles thus produced are homogenously deposited over the paper-based substrate making the paper-based substrate suitable for SERS analysis. The paper-based substrate thus developed is cost-effective, flexible, easy to load and is demonstrated to have exceptional sensitivity with detection limits of up to 1 pM.
    Type: Application
    Filed: February 8, 2019
    Publication date: May 27, 2021
    Inventors: Amit ASTHANA, Mohan Rao CHINTALAGIRI, Saurabh Kumar SRIVASTAVA, Gopi Suresh OGGU