Patents by Inventor Sarath Gopalakrishnan

Sarath Gopalakrishnan 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).

  • SUBSOIL MOISTURE MONITORING SYSTEM INCLUDING BATTERY-LESS WIRELESS CHIPLESS SENSORS
    Publication number: 20230221274
    Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.
    Type: Application
    Filed: March 17, 2023
    Publication date: July 13, 2023
    Applicant: Purdue Research Foundation
    Inventors: Sarath Gopalakrishnan, Jose Waimin, Rahim Rahimi, Nithin Raghunathan
  • Subsoil moisture monitoring system including battery-less wireless chipless sensors
    Patent number: 11635402
    Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.
    Type: Grant
    Filed: October 26, 2021
    Date of Patent: April 25, 2023
    Assignee: Purdue Research Foundation
    Inventors: Sarath Gopalakrishnan, Jose Waimin, Rahim Rahimi, Nithin Raghunathan
  • SUBSOIL MOISTURE MONITORING SYSTEM INCLUDING BATTERY-LESS WIRELESS CHIPLESS SENSORS
    Publication number: 20220128504
    Abstract: A batteryless, chipless, sensor is disclosed which includes a substrate, at least two conductive strips disposed on the substrate, a passivation layer encasing the substrate and the at least two conductive strips, wherein the conductive strips are adapted to respond to an interrogation signal from a reader having a first polarization, with a response signal at a second polarization different than the first polarization.
    Type: Application
    Filed: October 26, 2021
    Publication date: April 28, 2022
    Applicant: Purdue Research Foundation
    Inventors: Sarath Gopalakrishnan, Jose Waimin, Rahim Rahimi, Nithin Raghunathan