Patents by Inventor Ravishankar Sundararaman

Ravishankar Sundararaman 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).

  • Patent number: 11688918
    Abstract: An electromagnetically shielded or reflecting device having a film of shielding or reflecting material and a device for obtaining, in a dielectric material volume, selective propagation of electromagnetic radiation in predetermined frequency band.
    Type: Grant
    Filed: April 5, 2022
    Date of Patent: June 27, 2023
    Assignee: Software Defined Technologies, Inc.
    Inventors: Manichandra Morampudi, Ravishankar Sundararaman, Michael M. Salour
  • Patent number: 8987701
    Abstract: In one embodiment there is set forth a method comprising providing a semiconductor structure having an electrode, wherein the providing includes providing a phase transition material region and wherein the method further includes imparting energy to the phase transition material region to induce a phase transition of the phase transition material region. By inducing a phase transition of the phase transition material region, a state of the semiconductor structure can be changed. There is further set forth an apparatus comprising a structure including an electrode and a phase transition material region, wherein the apparatus is operative for imparting energy to the phase transition material region to induce a phase transition of the phase transition material region without the phase transition of the phase transition material region being dependent on electron transport through the phase transition material region.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: March 24, 2015
    Assignee: Cornell University
    Inventors: Sandip Tiwari, Ravishankar Sundararaman, Sang Hyeon Lee, Moonkyung Kim
  • Publication number: 20120280301
    Abstract: In one embodiment there is set forth a method comprising providing a semiconductor structure having an electrode, wherein the providing includes providing a phase transition material region and wherein the method further includes imparting energy to the phase transition material region to induce a phase transition of the phase transition material region. By inducing a phase transition of the phase transition material region, a state of the semiconductor structure can be changed. There is further set forth an apparatus comprising a structure including an electrode and a phase transition material region, wherein the apparatus is operative for imparting energy to the phase transition material region to induce a phase transition of the phase transition material region without the phase transition of the phase transition material region being dependent on electron transport through the phase transition material region.
    Type: Application
    Filed: May 28, 2010
    Publication date: November 8, 2012
    Applicant: CORNELL UNIVERSITY
    Inventors: Sandip Tiwari, Ravishankar Sundararaman, Sang Hyeon Lee, Moonkyung Kim
  • Patent number: 8080839
    Abstract: An electro-mechanical transistor includes a source electrode and a drain electrode spaced apart from each other. A source pillar is between the substrate and the source electrode. A drain pillar is between the substrate and the drain electrode. A moveable channel is spaced apart from the source electrode and the drain electrode. A gate nano-pillar is between the moveable channel and the substrate. A first dielectric layer is between the moveable channel and the gate nano-pillar. A second dielectric layer is between the source pillar and the source electrode. A third dielectric layer is between the drain pillar and the drain electrode.
    Type: Grant
    Filed: August 28, 2009
    Date of Patent: December 20, 2011
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Sandip Tiwari, Moon-Kyung Kim, Joshua Mark Rubin, Soo-Doo Chae, Choong-Man Lee, Ravishankar Sundararaman
  • Publication number: 20110049650
    Abstract: An electromechanical transistor includes a source electrode and a drain electrode spaced apart from each other. A source pillar is between the substrate and the source electrode. A drain pillar is between the substrate and the drain electrode. A moveable channel is spaced apart from the source electrode and the drain electrode. A gate nano-pillar is between the moveable channel and the substrate. A first dielectric layer is between the moveable channel and the gate nano-pillar. A second dielectric layer is between the source pillar and the source electrode. A third dielectric layer is between the drain pillar and the drain electrode.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 3, 2011
    Inventors: Sandip Tiwari, Moon-Kyung Kim, Joshua Mark Rubin, Soo-Doo Chae, Choong-Man Lee, Ravishankar Sundararaman