Patents by Inventor I-Tsang Wu

I-Tsang Wu 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).

  • Micromechanical devices based on piezoelectric resonators
    Patent number: 10158340
    Abstract: A piezoelectrically transduced resonator device includes a wafer having a substrate, a buried oxide layer formed on the substrate, and a device layer formed on the buried oxide layer, and a resonator suspended within an air gap of the wafer above the substrate, the resonator including a portion of the device layer, a piezoelectric layer, and top and bottom electrodes contacting top and bottom sides of the piezoelectric layer, wherein the portion of the device layer is not directly connected to the wafer and wherein the resonator is configured to move relative to the substrate under electrostatic force to tune the frequency of the resonator device when a direct current voltage is applied between the substrate and the portion of the device layer of the resonator.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: December 18, 2018
    Assignee: University of South Florida
    Inventors: I-Tsang Wu, Julio Mario Dewdney, Jing Wang
  • Devices having nanoscale structures and methods for making same
    Patent number: 9691912
    Abstract: In one embodiment, a device includes a substrate having a top surface and cavity that defines generally vertical walls, a thin film of material that has been deposited on the walls of the cavity, and a further material that fills the cavity, wherein a top edge of the thin film is exposed and forms a trace that is flush with the top surface of the substrate and has substrate material on one side and the further material on the other side.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: June 27, 2017
    Assignee: University of South Florida
    Inventors: Jing Wang, I-Tsang Wu
  • Micromechanical devices based on piezoelectric resonators
    Patent number: 9276556
    Abstract: In some embodiments, a micromechanical filter includes multiple subfilters, each subfilter comprising multiple piezoelectric resonators mechanically coupled in series, wherein the subfilters are mechanically coupled to each other in parallel.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: March 1, 2016
    Assignee: University of South Florida
    Inventors: I-Tsang Wu, Julio Mario Dewdney, Jing Wang
  • Devices having nanoscale structures and methods for making same
    Patent number: 9184308
    Abstract: In one embodiment, devices, such as metal-insulator-metal tunneling diodes, are fabricated by forming a cavity in a substrate having a top surface, conformally depositing a thin film of material in the cavity so as to form a thin layer of material on walls of the cavity, and depositing a layer of material to fill the cavity, wherein a top edge of the thin film is exposed and is flush with the top surface of the substrate.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: November 10, 2015
    Assignee: Univerity of South Florida
    Inventors: I-Tsang Wu, Jing Wang
  • Capacitively and piezoelectrically transduced micromechanical resonators
    Patent number: 9160305
    Abstract: In one embodiment, a hybrid micromechanical resonator includes a capacitive resonator element and a piezoelectric resonator element, wherein the resonator can be capacitively and piezoelectrically transduced.
    Type: Grant
    Filed: October 10, 2013
    Date of Patent: October 13, 2015
    Assignee: University of South Florida
    Inventors: I-Tsang Wu, Julio Mario Dewdney, Jing Wang