Patents by Inventor Leon Tao

Leon Tao 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: 11763107
    Abstract: Small, low-cost satellite systems, like CubeSats or other microsatellites, can exhibit reduced reliability relative to higher-cost satellite systems. This can result in difficulty identifying, communicating with, and tracking such satellite systems when they fail. Provided herein are reliable, low-cost, low-energy, turn-key systems for identification and tracking of small satellites that can be readily added to a microsatellite with minimal integration costs and while occupying a minimal amount of volume, mass, and external area of the host satellite. These systems are electrically isolated from the satellite bus, being powered by internal batteries or other separate energy sources and providing reliable identification and tracking even when the other systems of the satellite have failed.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: September 19, 2023
    Assignee: SRI International
    Inventors: Samson Phan, Leon Tao, William Hoskins, Scott Gulkin, Bryan Klofas, Todd Koumrian, Michael Cousins
  • Patent number: 11385327
    Abstract: Implementation of radio frequency applications in satellite environments can be constrained by size, mass, cost, and power limitations. These applications can include radar, communications, radio astronomy, or other scientific or industrial applications. A variety of systems are provided to facilitate recording of baseband radio frequency signals at high bandwidth and low power using low-cost components. These systems include field-programmable gate arrays or other programmable logic devices integrating between high-frequency ADCs and two or more multiplexed non-volatile storage mediums. Also provided are systems for providing calibration and self-test functionality in a low-cost, flexible, low-power radio frequency frontend. These systems include high-frequency switches configured to allow a calibration and/or self-test pulse to be acquired for each radar pulse generated by the system.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: July 12, 2022
    Assignee: SRI International
    Inventors: John J Buonocore, David Watt, Roman Y Novoselov, Steven Chen, Leon Tao, Mark Schutzer
  • Publication number: 20210406490
    Abstract: Small, low-cost satellite systems, like CubeSats or other microsatellites, can exhibit reduced reliability relative to higher-cost satellite systems. This can result in difficulty identifying, communicating with, and tracking such satellite systems when they fail. Provided herein are reliable, low-cost, low-energy, turn-key systems for identification and tracking of small satellites that can be readily added to a microsatellite with minimal integration costs and while occupying a minimal amount of volume, mass, and external area of the host satellite. These systems are electrically isolated from the satellite bus, being powered by internal batteries or other separate energy sources and providing reliable identification and tracking even when the other systems of the satellite have failed.
    Type: Application
    Filed: June 24, 2021
    Publication date: December 30, 2021
    Inventors: Samson Phan, Leon Tao, William Hoskins, Scott Gulkin, Bryan Klofas, Todd Koumrian, Michael Cousins
  • Publication number: 20200124705
    Abstract: Implementation of radio frequency applications in satellite environments can be constrained by size, mass, cost, and power limitations. These applications can include radar, communications, radio astronomy, or other scientific or industrial applications. A variety of systems are provided to facilitate recording of baseband radio frequency signals at high bandwidth and low power using low-cost components. These systems include field-programmable gate arrays or other programmable logic devices integrating between high-frequency ADCs and two or more multiplexed non-volatile storage mediums. Also provided are systems for providing calibration and self-test functionality in a low-cost, flexible, low-power radio frequency frontend. These systems include high-frequency switches configured to allow a calibration and/or self-test pulse to be acquired for each radar pulse generated by the system.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 23, 2020
    Inventors: John J. Buonocore, David Watt, Roman Y. Novoselov, Steven Chen, Leon Tao, Mark Schutzer
  • Publication number: 20120166810
    Abstract: The disclosed technology combines biometric authentication and data transmission technologies to provide for secure storing of private information and wireless transmission of the private information in order to perform predefined tasks. A user may securely store his private information in an electronic database. To access the private information stored securely, the user provides his biometric data. Upon successful biometric authentication of the user, authorization is granted to the user to access the private information stored in the electronic database. Upon successful biometric authentication, the private information can be transmitted via short range wireless communication. Optionally, upon successful biometric authentication, the private information can be transmitted via wireless communication over a computer network.
    Type: Application
    Filed: October 27, 2011
    Publication date: June 28, 2012
    Inventors: Leon Tao, David Tao
  • Patent number: 6920030
    Abstract: An apparatus is taught for draining static electrical charges build-up on a traveling web of dielectric material. The apparatus includes discharge means comprised of a metal member having one end formed into at least one needle point projection. The discharge means is connected to ground potential and mounted in close proximity to the traveling web. Responsive to concentrated static electrical charges the discharge means causes ionization of the gasses surrounding the discharge means, thereby draining the static electrical charges to the ground potential through the discharge means. The apparatus further includes means for sensing and reading the magnitude of static electrical charges drawn from the web of dielectric material and for applying the sensed information as digital signals to a manufacturing controller. The manufacturing controller uses the information to control manufacturing parameters that minimize the generation of static electrical charges during the manufacture of the dielectric material.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: July 19, 2005
    Assignee: Honeywell International Inc.
    Inventors: Lee M. Chase, Steve Axelrod, Robert L. Beaman, Leon Tao
  • Publication number: 20040027778
    Abstract: An apparatus is taught for draining static electrical charges build-up on a traveling web of dielectric material. The apparatus includes discharge means comprised of a metal member having one end formed into at least one needle point projection. The discharge means is connected to ground potential and mounted in close proximity to the traveling web. Responsive to concentrated static electrical charges the discharge means causes ionization of the gasses surrounding the discharge means, thereby draining the static electrical charges to the ground potential through the discharge means. The apparatus further includes means for sensing and reading the magnitude of static electrical charges drawn from the web of dielectric material and for applying the sensed information as digital signals to a manufacturing controller. The manufacturing controller uses the information to control manufacturing parameters that minimize the generation of static electrical charges during the manufacture of the dielectric material.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 12, 2004
    Inventors: Lee M. Chase, Steve Axelrod, Robert L. Beaman, Leon Tao