Patents by Inventor Charles Alan Rohde

Charles Alan Rohde 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: 10466353
    Abstract: A leaky-wave antenna for fluid environments includes a waveguide cavity defined by a waveguide wall. The waveguide cavity is filled with a waveguide fluid. The waveguide walls are made of either an anisotropic material that utilize one of orthotropic stiffness of the anisotropic material to control mode conversion, a band gap material to approximate an acoustically rigid boundary, and a combination of the two materials.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 5, 2019
    Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Jeffrey Rogers, Katherine Woolfe, Matthew David Guild, Theodore P. Martin, Christina Jeanne Naify, Charles Alan Rohde
  • Publication number: 20190331588
    Abstract: A system for orienting particles in a microfluidic system includes one or more radiation pressure sources arranged to expose particles to radiation pressure to cause the particles to adopt a particular orientation in the fluid. A system for sorting particles in a microfluidic system includes a detection stage arranged to detect at least one difference or discriminate between particles in the fluid flow past the detection stage, and one or more radiation pressure sources past which the particles move sequentially and a controller arranged to switch radiation energy to cause a change in direction of movement of selected particles in the fluid flow to sort the particles. The particles may be biological particles such as spermatazoa. The radiation pressure may be optical pressure and may be from one or more waveguides which may extend across a channel of the microfluidic system.
    Type: Application
    Filed: July 10, 2019
    Publication date: October 31, 2019
    Applicant: Engender Technologies Limited
    Inventors: Miriam Cather Simpson, Charles Alan Rohde
  • Patent number: 10393644
    Abstract: A system for orienting particles in a microfluidic system includes one or more radiation pressure sources arranged to expose particles to radiation pressure to cause the particles to adopt a particular orientation in the fluid. A system for sorting particles in a microfluidic system includes a detection stage arranged to detect at least one difference or discriminate between particles in the fluid flow past the detection stage, and one or more radiation pressure sources past which the particles move sequentially and a controller arranged to switch radiation energy to cause a change in direction of movement of selected particles in the fluid flow to sort the particles. The particles may be biological particles such as spermatozoa. The radiation pressure may be optical pressure and may be from one or more waveguides which may extend across a channel of the microfluidic system.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: August 27, 2019
    Assignee: Engender Technologies Limited
    Inventors: Miriam Cather Simpson, Charles Alan Rohde
  • Publication number: 20190086536
    Abstract: A leaky-wave antenna for fluid environments includes a waveguide cavity defined by a waveguide wall. The waveguide cavity is filled with a waveguide fluid. The waveguide walls are made of either an anisotropic material that utilize one of orthotropic stiffness of the anisotropic material to control mode conversion, a band gap material to approximate an acoustically rigid boundary, and a combination of the two materials.
    Type: Application
    Filed: September 21, 2017
    Publication date: March 21, 2019
    Inventors: Jeffrey Rogers, Katherine Woolfe, Matthew David Guild, Theodore P. Martin, Christina Jeanne Naify, Charles Alan Rohde
  • Publication number: 20190035374
    Abstract: A device for use in a medium comprising a medium vibro-acoustic impedance. The device includes an elastic material including a plurality of unit cells. The plurality of unit cells includes a first unit cell. The first unit cell includes a first unit-cell joint comprising a first unit-cell joint wall defining a first joint central void, a first unit-cell joint inclusion located in the first joint central void, and at least two first unit-cell arms connected to and extending away from the first unit-cell joint. The elastic material includes an elastic-material vibro-acoustic impedance. The elastic-material vibro-acoustic impedance and the medium vibro-acoustic impedance are sufficiently vibro-acoustically impedance-matched to couple time-varying, propagating vibro-acoustic fields between said elastic material and the medium.
    Type: Application
    Filed: July 31, 2018
    Publication date: January 31, 2019
    Inventors: Theodore P. Martin, Charles Alan Rohde, Gregory Orris, Kristin Charipar, Alberto Piqué
  • Publication number: 20170370822
    Abstract: A system for orienting particles in a microfluidic system includes one or more radiation pressure sources arranged to expose particles to radiation pressure to cause the particles to adopt a particular orientation in the fluid. A system for sorting particles in a microfluidic system includes a detection stage arranged to detect at least one difference or discriminate between particles in the fluid flow past the detection stage, and one or more radiation pressure sources past which the particles move sequentially and a controller arranged to switch radiation energy to cause a change in direction of movement of selected particles in the fluid flow to sort the particles. The particles may be biological particles such as spermatozoa. The radiation pressure may be optical pressure and may be from one or more waveguides which may extend across a channel of the microfluidic system.
    Type: Application
    Filed: September 7, 2017
    Publication date: December 28, 2017
    Inventors: Miriam Cather Simpson, Charles Alan Rohde
  • Patent number: 9784663
    Abstract: A system for orienting particles in a microfluidic system includes one or more radiation pressure sources arranged to expose particles to radiation pressure to cause the particles to adopt a particular orientation in the fluid. A system for sorting particles in a microfluidic system includes a detection stage arranged to detect at least one difference or discriminate between particles in the fluid flow past the detection stage, and one or more radiation pressure sources past which the particles move sequentially and a controller arranged to switch radiation energy to cause a change in direction of movement of selected particles in the fluid flow to sort the particles. The particles may be biological particles such as spermatazoa. The radiation pressure may be optical pressure and may be from one or more waveguides which may extend across a channel of the microfluidic system.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: October 10, 2017
    Assignee: Engender Technologies Limited
    Inventors: Miriam Cather Simpson, Charles Alan Rohde
  • Publication number: 20170059707
    Abstract: An ultrasonic imaging system includes a micro-acoustic source configured to generate a broadband ultrasonic pulse. The ultrasonic imaging system further includes an acoustic leaky-wave antenna configured to use a frequency dependent angular dispersion to simultaneously collect reflected signals from multiple angles of the broadband ultrasonic pulse, wherein the reflected signals contain information about a surrounding medium. The ultrasonic imaging system further includes a sensor operationally coupled to the acoustic leaky-wave antenna, the sensor configured to detect the reflected signals collected by the acoustic leaky-wave antenna.
    Type: Application
    Filed: August 25, 2016
    Publication date: March 2, 2017
    Inventors: Charles Alan Rohde, Matthew David Guild, Christina Jeanne Naify
  • Publication number: 20150198517
    Abstract: A system for orienting particles in a microfluidic system includes one or more radiation pressure sources arranged to expose particles to radiation pressure to cause the particles to adopt a particular orientation in the fluid. A system for sorting particles in a microfluidic system includes a detection stage arranged to detect at least one difference or discriminate between particles in the fluid flow past the detection stage, and one or more radiation pressure sources past which the particles move sequentially and a controller arranged to switch radiation energy to cause a change in direction of movement of selected particles in the fluid flow to sort the particles. The particles may be biological particles such as spermatazoa. The radiation pressure may be optical pressure and may be from one or more waveguides which may extend across a channel of the microfluidic system.
    Type: Application
    Filed: July 29, 2013
    Publication date: July 16, 2015
    Applicant: Auckland Uniservices Limited
    Inventors: Miriam Cather Simpson, Charles Alan Rohde