Patents by Inventor CHRISTIAN JOHN LONG

CHRISTIAN JOHN LONG 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: 11287366
    Abstract: A scanning microwave ellipsometer includes: a microwave ellipsometry test head including: a polarization controller; a transmission line; and a sensor that produces sensor microwave radiation, subjects a sample to the sensor microwave radiation, receives a sample reflected microwave radiation from the sample that results from subjecting the sample with the sample reflected microwave radiation, and produces a sensor-received microwave radiation from the sample reflected microwave radiation, wherein a polarization of the sensor microwave radiation is controlled by the polarization controller; an electrical signal measurement system that produces an electrical readout signal such that a magnitude of reflection coefficient ? and an angle of reflection coefficient ? of the sample reflected microwave radiation is determined from the electrical readout signal; and a position controller that adjusts a relative position of the sensor and the sample.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: March 29, 2022
    Assignee: GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY OF COMMERCE
    Inventors: Christian John Long, Nathan Daniel Orloff, Nina Popovic Basta, Edward Joseph Garboczi
  • Publication number: 20200348224
    Abstract: A scanning microwave ellipsometer includes: a microwave ellipsometry test head including: a polarization controller; a transmission line; and a sensor that produces sensor microwave radiation, subjects a sample to the sensor microwave radiation, receives a sample reflected microwave radiation from the sample that results from subjecting the sample with the sample reflected microwave radiation, and produces a sensor-received microwave radiation from the sample reflected microwave radiation, wherein a polarization of the sensor microwave radiation is controlled by the polarization controller; an electrical signal measurement system that produces an electrical readout signal such that a magnitude of reflection coefficient ? and an angle of reflection coefficient ? of the sample reflected microwave radiation is determined from the electrical readout signal; and a position controller that adjusts a relative position of the sensor and the sample.
    Type: Application
    Filed: May 1, 2020
    Publication date: November 5, 2020
    Inventors: Christian John Long, Nathan Daniel Orloff, Nina Popovic Basta, Edward Joseph Garboczi
  • Patent number: 10261032
    Abstract: A noncontact resonameter includes: a resonator to: produce an excitation signal including a field; subject a sample to the excitation signal; produce a first resonator signal in a presence of the sample and the excitation signal, the first resonator signal including: a first quality factor of the resonator; a first resonance frequency of the resonator; or a combination thereof, the first resonator signal occurring in an absence of contact between the sample and the resonator; and produce a second resonator signal in a presence of the excitation signal and an absence of the sample, the second resonator signal including: a second quality factor of the resonator; a second resonance frequency of the resonator; or a combination thereof; a circuit in electrical communication with the resonator to receive the first resonator signal and the second resonator signal; and a continuous feeder to: provide the sample proximate to the resonator; dispose the sample intermediately in the field of the excitation signal during
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: April 16, 2019
    Assignee: NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
    Inventors: Nathan Daniel Orloff, Christian John Long, Jan Obrzut
  • Publication number: 20160161424
    Abstract: A noncontact resonameter includes: a resonator to: produce an excitation signal including a field; subject a sample to the excitation signal; produce a first resonator signal in a presence of the sample and the excitation signal, the first resonator signal including: a first quality factor of the resonator; a first resonance frequency of the resonator; or a combination thereof, the first resonator signal occurring in an absence of contact between the sample and the resonator; and produce a second resonator signal in a presence of the excitation signal and an absence of the sample, the second resonator signal including: a second quality factor of the resonator; a second resonance frequency of the resonator; or a combination thereof; a circuit in electrical communication with the resonator to receive the first resonator signal and the second resonator signal; and a continuous feeder to: provide the sample proximate to the resonator; dispose the sample intermediately in the field of the excitation signal during
    Type: Application
    Filed: December 3, 2015
    Publication date: June 9, 2016
    Inventors: NATHAN DANIEL ORLOFF, IV, CHRISTIAN JOHN LONG, JAN OBRZUT