Patents Assigned to Clemson University
  • Publication number: 20220390810
    Abstract: This system and method of for providing a tunable orbital angular momentum system for providing higher order Bessel beams comprising: an acousto-optical deflector configured to receive an input beam, deflect a first portion of the input beam a first deflection angle relative to an axis of propagation and along an optical axis and deflect a second portion of the input beam a second deflection angle relative to the optical axis; a line generator disposed along the optical angle for receiving the first portion and the second portion of the input beam and provide an elliptical Gaussian mean; a log-polar optics assembly disposed along the optical angle for receiving the elliptical Gaussian beam and wrapping the elliptical Gaussian beam with an asymmetric ring; and, a Fourier lens configured to receive the wrapped elliptical Gaussian beam.
    Type: Application
    Filed: June 13, 2022
    Publication date: December 8, 2022
    Applicant: Clemson University
    Inventors: Eric G. Johnson, Jerome Keith Miller, Richard Watkins, Kaitlyn Morgan, Wenzhe Li, Yuan Li
  • Patent number: 11510906
    Abstract: A drug product and method for treating a parasitic disease in a host is described. The drug product comprises: a carrier matrix; and a drug substance having the formula: wherein: R1 is selected from the group consisting of H, aliphatic of 1 to 100 carbons and arene comprising up to 100 carbons; each R3 is independently selected from the group consisting of H, aliphatic of 1 to 100 carbons and arene comprising up to 100 carbons; Y represents those elements necessary to form a 5 or 6 membered ring; X is selected from the group consisting of B, O, N, S, Se and P; and n is 1-4 as necessary to complete the valence of X.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: November 29, 2022
    Assignee: Clemson University
    Inventors: Daniel C. Whitehead, James C. Morris, Chandima J. Narangoda
  • Patent number: 11501472
    Abstract: This system is designed to color correct a targeted color or colors in a video stream comprising: a computer device having a computer readable medium; and, a set of computer readable instructions embodied on the computer readable medium that are configured to: receive a dataset that includes one or more pairs of video frames where a first frame of the pair of an incorrect color frame and the second frame of the pair is a color correct frame, using a machine learning module to create a mask according to the dataset, receiving an image, correcting the image, and, transmitting the corrected image to a display.
    Type: Grant
    Filed: September 27, 2020
    Date of Patent: November 15, 2022
    Assignee: Clemson University Research Foundation
    Inventors: Erica B. Walker, D. Hudson Smith
  • Patent number: 11476634
    Abstract: A rare earth-doped optical fiber comprises a fluorosilicate core surrounded by a silica cladding, where the fluorosilicate core comprises an alkaline-earth fluoro-alumino-silicate glass, such as a strontium fluoro-alumino-silicate glass. The rare earth-doped optical fiber may be useful as a high-power fiber laser and/or fiber amplifier. A method of making a rare earth-doped optical fiber comprises: inserting a powder mixture comprising YbF3, SrF2, and Al2O3 into a silica tube; after inserting the powder mixture, heating the silica tube to a temperature of at least about 2000° C., some or all of the powder mixture undergoing melting; drawing the silica tube to obtain a reduced-diameter fiber; and cooling the reduced-diameter fiber. Thus, a rare earth-doped optical fiber comprising a fluorosilicate core surrounded by a silica cladding is formed.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: October 18, 2022
    Assignees: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS, CLEMSON UNIVERSITY
    Inventors: Peter Dragic, John Ballato, Maxime Cavillon
  • Patent number: 11452294
    Abstract: Disclosed are methods for selectively controlling or modifying the growth of Poa annua in a turfgrass using a composition comprising an herbicidally-effective amount tebuconazole, or a salt thereof.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: September 27, 2022
    Assignees: North Carolina State University, Clemson University Research Foundation
    Inventors: Fred H. Yelverton, Lambert McCarty
  • Patent number: 11433353
    Abstract: Methods and systems for the separation of hydrogen isotopes from one another are described. Methods include utilization of a hydrogen isotope selective separation membrane that includes a hydrogen isotope selective layer (e.g., graphene) and a hydrogen ion conductive supporting layer. An electronic driving force encourages passage of isotopes selectively across the membrane at an elevated separation temperature to enrich the product in a selected hydrogen isotope.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: September 6, 2022
    Assignees: Savannah River Nuclear Solutions, LLC, Clemson University Research Foundation, Georgia Tech Research Corporation
    Inventors: Dale A. Hitchcock, Steven M. Serkiz, Timothy M. Krentz, Josef A. Velten, Kyle S. Brinkman, Eric M. Vogel, Katherine T. Young
  • Patent number: 11425863
    Abstract: Yield monitoring systems for round baling machines and methods that can provide weight estimations for round bales at the time of formation are described. Balers can include those that incorporate hydraulically actuated bale kicking or pushing assemblies as well as those that incorporate spring-loaded off ramps. Farm implements including baling machines and cotton module builders are encompassed. The system includes a sensor that can ascertain a physical parameter associated with ejection of a round bale from the farm implement. Physical parameters as may be ascertained can include pressures, velocities, accelerations, etc. associated with bale ejection.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: August 30, 2022
    Assignee: Clemson University Research Foundation
    Inventors: Kendall R. Kirk, H. Guy Ramsey, IV, Perry J. Loftis
  • Patent number: 11415523
    Abstract: A system for monitoring an analyte concentration in liquid is provided. The system includes a coupon comprising an absorbent body with a window through the absorbent body wherein the liquid is maintained in said window by capillary action and surface tension. A reactant is in the absorbent body wherein the reactant is capable of diffusing into the window to react with an analyte in the liquid, or the reactant is able to react with the analyte within the coupon itself, with color-indicating by-products of the reaction diffusing into the window, wherein the analyte is present in an analyte concentration, to form a reactant with a color wherein the color has an intensity which correlates to the analyte concentration. A light source is provided which is capable of passing light into the window wherein the light is attenuated by the color proportional to the analyte concentration to form attenuated light. A detector is provided which is capable measuring an intensity of the attenuated light.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: August 16, 2022
    Assignee: Clemson University Research Foundation
    Inventors: Robert A. Latour, George Chumanov, Alexandra Czynski
  • Patent number: 11374736
    Abstract: This is a system and method for homomorphic encryption comprising: a key generation module configured to generate a secret key, a public key and a bootstrapping key; a private-key encryption module configured to generate a first ciphertext using the secret key; a public-key encryption module configured to generate a second cyphertext using the public key; a private-key decoding module configured to decode a first ciphertext, a second ciphertext and an encrypted analytic result; a homomorphic computational module configured to perform an analytical operation, according to an analytical operation request on the first ciphertext and the second ciphertext without decrypting the first ciphertext and the second ciphertext using the bootstrapping key; and, wherein the encrypted analytical result is provided by the homomorphic computational module and are encrypted with the secret key.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: June 28, 2022
    Assignee: Clemson University
    Inventor: Shuhong Gao
  • Patent number: 11374503
    Abstract: A power transmission system can include a transformer and compensator circuit(s), each coupled between a node of the transformer and a ground connection. The compensator circuit(s) can each be configured to counteract a DC signal component of an AC signal at the transformer. The compensator circuit(s) can include a converter circuit having an AC side and a DC side and configured to convert a DC voltage on the DC side to an AC signal at the AC side. The compensator circuit(s) can include a DC link coupled to the DC side of the converter circuit. The compensator circuit(s) can include a controller configured to measure a DC signal component between the load and the ground; to determine, based at least in part on the DC signal component, a compensating signal configured to counteract the DC signal component; and to inject, by the converter circuit, the compensating signal to counteract the DC signal component.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: June 28, 2022
    Assignees: Savannah River Nuclear Solutions, LLC, Clemson University
    Inventors: Klaehn W. Burkes, Vincent J. Ceyssens, Johan H. R. Enslin, Moazzam Nazir
  • Patent number: 11366066
    Abstract: Apparatus include an atmospheric pressure glow discharge (APGD) analyte electrode defining an analyte discharge axis into an APGD volume, and a plurality of APGD counter electrodes having respective electrical discharge ends directed to the APGD volume, wherein the APGD analyte electrode and the APGD counter electrodes are configured to produce an APGD plasma in the APGD volume with a voltage difference between the APGD analyte electrode and one or more of the AGPD counter electrodes. An electrode can be integrated into an ion inlet. Apparatus can be configured to perform auto-ignition and/or provide multi-modal operation through selectively powering electrodes. Electrode holder devices are disclosed. Related methods are disclosed.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: June 21, 2022
    Assignees: Battelle Memorial Institute, Clemson University Research Foundation, GAA Custom Engineering LLC
    Inventors: David W. Koppenaal, Ying Zhu, Edward D. Hoegg, R. Kenneth Marcus, Gordon A. Anderson, Chris Anderson, Tyler Williams
  • Patent number: 11357281
    Abstract: A force generator applying a force load against a facemask. A first load cell carrying a first portion of the facemask at an attachment point of the facemask where the facemask is attachable to a helmet. A second load cell carrying a second portion of the facemask at another attachment point of the facemask where the facemask is attachable to a helmet. A first attachment platform carrying the first load cell, wherein the first attachment platform is laterally movable in at least two degrees of freedom. A second attachment platform carrying the second load cell, wherein the second attachment platform is laterally movable in at least two degrees of freedom. The force generator directs the contact plate against the facemask to cause a horizontal deformation of the facemask and a lateral movement of the attachment platforms to allow for repeatable force load testing on a single facemask.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: June 14, 2022
    Assignee: CLEMSON UNIVERSITY RESEARCH FOUNDATION
    Inventors: John DesJardins, Gregory S. Batt, Alexander Bina
  • Patent number: 11320584
    Abstract: Accelerating photonic and opto-electronic technologies requires breaking current limits of modern chip-scale photonic devices. While electronics and computer technologies have benefited from “Moore's Law” scaling, photonic technologies are conventionally limited in scale by the wavelength of light. Recent sub-wavelength optical devices use nanostructures and plasmonic devices but still face fundamental performance limitations arising from metal-induced optical losses and resonance-induced narrow optical bandwidths. The present disclosure instead confines and guides light at deeply sub-wavelength dimensions while preserving low-loss and broadband operation. The wave nature of light is used while employing metal-free (all-dielectric) nanostructure geometries which effectively “pinch” light into ultra-small active volumes, for potentially about 100-1000× reduction in energy consumption of active photonic components such as phase-shifters.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: May 3, 2022
    Assignee: Clemson University
    Inventors: Judson D. Ryckman, Nazmus Sakib
  • Publication number: 20220125071
    Abstract: Disclosed herein are various organic plant protein compositions including a balanced amino acid profile with no chemical residues. Further disclosed herein are methods for creating organic plant protein compositions from organic plant material(s). In some embodiments, the organic plant protein composition includes pea protein, sorghum protein, organic baking powder, and organic vinegar.
    Type: Application
    Filed: October 27, 2021
    Publication date: April 28, 2022
    Applicant: Clemson University
    Inventors: Dilrukshi Thavarajah, Pushparajah Thavarajah
  • Patent number: 11312807
    Abstract: Provided is a copolymer exhibiting self-healing properties. The copolymer comprises first units comprising first pendant groups wherein the first pendant groups are alkyls having at least 1 to no more than 6 carbons. Second units comprising second pendant groups are alkyls having at least 2 to no more than 8 carbons. The first units and second units are in a molar ratio of 45/55 to 55/45 and the pendant groups form an inter-pendant space having a volume of at least 80 Ang.3 to no more than 140 Ang.3. The copolymer comprises no more than 3 adjacent first units and no more than 3 adjacent second units.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: April 26, 2022
    Assignee: Clemson University Research Foundation
    Inventor: Marek W. Urban
  • Patent number: 11275031
    Abstract: Devices and methods of providing a high-performance optical sensor disclose a sensor comprised of a porous material designed to have a multilayer rib-type or multilayer pillar-type waveguide geometry. The resulting porous nanomaterial multilayer-rib or multilayer-pillar waveguide design is optically capable of achieving ˜100% confinement factor while maintaining small mode area and single-mode character. Fabrication of the device is enabled by an inverse processing technique, wherein silicon wafers are first patterned and etched through well-established techniques, which allows porous nanomaterial synthesis (i.e., porous silicon anodization) either at the wafer-scale or at the chip-scale after wafer dicing. While ˜100% is an optimal target, typical devices per presently disclosed subject matter may operate with ˜98-99+%, while allowing for some design adjustments to be made if necessary, and still maintaining high sensitivity. i.e., >85-90% confinement suitable in some applications.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: March 15, 2022
    Assignee: Clemson University
    Inventors: Judson Ryckman, Gabriel Allen, William Frederick Delaney, Tahmid Talukdar
  • Patent number: 11253167
    Abstract: Systems and methods for detecting metal clips inserted within a portion of a body of a patient are disclosed herein. In one embodiment, a clip detector assembly includes a detector having a ferrous member, a transmitting coil around the ferrous member and configured to induce a current in the metal clip, and a receiving coil around the ferrous member and configured to receive a magnetic field generated by the current induced in the metal clip. The assembly can further include a control circuit having a band-pass filter configured to pass electrical signals induced by the magnetic field from the receiving coil that are within at most 35 kHz of a resonance frequency of the metal clip. The assembly still further includes a user notification component configured to alert a user to a location of the metal clip.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: February 22, 2022
    Assignees: MUSC Foundation for Research Development, Clemson University Research Foundation
    Inventors: Nancy DeMore, Delphine Dean, Scott R. Slaney, Melissa McCullough, Cody Jordan, Joseph R. Wilson, III
  • Patent number: 11221473
    Abstract: Devices and methods for super-resolution optical microscopy are described. Devices include an optical multiplexer to develop an excitation/illumination optical beam that includes alternating pulses of different profiles. Devices also include a signal processing unit to process a sample response to excitation/illumination beam and to subtract the neighboring pulses of the different profiles from one another on a pulse-to-pulse basis. Devices can be incorporated in existing confocal microscopy designs. As the subtraction effectively reduces the volume of the response signal, the spatial resolution of the systems can be markedly improved as compared to previously known optical microscopy approaches.
    Type: Grant
    Filed: March 5, 2018
    Date of Patent: January 11, 2022
    Assignee: Clemson University Research Foundation
    Inventors: Yang Li, Tong Ye, Xun Chen
  • Patent number: 11192297
    Abstract: A composite filament for use in additive manufacturing such as fused filament fabrication is described along with methods of its construction and use. The composite filament includes a single continuous filament (e.g., a continuous carbon roving) and a polymer (e.g., a high glass transition polymer) in intimate contact. The composite filament is formed through immersion of the continuous filament in a solution of the polymer. The composite filament can be combined with an additional formation material in an additive manufacturing process.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: December 7, 2021
    Assignees: University of South Carolina, Clemson University Research Foundation, TIGHITCO. Inc.
    Inventors: Michael Johannes Leonardus Van Tooren, Igor Luzinov, Nikolay Borodinov, Wout De Backer, Arturs Peteris Bergs
  • Patent number: 11162913
    Abstract: A method is disclosed for analysis of the impedance behavior of electrochemical impedance circuits or the Transfer Function for input-output systems, utilizing the symmetry of the phase angle response with the Log of the frequency to allow for determination of the lower frequency half of the impedance response over Log frequency based only on information from the upper half response. The underlying analytical basis for the symmetry of the phase angle and the methods for applying this analysis are applicable to simple R-C circuits, Randle circuits, Constant Phase Element (CPE)-Randles and coating model circuits. Symmetric functions describing the derivative of the phase angle, ?, with respect to the Log of the frequency can be used to determine the circuit elements requiring only the high frequency information. Only knowledge of the high frequency-based response is needed to know how the low frequency range behaves.
    Type: Grant
    Filed: March 19, 2020
    Date of Patent: November 2, 2021
    Assignee: Clemson University
    Inventors: Jeremy L. Gilbert, Piyush Khullar