Patents Assigned to Kent State University
  • Patent number: 11444427
    Abstract: A lasing device includes an active layer comprising a cholesteric liquid crystal material and a laser dye, and a liquid crystal cell including spaced apart substrates defining a cell gap in which the active layer is disposed. The substrates include electrodes arranged to bias the active layer into an oblique helicoidal (ChOH) state. At least one substrate of the liquid crystal cell is optically transparent for a lasing wavelength range of the device.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: September 13, 2022
    Assignees: Kent State University, The University Court of the University of Aberdeen
    Inventors: Jie Xiang, Andrii Varanytsia, Fred Minkowski, Oleg D. Lavrentovich, Peter Palffy-Muhoray, Corrie T. Imrie, Daniel E. Paterson, John M. Storey
  • Patent number: 11434426
    Abstract: A fast flexoelectro-optic switching device containing bimesogen-doped and polymer-stabilized vertical standing helix (PSVSH) in a cholesteric liquid crystal. The PSVSH device exhibits a response time of less than 0.7 millisecond, high contrast and negligible hysteresis which is suitable for applications including blur-free displays, field-sequential color displays and active optical elements.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: September 6, 2022
    Assignee: Kent State University
    Inventors: Liang-Chy Chien, Vinay Joshi, Kai-Han Chang
  • Publication number: 20220249598
    Abstract: Compositions targeting sperm calcineurin may be used as topical and reversible contraceptives. The compositions may include calcineurin inhibitors such as tacrolimus (e.g. FK506) and/or Cyclosporin A. The compositions may be gels, creams, or lotion-based formulations and may be used reversibly and locally for both males and females.
    Type: Application
    Filed: June 10, 2020
    Publication date: August 11, 2022
    Applicant: Kent State University
    Inventors: Srinivasan VIJAYARAGHAVAN, Souvik DEY, Alaa EISA
  • Patent number: 11378477
    Abstract: An apparatus for measuring normal and shear stress at a surface. The apparatus includes a substrate; and a plurality of sensing units on the substrate. Each sensing unit includes a mechanical transducer having a receiving surface and a sensing surface; and a plurality of normal force sensors between the sensing surface and the substrate.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: July 5, 2022
    Assignee: KENT STATE UNIVERSITY
    Inventors: Mykhailo Pevnyi, Tianyi Guo, Fred Minkowski, Vincent Hetherington, Hiroshi Yokoyama, Peter Palffy-Muhoray
  • Publication number: 20220181653
    Abstract: A testing device for tubular solid oxide fuel cells (SOFC) includes a housing within which the tubular SOFC is mounted. The housing includes suitable inlets and outlets to allow a fuel gas, such as hydrogen, and an oxidant, such as air or oxygen, to interact with the anode and cathode of the tubular SOFC. In addition, the housing is formed of suitable material for placement in a heating device, such as a tubular furnace or a miniature tubular heater. A temperature sensor and computing device may monitor the temperature of the tubular SOFC in order to control the operation of the tubular heating device. In addition, the device provides electrical current collectors for coupling to the anode and cathode of the SOFC, which may be removable and reusable.
    Type: Application
    Filed: February 22, 2022
    Publication date: June 9, 2022
    Applicant: Kent State University
    Inventor: Yanhai Du
  • Publication number: 20220168262
    Abstract: A fatty acid-like platinum (IV) prodrug is useful for treating cancer (e.g., ovarian cancer). The fatty acid-like platinum (IV) prodrug may be used in combination with a M1 macrophage.
    Type: Application
    Filed: March 17, 2020
    Publication date: June 2, 2022
    Applicant: Kent State University
    Inventors: Yaorong ZHENG, Zhizhou YUE
  • Patent number: 11296342
    Abstract: A testing device for tubular solid oxide fuel cells (SOFC) includes a housing within which the tubular SOFC is mounted. The housing includes suitable inlets and outlets to allow a fuel gas, such as hydrogen, and an oxidant, such as air or oxygen, to interact with the anode and cathode of the tubular SOFC. In addition, the housing is formed of suitable material for placement in a heating device, such as a tubular furnace or a miniature tubular heater. A temperature sensor and computing device may monitor the temperature of the tubular SOFC in order to control the operation of the tubular heating device. In addition, the device provides electrical current collectors for coupling to the anode and cathode of the SOFC, which may be removable and reusable.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: April 5, 2022
    Assignee: Kent State University
    Inventor: Yanhai Du
  • Publication number: 20220079200
    Abstract: Modified cell lines and methods for use in the production of cultured meat are disclosed. The inventive methods provide for insertion of cell cycle regulatory genes or genes that encode for animal myoglobin into the genome of an animal cell to proliferate and flavor cell productions, followed by excising the inserted genes to terminate proliferation.
    Type: Application
    Filed: July 21, 2021
    Publication date: March 17, 2022
    Applicant: KENT STATE UNIVERSITY
    Inventors: Jessica KRIEGER, Kristy WELSHHANS
  • Patent number: 11243408
    Abstract: A speckle reduction system is provided and includes a speckle reduction component and a control module. The speckle reduction component includes electrode layers and a liquid crystal layer. The liquid crystal layer is disposed between the electrode layers and configured to receive light from a coherent light source. The control module is configured to (i) supply a first voltage signal having a first voltage to the electrode layers to provide a first speckle pattern output, and (ii) supply a second voltage signal having a second voltage to the electrode layers to provide a second speckle pattern output, wherein the first voltage and the second voltage are greater than zero. The control module is configured to transition between providing the first voltage signal and the second voltage signal in less than at least one of half an integration time of a human eye or 8 milliseconds.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: February 8, 2022
    Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, KENT STATE UNIVERSITY
    Inventors: John Ernest Harden, Jr., Liang-Chy Chien, Kai-Han Chang, Thomas A. Seder
  • Patent number: 11221538
    Abstract: Liquid crystal lenses of different apertures with suppressed chromatic aberration utilizing twisted vertical alignment configuration are demonstrated. A plurality of substrates are provided with electrodes, including a patterned electrode to generate a lens effect. The liquid crystal material is homeotropically aligned, such as via alignment layers. Setting the ratio between cell thickness and chiral pitch of the cholesteric liquid crystals provides correction of axial chromatic aberrations of electrically-tunable focal lengths in the device.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: January 11, 2022
    Assignee: KENT STATE UNIVERSITY
    Inventors: Liang-Chy Chien, Kai-Han Chang, Andrii Varanytsia
  • Publication number: 20210325358
    Abstract: A sensor for detecting non-hazardous and especially hazardous gases and/or vapors comprises a liquid crystal cell generally having a standard substrate and a conductive electrode layer thereon. An alignment layer is desirably located on the electrode layer and contains one or more types of metal nanoparticles that cover at least a portion of the alignment layer. The nanoparticles contain at least one type of ligand thereon that is capable of sensing a specific type of non-hazardous or hazardous gas. The sensor is very sensitive and can detect the gases or vapors contained within air, or the like, up to 1 part per million.
    Type: Application
    Filed: June 22, 2021
    Publication date: October 21, 2021
    Applicant: Kent State University
    Inventors: Torsten HEGMANN, Elda HEGMANN, Marianne PRÉVÔT, Ahlam NEMATI, Julie VANEGAS GARCIA
  • Patent number: 11136632
    Abstract: A method for controlling self-propelled particles includes providing the particles to a liquid crystalline medium having predesigned local ordering. The method may control at least one of: a local concentration, trajectory, and net flow of self-propelled particles.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: October 5, 2021
    Assignee: KENT STATE UNIVERSITY
    Inventors: Oleg D. Lavrentovich, Chenhui Peng, Taras Turiv, Yubing Guo, Qi-Huo Wei
  • Patent number: 11133170
    Abstract: A solution-cathode glow discharge mass spectrometry (SCGD-MS) apparatus comprises a SCGD source and a mass spectrometer. The SCGD source may comprise conductive rods, a power source, and a capillary. A method for ionizing an analyte comprises flowing an electrically conductive liquid onto a conductive rod, applying an electric potential to a second conductive rod such that a plasma discharge forms between the first conductive rod and the electrically conductive liquid to produce ions, and separating the ions in a mass spectrometer. The analyte may be a polypeptide that may be contacted with trypsin. The analyte may be a solid, liquid, gas, chemical complex, or ion in solution. The method may comprise sequencing the polypeptide.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: September 28, 2021
    Assignees: Indiana University Research and Technology Corporation, Kent State University
    Inventors: Jacob T. Shelley, Kelsey L. Williams, Gary M. Hieftje, Andrew J. Schwartz
  • Patent number: 11099445
    Abstract: A display panel and a display apparatus are provided. The display panel includes a first substrate and a second substrate which are arranged oppositely. A liquid crystal layer is filled between the first substrate and the second substrate, the liquid crystal layer has dielectric anisotropy of parameter in a range from ?1 F/m to 1 F/m, a sum of a bending flexural coefficient and a splaying flexoelectric coefficient of the liquid crystal layer is greater than 1 pc/m, and liquid crystal molecules in the liquid crystal layer are deflected by a flexoelectric effect, so that deflecting speed of the liquid crystal molecules in the liquid crystal layer is improved and the response time of the liquid crystal layer is shortened.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: August 24, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., KENT STATE UNIVERSITY
    Inventors: Guangkui Qin, Dengke Yang, Xiaochen Zhou
  • Publication number: 20210214613
    Abstract: An ionic liquid crystal elastomer composition includes a liquid crystal elastomer; and an ionic liquid.
    Type: Application
    Filed: January 11, 2021
    Publication date: July 15, 2021
    Applicants: Kent State University, The University of Akron
    Inventors: Antal Jákli, Chenrun Feng, Chathuranga Prageeth Hemantha Rajapaksha, Vikash Kaphle, Thein Kyu
  • Publication number: 20210173241
    Abstract: Films, systems, and methods for measuring shear stress are described. In an embodiment, the film comprises an optically transmissive polymer matrix disposed on a substrate; and a liquid crystal dispersed in the optically transmissive polymer matrix, wherein at least a portion of the liquid crystal protrudes from or is exposed on a side of the optically transmissive polymer matrix opposite the substrate.
    Type: Application
    Filed: December 7, 2020
    Publication date: June 10, 2021
    Applicants: University of Washington, Kent State University
    Inventors: Dana Dabiri, John West, Junren Wang
  • Publication number: 20210175526
    Abstract: A multifunctional manifold for use with electrochemical devices having a spiral cross-section, such as spiral solid-oxide fuel cells, includes an interface that is configured to be placed in operative communication with such devices. The interface includes a fuel interface section and an oxidant interface section that are each configured as spirals. The spiral interface sections also include channels that are configured to be placed in operative communication with corresponding spiral channels of the electrochemical device to deliver operating gases, such as fuel gas and oxidant gas, thereto. In addition to delivering operating gases to the fuel cells, the multifunctional manifold is also configured to act as an electrical current collector and a heat exchanger.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 10, 2021
    Applicant: Kent State University
    Inventors: Yanhai Du, Aliia Mubarak Moh Maar
  • Publication number: 20210159519
    Abstract: A testing device for tubular solid oxide fuel cells (SOFC) includes a housing within which the tubular SOFC is mounted. The housing includes suitable inlets and outlets to allow a fuel gas, such as hydrogen, and an oxidant, such as air or oxygen, to interact with the anode and cathode of the tubular SOFC. In addition, the housing is formed of suitable material for placement in a heating device, such as a tubular furnace or a miniature tubular heater. A temperature sensor and computing device may monitor the temperature of the tubular SOFC in order to control the operation of the tubular heating device. In addition, the device provides electrical current collectors for coupling to the anode and cathode of the SOFC, which may be removable and reusable.
    Type: Application
    Filed: July 25, 2017
    Publication date: May 27, 2021
    Applicant: Kent State University
    Inventor: Yanhai Du
  • Patent number: 11016308
    Abstract: An optical display device includes a coherent light source generating a coherent light beam in visible, ultraviolet, or infrared ranges. The coherent light beam is directed at a liquid crystal component. A plurality of liquid crystals and a plurality of nanoparticles having an average diameter of ?about 450 nm are disposed in an interior compartment. An electrical source is in electrical communication with the first and the second electrodes. When no voltage or current is applied, a filtered light beam transmitted or reflected from the liquid crystal component exhibits a first speckle contrast ?about 0.28. When voltage or current is applied, the microparticles are induced to move and the filtered light beam has a second speckle contrast that is ?about 0.2 and in certain aspects may be ?about 0.03. A method of reducing speckle in an optical device having a coherent light source is also provided.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: May 25, 2021
    Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, KENT STATE UNIVERSITY
    Inventors: Kai-Han Chang, John Harden, Liang-Chy Chien
  • Publication number: 20210132404
    Abstract: An optical device (e.g., display device) includes a coherent light source generating a coherent light beam in a visible, ultraviolet, or infrared range. The coherent light beam is directed at a liquid crystal component. A plurality of liquid crystals and a plurality of microparticles having an average diameter of ?about 450 nm to ?about 20 micrometers (?m) are disposed in an interior compartment. An electrical source is in electrical communication with the first and the second electrodes. When no voltage or current is applied, a filtered light beam transmitted or reflected from the liquid crystal component exhibits a first speckle contrast ?about 0.6. When voltage or current is applied, the microparticles are induced to move and the filtered light beam has a second speckle contrast that is ?about 0.6. A method of reducing speckle in an optical device having a coherent light source is also provided.
    Type: Application
    Filed: November 6, 2019
    Publication date: May 6, 2021
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, KENT STATE UNIVERSITY
    Inventors: John HARDEN, Liang-Chy CHIEN, Kai-Han CHANG