Patents Assigned to Queen's University at Kingston
  • Publication number: 20240110250
    Abstract: Methods, probe sets, kits, and compositions for gene deletion assays are disclosed. In some embodiments, the methods relate to preparing probes for a deletion assay, performing a deletion assay, or optimizing a deletion assay. In some embodiments, the methods and probe sets can provide reduced artifactual deletion frequency, for example, when analyzing samples subject to truncation artifacts. In some embodiments, the methods and probe sets can distinguish between small and large deletions.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 4, 2024
    Applicants: QUEEN'S UNIVERSITY AT KINGSTON, KINGSTON HEALTH SCIENCES CENTRE
    Inventors: Jeremy A. Squire, Maisa Yoshimoto
  • Patent number: 11936691
    Abstract: A cloud communication architecture addresses shortcomings of traditional security protocols (e.g., SSL/TLS) in cloud computing, providing security for data-in-transit and authenticity of cloud users (CUs) and cloud service providers (CSPs). The architecture also protects the communication channel against attacks such as man-in-the-middle (MITM) (including eavesdropping, sniffing, identity spoofing, data tampering), sensitive information disclosure, replay, compromised-key, repudiation and session hijacking attacks. The architecture includes a high-performance cloud-focussed security protocol. The protocol efficiently utilizes the strength and speed of features such as symmetric block encryption with Galois/Counter mode (GCM), cryptographic hash, public key cryptography, and ephemeral key-exchange, and provides faster reconnection facility for supporting frequent connectivity and dealing with connection trade-offs. Embodiments have enhanced security against the above-noted attacks, and are superior to TLSv1.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: March 19, 2024
    Assignee: Queen's University at Kingston
    Inventors: Md. Abu Faisal, Mohammad Zulkernine
  • Patent number: 11911095
    Abstract: A method for generating a propagation and velocity maps for cardiac wavefront propagation including cardiac arrhythmia, sinus rhythm, and paced rhythm. Activation time information is generated in the absence of any time alignment reference, wherein an estimated activation time is a weighted summation of potentially nonlinear and nonorthogonal candidate functions (CFs) selected from a bank of CFs. Time alignments between sequential recordings may be done by including binary level functions among selected CFs. Embodiments are applicable to single catheter mapping and sequential mapping, and are robust as confirmed by the ability to generate propagation maps and conduction velocity in the presence of multiple colliding wavefronts. The propagation and conduction velocity maps may be used for one or more of diagnosing cardiac arrhythmia, localizing cardiac arrhythmia, guiding catheter ablation therapy of cardiac arrhythmia, and guiding cardiac pacing therapy.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: February 27, 2024
    Assignees: Queen's University at Kingston, Kingston Health Sciences Centre
    Inventors: Mohammad Hassan Shariat, Damian P. Redfearn
  • Patent number: 11874501
    Abstract: A photonic device configured to perform matrix vector multiplication operations at high frequencies is provided. The vector being multiplied by the matrix is defined by vector components at specific wavelengths. The device includes a first waveguide and a second waveguide. A series of tunable microring resonators (MRRs) are coupled to the first waveguide and to a respective series of passive delay rings (PDRs), which are coupled to the second waveguide. Each MRR/PDR pair defines a tunable matrix component (tunable weight) for a respective wavelength component of the vector. A series of controllable delay elements (CDEs) such as all-pass filters are coupled to the first waveguide, upstream from the tunable MRRs. Any tuning dependent group delay caused by the MRR/PDR pairs can be compensated by controlling the CDEs such that each wavelength components has substantially a same delay as the other wavelength components.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: January 16, 2024
    Assignees: HUAWEI TECHNOLOGIES CANADA CO., LTD., QUEEN'S UNIVERSITY AT KINGSTON, THE UNIVERSITY OF BRITISH COLUMBIA
    Inventors: Mitchell Nichols, Enxiao Luan, Mahsa Salmani, Armaghan Eshaghi, Lutz Hans-Joachim Lampe
  • Patent number: 11859081
    Abstract: A biobased additive is provided that is both a nucleating and a reinforcing agent when added to thermoplastic polyester (e.g., biopolyesters). A composite material, which is an additive-reinforced biopolyester, was prepared and improved thermo-mechanical properties were quantified. This composite material is a new class of biobased material that offers a sustainable, environmentally-friendly solution for packaging and other applications.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: January 2, 2024
    Assignee: Queen's University at Kingston
    Inventors: Naqi Najafi Chaloupli, Marianna Kontopoulou, Heather Leigh Simmons, Praphulla
  • Patent number: 11840766
    Abstract: An etchant is described that includes an N-heterocyclic carbene and optionally an appropriate solvent. The etchant was effective at etching a metallic surface having, for example, a metal oxide and/or metal, in both solution phase and vapour-phase. The etchant has been shown to effectively etch oxidized copper and tungsten.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: December 12, 2023
    Assignees: QUEEN'S UNIVERSITY AT KINGSTON, UNIVERSITY COURT OF THE UNIVERSITY OF ST. ANDREWS
    Inventors: Brian E. Mariampillai, Abrar R. E. Alrashed, Cathleen M. Crudden, J. Hugh Horton, Christopher J. Baddeley, Christian R. Larrea
  • Publication number: 20230356114
    Abstract: Anionic switchable hydrophilicity solvents (ASHS) that can be reversibly converted between hydrophobic and hydrophilic forms are described. The ASHS comprise a carboxylic acid, a water-soluble base, water, and addition and removal of an acidic gas (CO2) effects the conversion between the hydrophobic and hydrophilic forms. A system and method for forming the ASHS are described, as well as applications utilizing the ASHS, including a method for separating a selected substance from a mixture, a method of removing gas from polymeric foam, and a method of extracting a hydrophobic material from a solid that is at least partially coated by the hydrophobic material.
    Type: Application
    Filed: March 7, 2023
    Publication date: November 9, 2023
    Applicant: QUEEN'S UNIVERSITY AT KINGSTON
    Inventors: Philip G. Jessop, Meghan McKeeman, Igor Tadeu da Cunha, Maedeh Ramezani, Alana Lloyd-Smith
  • Patent number: 11801528
    Abstract: The present application provides stable, carbene-functionalized composite materials, and methods and uses thereof. These carbene-functionalized composite materials comprise a material having a metal surface, and a carbene monolayer that is uniform, contaminant-free (metal oxide, etc), and more stable than thiol-functionalized monolayers. Uses of such carbene-functionalized composite materials include semi-conducting materials, microelectronic devices, drug delivery or sensing applications.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: October 31, 2023
    Assignee: Queen's University at Kingston
    Inventors: Cathleen M. Crudden, J. Hugh Horton, Olena V. Zenkina, Iraklii I. Ebralidze, Christene Anne Smith
  • Patent number: 11799154
    Abstract: A hybrid energy storage device has at least two half cells, wherein each half cell includes an electrode comprising an electrically conductive high surface area material incorporating an electrolyte comprising a dissolved species that can exist in more than two redox states, and at least one separator that separates the at least two half cells and allows transfer of selected charge carriers between the half cells. After an initial charging, a redox pair of one half cell is different from the redox pair of the other half cell. The hybrid energy storage device operates as a battery for low power applications, and as a supercapacitor for high power applications. The hybrid energy storage device may be flexible.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: October 24, 2023
    Assignee: Queen's University at Kingston
    Inventors: Ali Khazaeli, Dominik Barz
  • Patent number: 11795148
    Abstract: Compounds that are inhibitors of retinoic acid inducible P450 (CYP26) enzymes. The compounds have retinoid activity, are resistant to CYP26-mediated catabolism, act as inhibitors of CYP26B1, and are used for treating diseases that are responsive to retinoids.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: October 24, 2023
    Assignee: Queen's University at Kingston
    Inventors: Donald Andrew Cameron, Martin Petkovich, Uttam Saha
  • Patent number: 11760639
    Abstract: A method of exfoliating layered, shearable material is described. Examples are provided including exfoliation of graphite to form graphene nanoplatelets. Also described is a machine for preparing nanoplatelets that includes a chamber whose volume can be increased by pressure exerted by the exfoliated product. Composites of graphene nanoplatelets and polyamide exhibited improved flexural modulus compared to that of graphite composites while impact strength was unaffected.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: September 19, 2023
    Assignee: Queen's University at Kingston
    Inventors: Osayuki Osazuwa, Marianna Kontopoulou
  • Patent number: 11711023
    Abstract: A control circuit for an isolated power converter includes a first sensing circuit that senses a secondary side output voltage and produces a pulse wave modulation (PWM) signal having a duty cycle that is proportional to a value of the secondary side output voltage. The PWM is transferred across the converter isolation barrier to the primary side, and a primary side circuit receives the PWM signal and outputs a control signal. A controller determines the value of the secondary side output voltage from the control signal and uses the value to control primary side power switching devices of the isolated power converter to regulate the secondary side output voltage at a selected value.
    Type: Grant
    Filed: May 12, 2022
    Date of Patent: July 25, 2023
    Assignee: Queen's University at Kingston
    Inventors: Yan-Fei Liu, Yang Chen, Binghui He, Wenbo Liu, Bo Sheng
  • Patent number: 11684258
    Abstract: The invention provides devices and methods for non-invasive monitoring and measuring of intraocular pressure (IOP) of a subject. Embodiments include a lens that is adapted to fit on the subject's eye, a microstructure disposed in or on the lens, the microstructure having at least one feature that exhibits a change in shape and/or geometry and/or position on the lens in response to a change in curvature of the lens. When the curvature of the lens changes in response to a change in IOP, a corresponding change in shape and/or geometry and/or position of the feature may be used to determine the change in IOP. The change in the feature is detectable in digital images of the lens taken with a mobile electronic device such as a smartphone.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: June 27, 2023
    Assignees: Queen's University at Kingston, Kingston Health Sciences Centre
    Inventors: Yong Jun Lai, Kong Ying Xie, Robert James Campbell
  • Patent number: 11679123
    Abstract: The invention provides a pharmaceutical composition of hyaluronic acid comprising repeating units of a disaccharide comprising glucuronic acid and N-acetylglucosamine, wherein a portion of the N-acetyl groups of the N-acetylglucosamine have been independently replaced with a group of the formula ā€”Nā€”C(O)ā€”(C2-C4)-alkyl for treating hyperuicemia and gouty arthritis. Studies show that this composition is promising as an anti-gout therapeutic agent, which combines both anti-inflammatory actions as well as anti uracemic effects.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: June 20, 2023
    Assignees: Queen's University at Kingston, Jilin University
    Inventors: Yin Gao, Tassos Anastassiades
  • Patent number: 11628226
    Abstract: Disclosed are novel gene therapy constructs containing both HEXA and HEXB genes to treat GM2 gangliosidoses, including Sandhoff disease and Tay-Sach's disease. Also described are co-treatments using chaperone and anti-inflammatory agents to enhance the effects of gene therapy.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 18, 2023
    Assignees: Queen's University at Kingston, Kingston Health Sciences Centre
    Inventor: Jagdeep Singh Walia
  • Patent number: 11611228
    Abstract: Controllers and methods for controlling a resonant power converter output voltage include operating the power converter according to a control period comprising an on cycle operation mode for a duration T_on that produces a first voltage Vo1 and an off cycle operation mode for a duration T_off that produces a second voltage Vo2. Vo1 is produced using a first switching frequency for a first selected number of switching cycles corresponding to the on time T_on. The converter output voltage or the converter input and output voltages may be sensed and used to determine the switching frequency during the on cycle operation mode and the duration of the off cycle operation mode. The final output voltage of the power converter is regulated to a selected value based on a ration of (T_on):(T_on+T_off). The controllers and methods may be used with power converters in power delivery devices to accept wide input voltage ranges compatible with devices such as cell phones, tablet computers, and notebook computers.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: March 21, 2023
    Assignee: Queen's University at Kingston
    Inventors: Yan-Fei Liu, Yang Chen, Wenbo Liu
  • Patent number: 11579149
    Abstract: Bioluminescent biosensors useful for monitoring and/or quantifying, in vitro or in vivo, activity of the Hippo signaling pathway. The biosensors monitor LATS kinase activity or YAP-TEAD interaction. The biosensors may be used in methods for monitoring and/or quantifying in real-time, in vitro or in vivo, activity of the Hippo signaling pathway, wherein the activity may be LATS kinase activity and/or YAP-TEAD interaction. The biosensors may be provided in kits for monitoring and/or quantifying in real-time, in vitro or in vivo, activity of the Hippo signaling pathway, wherein the activity may be LATS kinase activity and/or YAP-TEAD interaction.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: February 14, 2023
    Assignee: Queen's University at Kingston
    Inventors: Xiaolong Yang, Taha Azad, Kazem Nouri
  • Patent number: 11547325
    Abstract: A method and apparatus for quantifying differences in human sensorimotor performance useful for diagnosing, assessing, and/or detecting brain injury and/or a neurological disorder, or identifying exceptional performance in a subject. In a task a subject's limb movement is restricted to a limited workspace and an object moves towards the limb. The objective of the task is for the subject to contact the object with the limb within a set time period. During the task a perturbation directed to the object and/or limb, or other feature of the environment, may occur on some trials, requiring a rapid motor correction in order to contact the object, or the subject may receive an alternative instruction on whether to interact with the object. Position data and/or motion data and/or kinetic data of the limb or portions thereof with respect to a presented object are obtained, and a data set is acquired for a plurality of trials.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: January 10, 2023
    Assignee: Queen's University at Kingston
    Inventors: Stephen H. Scott, Kayne Park
  • Patent number: 11535745
    Abstract: A biobased additive is provided that is both a nucleating and a reinforcing agent when added to thermoplastic polyester (e.g., biopolyesters). A composite material, which is an additive-reinforced biopolyester, was prepared and improved thermo-mechanical properties were quantified. This composite material is a new class of biobased material that offers a sustainable, environmentally-friendly solution for packaging and other applications.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: December 27, 2022
    Assignee: Queen's University at Kingston
    Inventors: Naqi Najafi Chaloupli, Marianna Kontopoulou, Heather Leigh Simmons, Praphulla
  • Patent number: 11522510
    Abstract: A transconductance amplifier (TCA) implemented with high electron mobility transistors (HEMTs) in a push-pull amplifier output stage provides a voltage controlled constant high output current to loads ranging from 10 m? to 1? with a bandwidth of 25 MHz. A driving stage for the HEMTs is implemented with variable gain amplifiers that amplify the input voltage signal and provide bias for the HEMTs. An automatic gain control may be connected between the TCA output and the variable gain amplifiers to ensure a constant current output for a varying load.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: December 6, 2022
    Assignee: Queen's University at Kingston
    Inventors: Carlos Saavedra, Arthur Liraneto Torres Costa