Patents Assigned to Versitech Limited
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Patent number: 11864978Abstract: A computer-implemented bone-implant system evaluation method for application of mesh-free analysis of a bone-implant system for evaluation of performance of a bone-implant system for an implant implanted within the bone structure at an anatomical site, said method comprising (i) receiving a set of bone structure data set, wherein set of bone structure data includes data indicative of the bone structure at an anatomical site; (ii) inputting an implant data set and inputting the position of the implant data set, wherein the implant is selected based upon the biomechanical requirements for the anatomical site and the position and of the implant data set is indicative of the position of the implant with respect to the anatomical site, wherein implant data set includes data representative of the geometry and materials properties of the implant; (iii) creating a bone-implant model, wherein said bone implant-model includes a mesh-free model of trabecular bone at the anatomical site wherein the bone-implant model isType: GrantFiled: September 7, 2017Date of Patent: January 9, 2024Assignee: VERSITECH LIMITEDInventors: Sloan Austin Kulper, Hing Wan Alfonso Ngan, Xinshuo Christian Fang, Margaret Guo, Weijia William Lu, Ka Li Frankie Leung
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Patent number: 11852754Abstract: System and method of ultrasound imaging methodology are provided. The system and method can include directing an array to transmit sets of cascaded titled ultrasound waves towards a tissue sample, decoding reflected signals through summing, subtracting, and delay operations. The reflected signals can be reconstructed to provide a final decoded output.Type: GrantFiled: December 5, 2018Date of Patent: December 26, 2023Assignee: Versitech LimitedInventors: Yang Zhang, Yuexin Guo, Wei-Ning Lee
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Patent number: 11839694Abstract: Compositions that include nanoscale structured materials or precursors thereof (e.g., self: assembling peptides) are described. The compositions can include other substances (e.g., a vasoconstrictor). Also described are methods for using the compositions to promote hemostasis, to protect the skin or wounds from contamination, to decontaiminate a site upon removal of previously applied compositions that provided a protective coating, and to inhibit the movement of bodily substances other than blood. The compositions are also useful in isolating tissue, removing tissue, preserving tissue (for, e.g., subsequent transplantation or reattachment), and as bulking, stabilizing or hydrating agents. Medical devices that include the compositions (e.g., a stent or catheter), bandages or other wound dressings, sutures, and kits that include the compositions are also described.Type: GrantFiled: April 5, 2016Date of Patent: December 12, 2023Assignees: Massachusetts Institute of Technology, Versitech LimitedInventors: Rutledge Ellis-Behnke, Yu-Xiang Liang, Gerald E. Schneider, Kwok-Fai So, David K. C. Tay, Shuguang Zhang
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Patent number: 11826425Abstract: Enteroviruses, such as EV-A71, have been found to utilize hWARS as a cell surface receptor, with expression ofhWARS rendering cells susceptible to enteroviral infection. Reduction in hWARS cell surface activity reduces susceptibility to enteroviral infection and provides a mode for treatment or prevention of enteroviral infection and its sequelae. Similarly, expression of hWARS in cultured cells and animal models provides models for understanding enteroviral disease mechanisms and the development of vaccines and/or pharmaceuticals for preventing or treating enteroviral disease.Type: GrantFiled: September 13, 2017Date of Patent: November 28, 2023Assignee: VERSITECH LIMITEDInventors: Philip Man Lung Yeung, Fuk Woo Jasper Chan, Manson Fok, Johnson Yiu-Nam Lau, Kwok-Yung Yuen
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Publication number: 20230358782Abstract: A nano scale robotic system for single cell DNA sequencing of a strand of DNA positioned on a slide utilizes an atomic force microscope (AFM) having an end effector in the form of a cantilever with a tip. The AFM causes its cantilever tip to scan over the base pairs of the DNA strand. A pair of spaced-apart electrodes at the tip makes contact with opposite sides of the DNA strand and the current between bases of the DNA strand is measured by a current measurement system connected to the electrodes. An artificial intelligence-based data analytic system determines the DNA sequence based on the current from the current measuring system. The AFM tip is guided over the DNA strand by comparing compressed desired intensity local scan images and compressed actual intensity local scan images and using the difference to control the location of the tip.Type: ApplicationFiled: October 27, 2022Publication date: November 9, 2023Applicants: VERSITECH LIMITED, City University of Hong KongInventors: Ning Xi, Song Wang, Pengtao Liu, Zhiyong Sun, Lixin Dong, Chaojian Hou, Donglei Chen, Wenqi Zhang
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Patent number: 11786636Abstract: A simple, highly flexible and scalable platform for making functional complex tissues with heterogeneity and irregularity is provided. The method includes combining undifferentiated cells, such as pluripotent or multipotent stem cells, with a biomaterial to make multiple undifferentiated or naïve subunits, exposing the undifferentiated or naïve subunits to different cell culture environments for induction of differentiation towards different lineages as required by that complex tissue, and combining the then functional subunits with or without the undifferentiated subunits. The differentiated subunits thus combined can be cultured under biological, chemical, and/or physical culture conditions suitable to fine-tune the structural and functional properties of the bioengineered complex tissue to form a bioengineered tissue graft that mimics the structural and functional characteristics of native complex tissue. The bioengineered tissue graft can then used to replace dysfunctional tissue.Type: GrantFiled: June 14, 2011Date of Patent: October 17, 2023Assignee: VERSITECH LIMITEDInventors: Barbara Pui Chan, Hiu Wa Cheng, Daniel Tsz Kit Chik, Kenneth Man Chee Cheung, Keith Dip Kei Luk
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Patent number: 11705729Abstract: The present invention provides a power control circuit connectable to a load adapted to receive a power supply, the power control circuit adapted to absorb power from the power supply and adapted to deliver power to the power supply to stabilize at least one electrical parameter of the power supply. The present invention also provides an associated method of stabilizing at least one electrical parameter of a power supply connectable to a load, the method including absorbing power from the power supply or delivering power to the power supply. The at least one electrical parameter of the power supply includes parameters such as voltage and frequency.Type: GrantFiled: October 3, 2011Date of Patent: July 18, 2023Assignee: VERSITECH LIMITEDInventors: Shu Yuen Ron Hui, Chi Kwan Lee, Felix Fulih Wu
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Patent number: 11705730Abstract: The present invention provides a power control circuit connectable to a load adapted to receive a power supply, the power control circuit adapted to absorb power from the power supply and adapted to deliver power to the power supply to stabilize at least one electrical parameter of the power supply. The present invention also provides an associated method of stabilizing at least one electrical parameter of a power supply connectable to a load, the method including absorbing power from the power supply or delivering power to the power supply. The at least one electrical parameter of the power supply includes parameters such as voltage and frequency.Type: GrantFiled: March 30, 2017Date of Patent: July 18, 2023Assignee: VERSITECH LIMITEDInventors: Shu Yuen Ron Hui, Chi Kwan Lee, Felix Fulih Wu
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Patent number: 11688833Abstract: A nanostructure fabricated on a semiconductor light-emitting device induces strain in the active region. The active device includes at least one quantum heterostructure, in which the strain changes the extent of Quantum Confined Stark Effect, and thus modifies the wavelength of light emission. By mixing strain relaxation and strain induction effects there is a spectral broadening of the light emission, providing polychromatic light emission.Type: GrantFiled: May 17, 2021Date of Patent: June 27, 2023Assignee: VERSITECH LIMITEDInventors: Hoi Wai Choi, Wai Yuen Fu
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Publication number: 20230194412Abstract: An optical-resolution photoacoustic microscopy (OR-PAM) system for visualizing water content deep in biological tissue uses an all-fiber 1930-nm hybrid optical parametrically-oscillating emitter. The emitter includes a tunable laser source whose output is amplified by a first erbium-doped fiber amplifier (EDFA). The output of the first amplifier is modulated with a Mach-Zehnder amplitude modulator that receives an RF signal with a nanosecond pulse width and a multiple kilohertz repetition rate. A second EDFA further amplifies the signal and passes it to a fiber circulator that in turn delivers it to a 1950/1550 mm fiber wavelength-division-multiplexing coupler WDM. The coupler introduces the signal to a cavity that includes a spool of highly nonlinear fiber and a Thulium-doped fiber amplifier TDFA. From the TDFA the signal reaches a 50/50 fiber coupler that sends part to a second output TDFA and guides part back to the cavity through a port of the WDM.Type: ApplicationFiled: December 16, 2022Publication date: June 22, 2023Applicants: VERSITECH LIMITED, ADVANCED BIOMEDICAL INSTRUMENTATION CENTRE LIMITEDInventors: Kenneth Kin Yip WONG, Jiawei SHI, Mingsheng LI, Jiqiang KANG
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Patent number: 11668554Abstract: An electromechanical sensor and a method of sensing an object or a tactile input using the sensor. The sensor includes: a base provided with a magnetic sensor arranged to detect a change in magnetic flux at the position of the magnetic sensor; a flexible film adjacent to the magnetic sensor; and a magnetic element provided on the flexible film; wherein the magnetic element is arranged to move relative to the magnetic sensor when the flexible film is reversibly deformed by an external force applied to the flexible film.Type: GrantFiled: March 1, 2021Date of Patent: June 6, 2023Assignees: City University of Hong Kong, Versitech LimitedInventors: Yajing Shen, Youcan Yan, Jia Pan
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Patent number: 11667674Abstract: Cyclic lipopeptides having one or more modifications relative to daptomycin, and methods of making them are provided. The cyclic lipopeptides can be used as antibacterial agents. The daptomycin analogues are generated by chemical synthesis, which makes introduction of an unnatural amino acid and any modification into daptomycin possible. Pharmaceutical compositions and method of use thereof for the disclosed daptomycin analogues are also provided.Type: GrantFiled: March 24, 2017Date of Patent: June 6, 2023Assignee: VERSITECH LIMITEDInventors: Xuechen Li, Hoi Yee Chow
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Patent number: 11648524Abstract: The present invention relates to a method for controlling an ultrafast chemical reaction using a microfluidic reactor, and more specifically, the present invention relates to a method for controlling an ultrafast chemical reaction such as the Fries rearrangement reaction and the like by using a microfluidic reactor by the 3D metal printing technique.Type: GrantFiled: July 28, 2021Date of Patent: May 16, 2023Assignees: POSTECH ACADEMY-INDUSTRY FOUNDATION, VERSITECH LIMITEDInventors: Dong Pyo Kim, Ji Tae Kim, Hyune Jea Lee
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Publication number: 20230126179Abstract: A UV based surface disinfection system that consists of the UV light source, a robot arm, and an omni directional mobile base. The mobile robot can be programmed autonomously and be able to bring the UV light source to the centimeters away from surfaces to achieve effective and efficient surface disinfection. The mobile robot can navigate autonomously in a complicated environment to perform disinfection operation in a large area.Type: ApplicationFiled: October 20, 2022Publication date: April 27, 2023Applicant: VERSITECH LIMITEDInventors: Ning Xi, Ye Ma, Siyu Wang, Qingyang Wang, Jiajie Ye, Chun Kwok, Sheng Bi
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Patent number: 11626256Abstract: Devices that convert heat into electricity, and methods for a fabrication of the same are provided. The asymmetric thermo-electrochemical capacitor uses a GO-based positive electrode and a battery-type negative electrode to open up the operating voltage window and enhance the electrical discharge capacity for converting low-grade heat into electricity with excellent efficiency, fast thermo-charging time, and stable cycles. The thermo-electrochemical device includes a carbon-based positive electrode, a conductive polymer or a metal-organic framework as negative electrode, a current collector, and a porous separator.Type: GrantFiled: January 15, 2019Date of Patent: April 11, 2023Assignee: VERSITECH LIMITEDInventors: Shien Ping Feng, Xun Wang, Yu Ting Huang, Zeyang Zheng, Lei Wang, Ka Ho Li, Kaiyu Mu
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Patent number: 11585819Abstract: The invention provides fluorogenic compounds and probes that can be used as reagents for measuring, detecting and/or screening superoxide. The fluorogenic compounds of the invention can produce fluorescence colors, such as green, yellow, red, or far-red. The invention further provides fluorogenic compounds for selectively staining superoxide in the mitochondria of living cells. The invention also provides methods that can be used to measure, directly or indirectly, the presence and/or amount of superoxide in chemical samples and biological samples such as cells and tissues in living organisms, and a high-throughput screening methods for detecting or screening superoxide or compounds that can increase or decease the level of superoxide in chemical and biological samples.Type: GrantFiled: October 14, 2020Date of Patent: February 21, 2023Assignee: VERSITECH LIMITEDInventors: Dan Yang, Nai-Kei Wong, Jun Hu
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Patent number: 11517581Abstract: Methods and compounds for preventing and/or treating Zika virus (ZIKA) infection. And methods to screen for compound to prevent or treat Zika virus infection.Type: GrantFiled: June 15, 2017Date of Patent: December 6, 2022Assignees: VERSITECH LIMITED, FUNDACION UNIVERSITARIA SAN ANTONIOInventors: Shuofeng Yuan, Fuk Woo Jasper Chan, Kwok Yung Yuen, Helena Den Haan, Jorge Pena-García, José Pedro Cerón-Carrasco, Horacio Emilio Pérez-Sánchez
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Patent number: 11490975Abstract: MRI-guided robotics offers possibility for physicians to perform interventions remotely on confined anatomy. While the pathological and physiological changes could be visualized by high-contrast volumetric MRI scan during the procedure, robots promise improved navigation with added dexterity and precision. In cardiac catheterization, however, maneuvering a long catheter (1-2 meters) to the desired location and performing the therapy are still challenging. To meet this challenge, this invention presents an MRI-conditional catheter robotic system that integrates intra-op MRI, MR-based tracking units and enhanced visual guidance with catheter manipulation. This system differs fundamentally from existing master/slave catheter manipulation systems, of which the robotic manipulation is still challenging due to the very limited image guidance. This system provides a means of integrating intra-operative MR imaging and tracking to improve the performance of tele-operated robotic catheterization.Type: GrantFiled: June 22, 2017Date of Patent: November 8, 2022Assignee: VERSITECH LIMITEDInventors: Ka Wai Kwok, Ziyang Dong, Ziyan Guo, Kin Chung Denny Fu, Kit Hang Lee, Chim Lee Cheung
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Patent number: 11446280Abstract: Provided herein are compounds, derivatives thereof, and compositions including one or more of the compounds and derivatives, and methods for prevention and/or treatment of microbial infections and/or related diseases or conditions. The present compounds and/or derivatives thereof can be represented by Formula (I): The present methods include administering to a subject an effective amount of one or more compounds of Formula (I). In one embodiment, the microbial infections are bacterial infections. More specifically, the bacterial infections are staphylococcal infections.Type: GrantFiled: November 11, 2019Date of Patent: September 20, 2022Assignee: VERSITECH LIMITEDInventors: Yi Tsun Richard Kao, Peng Gao, Xuechen Li, Ming Liu
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Patent number: 11441198Abstract: Compositions and methods are described that provide prognostic determination of the severity of influenza infection based on the PDE3A status of an individual. Impaired PDE3A function is associated with severe symptoms on contracting influenza. Specific SNP mutations are identified that are associated with impaired PDE3A function, and primers and kits are provided that permit identification of these SNPs. Such information can also be combined with other patient data.Type: GrantFiled: June 30, 2017Date of Patent: September 13, 2022Assignee: VERSITECH LIMITEDInventors: Kai Wang Kelvin To, Jie Zhou, Johnson Yiu-Nam Lau, Kwok-Yung Yuen