Patents Assigned to University of Hong Kong
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Patent number: 12375359Abstract: A computer-implemented method for determining a path arrangement of an infrastructure link network with a trunk-and-branch topology. The method includes: modelling a geographic terrain including three or more geographic locations that are connectable with each other via an infrastructure link network; determining a cost function associated with a cost for constructing the infrastructure link network that connects the three or more geographic locations; and determining a path arrangement of the infrastructure link network based on the modelled geographic terrain and by optimizing the cost function taking into account one or more constraints. The path arrangement of the infrastructure link network has a trunk-and-branch topology and includes: three or more infrastructure links that connect the three or more geographic locations, and one or more connection points each arranged between two or more of the infrastructure links.Type: GrantFiled: June 1, 2022Date of Patent: July 29, 2025Assignee: City University of Hong KongInventors: Tianjiao Wang, Bill Moran, Zengfu Wang, Moshe Zukerman, Xinyu Wang, Chao Guo
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Patent number: 12368864Abstract: A computer-implemented method for facilitating encoding of video data. The method includes performing an operation to determine prediction residuals associated with a unit of the video data, and, processing, using a neural network arrangement, the prediction residuals associated with the unit of the video data to determine model parameters associated with a rate-distortion model for the unit of the video data. The model parameters are arranged to facilitate encoding of at least the unit of the video data. The method can be applied to multiple ones of such unit of the video data.Type: GrantFiled: August 3, 2023Date of Patent: July 22, 2025Assignee: City University of Hong KongInventors: Sam Tak Wu Kwong, Yunhao Mao, Shiqi Wang
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Patent number: 12361697Abstract: A deep-learning method and systems for analyzing optical coherence tomography (OCT) images based on a convolutional neural network are provided. The method includes extracting a feature from one or more three-dimensional OCT volumetric scan images and classifying the OCT images with respect to diabetic macular edema (DME) based on results the feature extracted. The step of extracting a feature from one or more three-dimensional OCT volumetric scan images is performed by a neural network such as a neural network based on a ResNet-34 architecture. The method can further include extracting a feature from one or more two-dimensional (2D) OCT B-scan images and classifying the OCT images with respect to DME based on results of the 2D feature extracted. The step of extracting a feature from one or more 2D OCT B-scan images is performed by a neural network such as a neural network based on a ResNet-18 architecture.Type: GrantFiled: August 26, 2022Date of Patent: July 15, 2025Assignee: The Chinese University of Hong KongInventors: Yim Lui Carol Cheung, Pheng Ann Heng, Fangyao Tang, Xi Wang
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Patent number: 12350054Abstract: The present invention provides a stretchable and flexible multi-leads ECG monitoring apparatus having a primary circuitry encased in a thin and flexible polymer patch configured to be worn on a human body. At least four flexible leads are connected to the primary circuitry at a first end and are configured to be connected to ECG electrode patches at a second end. The ECG electrode patches being configured to be attached to a plurality positions on a human body. The wireless transmitter is configured to transmit the ECG monitoring signals to a receiving device for recording or displaying the ECG monitoring signal.Type: GrantFiled: June 12, 2022Date of Patent: July 8, 2025Assignee: City University of Hong KongInventors: Xinge Yu, Yiming Liu, Jingkun Zhou
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Patent number: 12350336Abstract: A compound including a general formula of D-L-A particularly with the structure of Formula (A). A nanoparticle of the compound of the present invention. A pharmaceutical composition including the compound of the present invention as an active ingredient and a pharmaceutically acceptable carrier. A method of treating a target tissue including administering to a patient in need thereof a compound of the present invention and administering to the target tissue radiation in an amount and of a wavelength effective to activate the compound. Also use of the compound of the present invention in preparation of a medicament for treating the target tissue by photodynamic therapy.Type: GrantFiled: February 1, 2022Date of Patent: July 8, 2025Assignee: City University of Hong KongInventors: Chun-Sing Lee, Shengliang Li, Yafang Xiao, Wencheng Chen
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Publication number: 20250216850Abstract: A moving object detection system and method is provided. The system includes an input module capturing a point cloud comprising measurements of distances to points on one or more objects and a detection module receiving the point cloud captured by the input module and configured to determine whether the objects are moving objects. The determination of moving objects is performed by determining whether currently measured points occlude any previously measured points, and/or whether the currently measured points recursively occlude any previously measured points, and/or whether the currently measured points are recursively occluded by any previously measured points.Type: ApplicationFiled: April 3, 2023Publication date: July 3, 2025Applicant: The University of Hong KongInventors: Fu ZHANG, Wei XU, Huajie WU
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Patent number: 12347939Abstract: An antenna for a phased array antenna. The antenna includes a substrate, a radiation element arranged on the substrate, and a radiation pattern shaping mechanism operable to reduce central radiation provided by the radiation element during operation.Type: GrantFiled: August 11, 2022Date of Patent: July 1, 2025Assignee: City University of Hong KongInventors: Kwok Wa Leung, Zhili Su, Kai Lu
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Patent number: 12348743Abstract: There is provided a computer-implemented method for learned video compression, which includes processing a current frame (xt) and previously decoded frame ({circumflex over (x)}t-1) of a video data using a motion estimation model to estimate a motion vector (vt) for every pixel, compressing the motion vector (vt) and reconstructing the motion vector (vt) to a reconstructed motion vector ({circumflex over (v)}t), applying an enhanced context mining (ECM) model to obtain enhanced context ({umlaut over (C)}E) from the reconstructed motion vector ({circumflex over (v)}t) and previously decoded frame feature (x?t-1), compressing the current frame (xt) with the assistance of the enhanced context ({umlaut over (C)}E) to obtain a reconstructed frame ({circumflex over (x)}?t), and providing the reconstructed frame ({circumflex over (x)}?t) to a post-enhancement backend network to obtain a high-resolution frame ({circumflex over (x)}t).Type: GrantFiled: June 21, 2023Date of Patent: July 1, 2025Assignee: City University of Hong KongInventors: Sam Tak Wu Kwong, Haifeng Guo, Shiqi Wang, Dongjie Ye
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Publication number: 20250207276Abstract: One aspect of the present invention is concerned with a method of preparing a catalyst for use in synthesizing ammonia from nitrate. The method has the steps of i) providing a nickel foam material, ii) removing an oxide layer on the nickel foam material, iii) subjecting the nickel foam material to cooper sulphate (Cu2SO4) solution for a predetermined period of time for forming a copper (Cu) dopped nickel foam electrode, and iv) subjecting the Cu dopped nickel foam electrode to an annealing treatment at a predetermined temperature for a predetermined period of annealing time in atmospheric air thus forming a catalyst of copper oxide-nickel oxide nickel foam (CuO/NiO@NF) with a heterostructure. Other aspects of the invention are concerned with a method of preparing an electrolytic cell for use in synthesizing of ammonia, and a method of synthesis of ammonia from nitrate.Type: ApplicationFiled: December 21, 2023Publication date: June 26, 2025Applicant: City University of Hong KongInventors: Johnny Chung Yin HO, Di YIN, Dong CHEN, Quan QUAN
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Publication number: 20250196213Abstract: A hot stamping method for pre-coated steel plate comprises performing a preliminary heat treatment on the pre-coated steel plate before hot stamping. The preliminary heat treatment comprising: (1) a step of heating and temperature holding involving: heating the pre-coated steel plate to 850-920° C. and holding the temperature for 7 to 15 minutes, or heating to 920-960° C. and holding the temperature for 5 to 10 minutes; (2) cooling the pre-coated steel plate to below 300° C. after the step of heating and temperature holding at a cooling rate not less than 5° C./s; and (3) optionally repeating the step of heating and temperature holding and the step of cooling one or more times. The preliminary heat treatment increases the alloying degree of the pre-coating layer, reduces the carbide structures in the steel plate matrix, and obtains a martensite and/or bainite matrix structure, so as to reduce damage to a stamping die.Type: ApplicationFiled: October 11, 2022Publication date: June 19, 2025Applicant: The University of Hong KongInventors: Mingxin HUANG, Zhou WANG
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Publication number: 20250195187Abstract: A devices and systems for removing dental plaque/oral biofilms from a target surface or all surfaces of a tooth contains a socket head, a socket ball, and a pair of opposing bilateral wings. The socket ball is mounted in a joint-housing of the socket head, forming a ball-and-socket joint. The bilateral wings are connected to the socket head and extend downwardly. Each wing may include one or more cleaning elements, such as water cannons, water cannon folds, mega-/micro-nipples, and/or mega-/micro-nipple coupled water cannons. A system containing the device typically includes one or more additional components configured to incorporate the device into an element for user operation and link the device to a flow path, providing a fluid/air flow path for supplying a liquid and/or air to the device.Type: ApplicationFiled: March 8, 2023Publication date: June 19, 2025Applicant: The University of Hong KongInventors: Tze Chuen NG, Lijian JIN, James Kit Hon TSOI
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Patent number: 12329537Abstract: The present invention provides a system for implementing a logistic regression classification mechanism to measure and assess a depth of anesthesia of an animal subject based on electroencephalography (EEG), which includes a signal pre-processor, an epoch generator, a feature extractor, a classifier, and a predictor. Related method of how to pre-process the raw data of EEG signal, epoch generation thereof, feature extraction from each epoch, classification based on extracted features, and prediction of different states of the animal subject based on a prediction decision mechanism is also provided. Classification accuracy of the present invention for 1-second and 10% overlapping epochs is about 94% with an average total system delay of about 12 ?s and low on-chip power consumption. The present system is entirely optimized, which leads to a 100% accurate channel prediction after a 7-second run-time on average.Type: GrantFiled: September 22, 2021Date of Patent: June 17, 2025Assignee: City University of Hong KongInventors: Abdelrahman Bakr Mohammed Abdelnaby Eldaly, Mehdi Hasan Chowdhury, Stephen Kugbere Agadagba, Ray Chak Chung Cheung, Leanne Lai Hang Chan
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Patent number: 12335368Abstract: A cryptosystem processor includes a twiddle factor memory, a SRDGT BFU, and a SPN. The twiddle factor memory has ZETA ports. The at least one SRDGT BFU has six input ports and four output ports and switchable among operation in DGT/IDGT/CWM mode, in which two of the input ports electrically communicate with the ZETA ports, respectively. The SRDGT BFU is configured to read and write two data points when working under the DGT/IDGT mode and is configured to read and write four data points when working under the CWM mode. The SPN electrically communicates with the SRDGT BFU and has at least one dual-port BRAM serving as memory cache configured to store polynomial, in which the SPN is configured to support the required number of data points reading or writing per cycle in the DGT/IDGT/CWM mode.Type: GrantFiled: June 19, 2023Date of Patent: June 17, 2025Assignee: City University of Hong KongInventors: Guangyan Li, Gaoyu Mao, Ray Chak Chung Cheung, Alan Hiu Fung Lam
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Patent number: 12326665Abstract: Displacement measurement systems, measurement methods and EUV lithography machines for quantum meta-structure elements are disclosed, which include: an entangled state light source generator, a meta-device, a collimating lens, a polarizing beam splitter, and a computing section. Left-rotation photon and the right-rotation photon are projected to the polarizing beam splitter, and the correlation between output ports of two polarizing beam splitters is counted for reading to measure the displacement of the meta-device element. The displacement of the meta-structure element is measured in a manner that realizes the correlation between the left-rotation photons and the right-rotation photons.Type: GrantFiled: October 20, 2023Date of Patent: June 10, 2025Assignee: City University of Hong KongInventors: Yubin Fan, Mu Ku Chen, Din Ping Tsai
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Patent number: 12310793Abstract: A system for processing photoacoustic and ultrasound imaging data includes processor(s) and memory storing program(s) configured to be executed by the processor(s). The program(s) include instructions for: obtaining ultrasound imaging data representative of an ultrasound image of the object, performing a speed of sound value optimization operation based on the ultrasound imaging data for facilitating image reconstruction, and performing an image reconstruction operation. The ultrasound imaging data is obtained from a system for photoacoustic imaging and ultrasound imaging.Type: GrantFiled: August 2, 2022Date of Patent: May 27, 2025Assignee: City University of Hong KongInventors: Lidai Wang, Yachao Zhang
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Publication number: 20250169265Abstract: The surface of low-dimensional perovskites plays a crucial role in determining their intrinsic properties. Thus, specific surfaces may be designed to obtain a desired characteristic and/or a functional structure. Further, surface passivation could also be applied to stabilize and optimize the state-of-the-art perovskite-based optoelectronics. CsPbBr3 microwires parallel arrays with specific (100)-terminated crystal planes were designed and fabricated to have excellent photodetection performance with long-term environment stability over 3000 hours. Further, environmental oxygen may be used to passivate the Br-vacancy-related trap states on the (100) surface and to create charge carrier nanochannels to enhance the (opto)electronic properties. The coupling effects between oxygen species and the specific terminated crystal planes of perovskites highlight the importance of surface engineering for designing and optimizing perovskite-based devices.Type: ApplicationFiled: November 20, 2023Publication date: May 22, 2025Applicant: City University of Hong KongInventors: Johnny Chung Yin HO, Dengji LI, You MENG, Yuxuan ZHANG
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Publication number: 20250158117Abstract: A method of fabricating a crack-free anionic network polymer (ANP) electrolyte membrane by conjugating anionic nodes (Monomer-Cl) with a short alkene possessing a C?C (carbon double bond) terminal group to form a structure with alkene moieties, mixing the modified anionic nodes with an ionic conductive polymer linker in organic solvent and exposing the mixture to ultraviolet (UV) light to triggers a polymerization process via click reaction to form a crack-free anionic network polymer carbon double bond (ANP-C) membrane. Forming a lithium battery from the membrane when the anionic nodes are lithium tetrakis 4-(chloromethyl)-2.3.5.6-tetrafluorophenyl) borate and the short alkene is 5-hexenol.Type: ApplicationFiled: November 1, 2024Publication date: May 15, 2025Applicant: The University of Hong KongInventors: Dongmyeong SHIN, Jingyi GAO, Jiaming ZHOU, Xiaoting MA, Eunjong KIM
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Publication number: 20250157712Abstract: Disclosed are a soft bistable magnetic actuator, a fatigue testing device, and an auto underwater vehicle. The soft bistable magnetic actuator includes a soft precursor. The soft precursor consisting of a soft deformable portion and a soft peripheral portion surrounded. The soft precursor is cast by injection molding, and the soft deformable portion is made of magnetic particles and polymer, and the soft peripheral portion is made of magnetic particles, a mixture of organic liquid and polymer, and the soft deformable portion is buckled by extracting the organic liquid by an organic solvent to shrink the soft peripheral portion.Type: ApplicationFiled: January 16, 2025Publication date: May 15, 2025Applicant: City University of Hong Kong Matter Science Research Institute (Futian)Inventors: Jian LU, Zhou CHEN, Yunhu HE, Lei WAN
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Patent number: 12300431Abstract: One embodiment includes an electromagnetic device for generating a magnetic field in a workspace. The electromagnetic device includes an elongated sleeve defining a hollow space and having an external surface, a magnetic core, and an electric coil wounded onto the external surface of the elongated sleeve and configured to generate the magnetic field when energized. The magnetic core has a first end, a second end, and a middle portion that is disposed between the first end and the second end and received in the hollow space. The first end is provided with a core tip that is shaped substantially as a cone and has a cone radius greater than zero.Type: GrantFiled: November 1, 2022Date of Patent: May 13, 2025Assignee: City University of Hong KongInventors: Dong Sun, Wah Shing Lam, Yingxin Huo
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Publication number: 20250135715Abstract: A method and apparatus for forming vascular-like channels involves liquid-in-liquid 3D printing utilizing two polymer solutions used as a printing ink and a matrix. Anionic polyacrylamide (APAM) is one of the polymer solutions and acts as the matrix material. Chitosan is the other polymer solution and acts as the printing ink. The chitosan printing ink is extruded through a print nozzle of a 3D printer onto the APAM matrix which covers the bottom of a petri dish while the nozzle is moved in a desired pattern for the channels. The chitosan and APAM polymer complexes self-assemble on the ink-matrix interface, locking chitosan polymers inside the matrix before they can spread and causing the formation of soft elastic membranous walls. The chitosan ink and APAM matrix can be removed after the polymer complex self-assembly. The printed chamber with membranous walls allows for liquid infusion to work as fluidic channels.Type: ApplicationFiled: October 10, 2024Publication date: May 1, 2025Applicants: The University of Hong Kong, Advanced Biomedical Instrumentation Centre LimitedInventors: Yafeng Yu, Ho Cheung Shum, Yi Pan, Jingxuan Tian, Wei Guo