Patents Assigned to The Hong Kong Polytechnic University
  • Voltage balancing circuit
    Patent number: 10418825
    Abstract: A voltage balancing circuit is applied to a power supply system. The power supply system comprises N power storage devices. The voltage balancing circuit comprises: N switches, N capacitors and a controller; the N switches are respectively connected to the N serial power storage devices; the N switches are respectively connected to the first terminals of the N capacitors; the second terminals of the N capacitors are connected to a common neutral line; the controller is connected to the N switches through a control line to control the switching of the N switches. The voltage balancing circuit avoids power loss when balancing the voltage of a plurality of serial power storage devices, and is small in size and low-cost, and balances voltage quickly.
    Type: Grant
    Filed: June 2, 2015
    Date of Patent: September 17, 2019
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Ka Wai Eric Cheng, Yuanmao Ye, Xiangdang Xue
  • Preparation of nanostructured titanium
    Patent number: 10400321
    Abstract: The present disclosure relates to the preparation of bulk nanostructured pure titanium at cryogenic temperatures using rolling, allowing the whole microstructures of pure titanium to be refined into the one that the mean grain size is smaller than 100 nm.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: September 3, 2019
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventor: Guangping Zheng
  • Method for preparing aqueous MnOink and capacitive energy storage devices comprising MnO
    Patent number: 10395851
    Abstract: In one aspect, the present disclosure relates to an improved method of preparing concentrated MnO2 ink with increased efficiency and cost effectiveness. The method involves mixing KMnO4 solution with highly crystalline carbon particles (HCCPs) with average diameters less than 800 nm at 30-60° C. for at least 8 hours. The present disclosure further relates to a symmetric supercapacitor device comprising MnO2 coated electrodes and a solid state ionic liquid as electrolyte, as well as an interdigital transparent SC (IT-SC) device comprising aqueous MnO2 ink.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: August 27, 2019
    Assignee: The Hong Kong Polytechnic University
    Inventors: Jiasheng Qian, Jikang Yuan, Shu Ping Lau
  • Interactive exoskeleton robotic knee system
    Patent number: 10390973
    Abstract: An interactive exoskeleton robotic knee system for assist walking and gait training. The system comprises of an exoskeleton framework to be attached to the thigh and shank of the user's leg; electric motor; mechanical lock; motion sensor assembled on the lower limb unit, and a control box. The system provides extension and flexion movement in the knee joint.
    Type: Grant
    Filed: June 21, 2015
    Date of Patent: August 27, 2019
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Kai-Yu Tong, Corinna Ursula Ockenfeld, Ling Fung Yeung, Sze Kit Ho, Hon-Wah Wai, Man-Kit Pang
  • Preparation of nanostructured titanium at cryogenic temperatures for medical implant applications
    Patent number: 10385435
    Abstract: This invention is in the preparation of bulk nanostructured pure titanium at cryogenic temperatures using equal channel angular pressing and rolling, allowing the whole microstructures of pure titanium to be refined into the one that the mean grain size is smaller than 100 nm.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: August 20, 2019
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventor: Guangping Zheng
  • Reversible wavelength channels for optical communication networks
    Patent number: 10382158
    Abstract: An optical transmission system comprises at least one first connection point and one second connection point arranged to transmit and receive at least one channel signal transmitted via at least one optical means connecting the first connection point and the second connection, wherein each of the at least one channel signal is reversibly configurable to be transmitted in either a first direction or a second direction between the first connection point and the second connection point. A method of transmitting at least one channel signal between a first connection point and a second connection point via at least one optical media in an optical transmission system, wherein each of the at least one channel signal is reversibly configurable to be transmitted in either a first direction or a second direction between the first and the second connection points.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: August 13, 2019
    Assignees: The Hong Kong Polytechnic University, Versitech Limited
    Inventors: Chun-yin Li, Ping-Kong Alexander Wai, Victor On-Kwok Li
  • Photoluminescent nanoparticles and their synthesis and uses
    Patent number: 10316246
    Abstract: The present invention discloses a method of preparing polymeric photoluminescent dots in water using inexpensive non-conjugated polymers. The resulting polymeric photoluminescent dots display the following properties: excellent water dispersibility, low toxicity, high absorptivity, good photo-stability and high quantum yield. The photoluminescent properties are not influenced by aggregation-caused quenching effect. The method is amenable to scale-up and is environmentally friendly.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: June 11, 2019
    Assignee: The Hong Kong Polytechnic University
    Inventors: Pei Li, Yuan Yao, Dechao Niu
  • Photocatalyst
    Patent number: 10315191
    Abstract: A photocatalyst includes a composite fiber having at least two crystalline semi-conductors that provide a heterojunction structure in the composite fiber.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: June 11, 2019
    Assignee: Hong Kong Polytechnic University
    Inventors: Wallace Woon Fong Leung, Chun Pei
  • APPARATUS AND METHOD FOR IMPARTING FALSE TWIST TO A YARN
    Publication number: 20190127893
    Abstract: An apparatus for imparting false twist to a staple yarn comprising a yarn guide for guiding a staple yarn along a path and a false twist device comprising a convex surface for engagement with a staple yarn so as to impart a force to the staple yarn when the staple yarn engages with and traverses the convex surface of the false twist device, and wherein the relative positioning between the yarn guide and the convex surface of the false twist device is adjustable such that, when a staple yarn is engaged with the convex surface of the false twist device and extends between the yarn guide and the false twist device, the amount of contact between the staple yarn and the convex surface of the false twist device can be controlled.
    Type: Application
    Filed: November 1, 2017
    Publication date: May 2, 2019
    Applicant: The Hong Kong Polytechnic University
    Inventors: Xiaoming TAO, Rong YIN
  • Spectacle lens
    Patent number: 10268050
    Abstract: A spectacle lens can inhibit ametropia of the eyes and ensure full visibility. The spectacle lens comprises: first refraction areas and second refraction areas. Each first refraction area has a first refraction force that may be based on a prescription for correcting the ametropia of the eyes. Each second refraction area has a refraction force different from the first refraction force and may function to focus images on the positions except the retina of the eyes, to inhibit the development of the ametropia. Near the central part of the lens, the second refraction areas form a plurality of independent island-shaped areas, and the first refraction areas form the areas beyond the areas of the second refraction areas.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: April 23, 2019
    Assignees: HOYA LENS THAILAND LTD., THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Chi Ho To, Siu Yin Lam, Takashi Hatanaka, Yasutake Masuda
  • Heterogeneous microarray based hybrid upconversion nanoprobe/nanoporous membrane system
    Patent number: 10266403
    Abstract: The invention relates to a microarray design of hybrid upconversion nanoparticles on a nanoporous anodized alumina membrane heterogeneous assay for simultaneous detection of multiple oligonucleotides, for example, oligonucleotides from different types of viruses.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: April 23, 2019
    Assignee: The Hong Kong Polytechnic University
    Inventors: Jianhua Hao, Mo Yang, Ming-Kiu Tsang, Weiwei Ye
  • Methods, devices, and systems for inhibiting ocular refractive disorders from progressing
    Patent number: 10231897
    Abstract: A method for retarding or reversing progression of myopia of a viewer contains the steps of using an immersive or non-immersive device to create a plurality of image planes in the eye of the viewer. While an image plane is located on the retina, at least one image plane is not on the retina, thereby generating myopic defocus. Immersive and non-immersive devices and systems for such a method are also described.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: March 19, 2019
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Yan Yin Tse, Siu Yin Lam, Chi Ho To
  • Alkyne-, azide- and triazole-containing flavonoids as modulators for multidrug resistance in cancers
    Patent number: 10208025
    Abstract: A triazole bridged flavonoid dimer compound library was efficiently constructed via the cycloaddition reaction of a series of flavonoid-containing azides (Az 1-15) and alkynes (Ac 1-17). These triazole bridged flavonoid dimers and their precursor alkyne- and azide-containing flavonoids were screened for their ability to modulate multidrug resistance (MDR) in P-gp-overexpressed cell line (LCC6MDR), MRP1-overexpressed cell line (2008/MRP1) and BCRP-overexpressed cell line (HEK293/R2 and MCF7-MX100). Generally, they displayed very promising MDR reversal activity against P-gp-, MRP1- and BCRP-mediated drug resistance. Moreover, they showed different levels of selectivity for various transporters. Overall, they can be divided into mono-selective, dual-selective and multi-selective modulators for the P-gp, MRP1 and BCRP transporters.
    Type: Grant
    Filed: October 18, 2016
    Date of Patent: February 19, 2019
    Assignees: The Hong Kong Polytechnic University, The Royal Institution for the Advancement of Learning/McGill University
    Inventors: Larry Ming Cheung Chow, Tak Hang Chan, Kin Fai Chan, Iris Lai King Wong, Man Chun Law
  • Network attack detection method
    Patent number: 10193910
    Abstract: It is described a network attack detection method. A topology analysis on network is conducted to obtain a probing path set containing at least one probing path. A first probing path contained in the probing path set is probed by using a probing pattern to obtain a performance metric of the first probing path. It is determined whether the first probing path is subjected to network attack according to the performance metric and a control performance metric.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: January 29, 2019
    Assignees: The Hong Kong Polytechnic University, Tencent Technology (Shenzhen) Company Limited
    Inventors: Lei Xue, Zhiwei Liu, Xianneng Zou, Jingang Hou, Xiapu Luo, Edmond W. W. Chan, Pei Tu, Yuru Shao
  • Information processing method and device
    Patent number: 10178204
    Abstract: It is described an information processing method and device. It is received a request for service data from a client device. In response to the request for service data, it is sent at least two probing packets which contain the service data to the client device on a forward path which is from a server to the client device. It is obtained timing information, which includes: a time stamp corresponding to the service data, a time stamp corresponding to the request for the service data, and time stamps corresponding to at least two backward-path packets sent by the client device on a backward path, the backward path being from the client device to the server. It is determined according to the timing information a one-way path metric.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: January 8, 2019
    Assignees: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED, THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Xiapu Luo, Jingang Hou, Zhiwei Liu, Xianneng Zou, Juhong Wang, Lei Xue, Yajuan Tang, Weigang Wu
  • EDIBLE OIL ANALYSIS SYSTEM AND METHOD
    Publication number: 20180364210
    Abstract: The present disclosure provides a method and system for analysing one or more edible oil samples. In an embodiment the disclosure provides for calibrating the matrix-assisted laser desorption/ionisation mass spectrometry (MALDI-MS) data obtained for one or more edible oil samples to obtain calibrated spectral data; and comparing the calibrated spectral data derived from the one or more samples against a library of calibrated MALDI-MS spectra for a plurality of edible oil samples to determine the most likely composition of the one or more edible oil samples.
    Type: Application
    Filed: June 20, 2017
    Publication date: December 20, 2018
    Applicant: The Hong Kong Polytechnic University
    Inventors: Zhongping YAO, Cheuk Chi Albert NG, Tsz-tsun NG, Suying LI
  • Synthesis method for cathode material in lithium-sulfur battery
    Patent number: 10147941
    Abstract: The present invention relates to a method for synthesizing graphene/sulfur composite, involving the steps of mixing graphene oxide (GO) with a hydrogen sulfide (H2S)-releasing agent in a sealed vessel, causing the H2S-releasing agent to release hydrogen sulfide, and then allowing the hydrogen sulfide to react with the graphene oxide at an elevated temperature and pressure to form said graphene/sulfur composite.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: December 4, 2018
    Assignee: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Linfeng Fei, Yu Wang
  • CESIUM TUNGSTEN BRONZE-BASED SELF-CLEANING NANO HEAT-INSULATION COATING MATERIAL AND PREPARATION METHOD THEREOF
    Publication number: 20180340082
    Abstract: The present disclosure provides a cesium tungsten bronze-based self-cleaning nano heat-insulation coating material, and method of preparing the same. Cesium tungsten bronze nanoparticles are prepared by hydrothermal method using WCl6 and CsOH.5H2O as raw materials, PVP as a surfactant and acetic acid as an acid catalyst. TiO2 nanoparticles are prepared from TiCl4. Subsequently ball milling and dispersing of the cesium tungsten bronze nanoparticles, the TiO2 nanoparticles, and a silane coupling agent with water to obtain an aqueous slurry containing cesium tungsten bronze/TiO2 composite particles is performed. The concentration of the aqueous slurry containing cesium tungsten bronze/TiO2 composite particles is adjusted to obtain a self-cleaning nano heat-insulation coating material.
    Type: Application
    Filed: March 1, 2018
    Publication date: November 29, 2018
    Applicant: The Hong Kong Polytechnic University
    Inventors: Lin LU, Yuanhao WANG, Hong ZHONG, Yan HU
  • LED automotive tail lamp set
    Patent number: 10132463
    Abstract: The present invention relates to LED lamps suitable for forming automotive lighting systems, made of high power lambertian LEDs and a TIR collimator lens. In the present invention, a novel TIR collimator lens is developed to collect the light emitted from the LED source and through a pillow lens array; redistribution occurs to form a light pattern meeting ECE requirements.
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: November 20, 2018
    Assignee: The Hong Kong Polytechnic University
    Inventors: Chi Fai Cheung, Sandy To, Wing Bun Lee, Jin Bo Jiang, Bo Wang
  • Synthesis and use of amine-containing flavonoids as potent anti-leishmanial agents
    Patent number: 10111854
    Abstract: The present invention relates to novel series of amine-containing flavonoids and compositions containing the compounds, as well as the synthesis and the use of the same. The invention also relates to methods of treatment and prevention of diseases, in particular, parasitic infections including Leishmaniasis, comprising administration of the compounds.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: October 30, 2018
    Assignee: The Hong Kong Polytechnic University
    Inventors: Larry Ming-Cheung Chow, Tak Hang William Chan, Kin-Fai Chan, Iris Lai King Wong, Wing-Yiu Kan