Patents Assigned to Hong Kong Polytechnic University
  • Publication number: 20130202489
    Abstract: A gas sensor includes a plurality of loosely connected metal oxide nanoclusters configured to provide a porous structure, the metal oxide nanoclusters having an average characteristic length of 1 nm to 20 nm, and a coating made with catalytic material is deposited on an outer layer of the metal oxide nanoclusters.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 8, 2013
    Applicant: The Hong Kong Polytechnic University
    Inventors: Chung Wo ONG, Meng ZHAO, Jian Xing HUANG, Man Hon WONG
  • Patent number: 8486847
    Abstract: A fabric having moisture management function, which has a structure simulating plant structure and comprises at least two layers as follows: a bottom layer, which is of a leno or matt structure simulating main stem of plant, in which a number of yarns are grouped together to form a plurality of fabric units; said bottom layer can be adapted to be in contact with human skin; a top layer, which is of a plain weave structure, in which the yarns of said fabric unit further split in the top layer to form such a plain weave structure, simulating the branching in plant structure; wherein, in said fabric, water can be transported from the bottom layer to the middle layer and further to the top layer where it evaporates due to the improved capillarity of the yarns so as to provide better moisture management function.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: July 16, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Jintu Fan, Yu-cheung Szeto, Manas Kumar Sarkar
  • Patent number: 8478092
    Abstract: A single fiber Mach-Zehnder interferometer comprises an optical fiber having a core region and a cladding surrounding the core region, and a micro-cavity having part of the cladding and the core region removed, wherein the micro-cavity is adapted to receive a light beam and separate the light beam into a first light beam that propagates through the micro-cavity in an unguided mode, and a second light beam that propagates through the core region in a guided mode.
    Type: Grant
    Filed: November 2, 2009
    Date of Patent: July 2, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Dongning Wang, Ying Wang, Minwei Yang
  • Publication number: 20130136020
    Abstract: Disclosed is a method for achieving efficient and accurate measurement of path capacities of a communication network. The method includes the following steps: (a) transmitting a number of probes from a local node to a remote node over a forward network path, each probe contains at least one probe packet and can elicit the remote node to transmit a number of response packets to the local node over a reverse network path; (b) determine for each response packet a minimum round-trip packet delay between the time transmitting the probe and the time receiving the response packet; (c) calculate a number of pair-wise minimum delay differences from the minimum round-trip packet delays. The number of pair-wise minimum delay differences can be used as a measurement of the forward capacity, reverse capacity, faster-path capacity, slower-path capacity and a degree of capacity asymmetry between the local node and the remote node.
    Type: Application
    Filed: November 29, 2012
    Publication date: May 30, 2013
    Applicant: The Hong Kong Polytechnic University
    Inventor: The Hong Kong Polytechnic University
  • Patent number: 8409367
    Abstract: A method for producing a nanostructured austenitic sheet by consecutive martensite and austenite phase (?/??) transformations, in which the coarse grained austenite sheet transforms to nanocrystalline martensite by strain-induced transformation, and then generates reverse transformation to nanostructured austenite by warm rolling due to dynamic recrystallization.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: April 2, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Jian Lu, Aiying Chen
  • Patent number: 8411913
    Abstract: A method for partial fingerprint recognition, the method comprising the steps of extracting features including ridge orientations, valley images, minutiae, and pores from at least two fingerprint fragments, aligning the fingerprint fragments, matching the pores and minutiae on the fingerprint fragments after applying estimated alignment transformation, calculating a final matching score based on a pore matching score and a minutiae matching score, identifying a person based on a result of the final matching score.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: April 2, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: David Zhang, Qijun Zhao, Nan Luo, Guangming Lu
  • Patent number: 8409117
    Abstract: A wearable device (10) to assist with the movement of limbs (50, 51) connected at a joint (52), the device (50) comprising: a linear motion generating unit (20) to generate linear motion, the unit (20) having distal end portions operatively connected to the limbs (50, 51), whereby the linear motion generated by the unit (20) causes the limbs (50, 51) to move and pivot about the joint (52); a force measuring unit (30) to measure a change of force applied to the limbs or linear motion generating unit (20); and a displacement measuring unit (40) to measure the displacement of the linear motion generating unit (20) when linear motion is generated; wherein a predetermined distance of linear motion having a predetermined velocity is generated by the linear motion generating unit (20) to assist with the movement of the limbs (50, 51) based on the change of force measured by the force measuring unit (30) or the displacement measured by the displacement measuring unit (40).
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: April 2, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ching-Hsiang Cheng, Po Fat Chong, King Sau Wong
  • Publication number: 20130074913
    Abstract: A photovoltaic cell comprises a first electrode that includes a first transparent conductive substrate, a first layer having a plurality of first semiconductor nanofibers, and a second layer having a plurality of second semiconductor super-fine fibers, the first semiconductor nanofibers having an average diameter smaller than an average diameter of the second semiconductor super-fine fibers, a light absorbing material adsorbed to at least some of the first semiconductor nanofibers and second semiconductor super-fine fibers, a second electrode includes a second transparent conductive substrate, and electrolytes dispersed in the first and second layers.
    Type: Application
    Filed: September 26, 2011
    Publication date: March 28, 2013
    Applicant: The Hong Kong Polytechnic University
    Inventors: Wallace Woon-fong LEUNG, Lijun YANG
  • Patent number: 8404347
    Abstract: Amphiphilic, magnetic composite particles are comprised of cores and shells. The core contains both hydrophobic vinylic graft copolymer, hydrophobic vinylic homopolymer and magnetic nanoparticles, and the shell to which the hydrophobic vinylic polymer is grafted is a hydrophilic, nitrogen-containing polymer. Typically, the composite particles are made by a process which involves generating radicals on nitrogen atoms of the water-soluble polymer, and then initiating free-radical copolymerization of said vinylic monomer(s) and vinylic-coated magnetic nanoparticles, whereby vinylic polymer(s) undergo(es) phase separation and the vinylic coated magnetic nanoparticles are encapsulated within the vinylic polymer to form a composite latex.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: March 26, 2013
    Assignee: Hong Kong Polytechnic University
    Inventors: Pei Li, Kin Man Ho
  • Patent number: 8405491
    Abstract: A detection system (5) for assisting a driver when driving a vehicle, the system (5) comprising: a plurality of image capturing devices (98) mounted to the vehicle to capture images of the external environment of the vehicle; an image processing module (95) to identify potential hazards in real-time from the captured images and to superimpose information of the external environment relating to the identified potential hazards; and at least one display device (92) to display images processed by the image processing module in real-time; wherein the superimposed information is provided in an area of the display device (92) to ensure visual clarity of the images of the external environment.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: March 26, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Bernard Cheuk Mun Fong, Wan Chi Siu
  • Patent number: 8386065
    Abstract: A method for manufacturing smart pressure suits, comprises steps of: measuring physical properties of lycra materials and select a lycra material suitable for making the smart pressure monitored suits; measuring body contour data of a patient and computing a pressure value applied to a disease's part of the patient; inputting the body contour data into a computer and creating a pattern of the smart pressure monitored suits by the body contour data and the pressure value processed by a drawing process module in the computer; plotting a blueprint of the smart pressure monitored suits with a plotter controlled by the computer; and sewing the smart pressure monitored suits according to the selected lycra material and the blueprint. Said method makes whole manufacturing process shorten and the manufactured smart pressure monitored suits has advantages of aesthetic, comfort, good air permeability, less deformation after it is wore in a period of time.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: February 26, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventor: Wai Ping Cecilia Li-Tsang
  • Patent number: 8376968
    Abstract: A method for quantifying an intention of movement of a user, the method comprising: extracting a mechanomyogram (MMG) signal in response to surface vibration of a muscle of the user; and averaging the MMG signal by calculating the MMG root mean squared (RMS) amplitude or frequency variance in a predetermined time window; where an increasing RMS amplitude of the MMG signal corresponds to increasing muscle voluntary contraction or a decreasing frequency variance of the MMG signal corresponds to increasing muscle voluntary contraction.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: February 19, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Kin Fong Lei, Wallace Woon-Fong Leung
  • Patent number: 8374414
    Abstract: A method for assisting diagnosis of stroke by image analysis, the method comprising obtaining a scanned brain image of a patient, transforming the scanned brain image into a digitized brain image, removing bone and other artifacts from the digitized brain image, generating at least one circular adaptive region of interest on one side of the brain image, generating a binary mask of the circular adaptive region of interest, calculating the percentage of zeros from the binary mask within the circular adaptive region of interest, locating at least one corresponding circular adaptive region of interest on the other side of the brain image, and comparing the circular adaptive region of interest with the corresponding circular adaptive region on interest of the other side of the brain based on a plurality of texture attributes.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: February 12, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Fuk Hay Tang, Kei Shing Ng, Hung Kay Chow
  • Publication number: 20130029931
    Abstract: The preparation of Pleurotus tuber-regium polysaccharide functionalized nano-selenium hydrosol with anti-tumor activity includes the following steps: 1) at normal temperature and under normal pressure, adding a Vitamin C solution to an aqueous solution of Pleurotus tuber-regium polysaccharides, and mixing uniformly; 2) adding dropwise a selenium dioxide solution or a selenite solution to the solution while mixing uniformly; and 3) adding water to the solution to a pre-determined volume, to obtain a Pleurotus tuber-regium polysaccharide functionalized nano-selenium hydrosol when the red color of the product is no longer deepened. The polysaccharides are used to control the particle size of nano-selenium, to obtain functionalized nano-elemental selenium with high anti-tumor activity and low toxicity. The anti-tumor activity of the biologically active molecule polysaccharides and the physiological effect of nano-selenium are combined, and a synergistic anti-tumor effect is achieved.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 31, 2013
    Applicant: The Hong Kong Polytechnic University
    Inventors: Tianfeng Chen, Ka Hing Wong, Hua-Lian Wu, Wenjie Zheng, Man Kin Wong, Wing Yin Cornelia Man
  • Patent number: 8359123
    Abstract: A robotic system for rehabilitation using EMG signals to provide mechanical help includes EMG electrodes (6) sequentially connected in series, a DAS card (2) and a control portion (1), and further includes an actuator (3) connected to the DAS card (2) and an additional moment providing portion (4) connected to the actuator (3). The EMG electrodes sense EMG signals corresponding to the muscle of suffering joint, and input the sensed EMG signals to the control portion (1) through the DAS card (2). The control portion (1) uses the input EMG signals and a constant moment set as desired to calculate an additional moment to be applied to the suffering joint, and additional moment providing portion (4) is controlled to apply the corresponding additional moment to the suffering joint through the DAS card (2) and the actuator (3).
    Type: Grant
    Filed: April 28, 2007
    Date of Patent: January 22, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Kaiyu Tong, Rong Song
  • Publication number: 20130014577
    Abstract: A sensor for measuring flow speed of a fluid, comprising: a light-absorbing optical fiber having a fiber Bragg grating inscribed in the fiber; wherein light is emitted into the light-absorbing optical fiber to heat the optical fiber and the fiber Bragg grating, and when the fluid passes over the sensor, the flow speed of the fluid is determined by the rate of heat loss from the sensor, and the temperature of the sensor is determined from the wavelength shift of the central wavelength of the fiber Bragg grating.
    Type: Application
    Filed: July 12, 2011
    Publication date: January 17, 2013
    Applicant: The Hong Kong Polytechnic University
    Inventors: Hwayaw Tam, Aping Zhang, Shaorui Gao, Lok Hin Cho
  • Patent number: 8355543
    Abstract: A method for identifying a person based on their tongue is provided in which an image of a tongue of a person is compared to recorded details of tongues in a database. If a match is found, the person is identified.
    Type: Grant
    Filed: June 2, 2008
    Date of Patent: January 15, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: David Zhang, Zhi Liu
  • Patent number: 8349299
    Abstract: A method of imparting a shape memory effect to hair may include administrating an effective amount of a hair-conditioning agent to hair. The hair-conditioning agent may include a shape memory polymer selected from the group consisting of a polyurethane, an acrylic acid copolymer, a pyridine-based copolymer, and a pyrrolidone copolymer.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: January 8, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Jinlian Hu, Yong Zhu, Shaojun Chen, Hongsheng Luo, Jing Lu
  • Patent number: 8349343
    Abstract: The present invention describes a novel antibacterial treatment on textile materials using polymeric core-shell particles dispersing in water. These particles are prepared from a surfactant-free emulsion polymerization according to the method of U.S. Pat. No. 6,573,313 and have average particle sizes in the range of 100 to 1000 nm in diameter. When applied to a textile article, the particles form a uniform coating, which prevents the growth of bacteria and microbes. The treatment does not affect the fabric mechanical properties, hand feeling and appearance. Antibacterial activity on cotton is maintained even after 50 times of home laundering.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: January 8, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: John Haozhong Xin, Pei Li, Weijun Ye
  • Patent number: 8344007
    Abstract: A cantharimide compound may include the backbone of formula (1). R1, R2, R3, and R4 may be independently selected from the group consisting of H, C(O)OR5, C(O)R6, C(O)NR7R8, NR9C(O)R10, N—R11R12, O—R13, S—R14, P(O)(OR15)(OR16), As(O)(OR17)(OR18), SO2R19, SO3R20, and B(OR21). X1 to X4 may be independently selected from the group consisting of nitrogen and carbon, such that X1 to X4 are not all hydrogen. Y1, Y2 and R5 to R21 may be independently selected from the group consisting of hydrogen, C1-12-alkyl, -aryl, heteroaryl, and a bioactive polymer.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: January 1, 2013
    Assignee: The Hong Kong Polytechnic University
    Inventors: Johnny Cheuk-on Tang, Albert Sun-chi Chan, Kim-hung Lam, Chung-hin Chui, Stanton Hon Lung Kok, Marcus Chun Wah Yuen, Sau Hing Chan, Chor Hing Cheng, Filly Cheung