Patents Assigned to Polytechnic University
  • Publication number: 20080134769
    Abstract: A transplanar liquid transport tester for fabrics, comprising: a liquid reservoir; a liquid-permeable support member having a first surface for supporting a fabric test sample, and a second surface for interfacing with liquid in the liquid reservoir; and means for maintaining a constant hydrostatic pressure in the liquid reservoir at the second surface of the support member for replenishing liquid through the support member to the first surface during testing.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Jintu Fan, Xiaoming Qian
  • Publication number: 20080135635
    Abstract: The present invention relates a method of dehumidifying an enclosed environment with a direct expansion air conditioning system, such direct expansion air conditioning system containing a two speed compressor and a two speed supply fan that allows the compressor and supply fan to run at high speeds in a steady-state or low speeds in a steady-state for better humidity control. Such a system allows for a more efficient, less costly system in comparison to single speed direct expansion air conditioner or direct expansion air conditioners with variable speed compressors and supply fans.
    Type: Application
    Filed: December 8, 2006
    Publication date: June 12, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Shiming Deng, Xiangguo Xu, Ming-yin Chan
  • Publication number: 20080139966
    Abstract: A tongue diagnosis system based on chromatic and textural features of a subject's tongue, which is based on Bayesian analysis of two sets of quantitative features, related to the color and texture of the tongue, respectively. The two sets of quantitative features are extracted from a digital tongue image of the tongue. The system includes several modules for image acquisition, tongue contour extraction, color and texture features extraction, and Bayesian analysis, respectively. These modules may be connected and configured in a way that a disease diagnosis process, from tongue image acquisition to an output of a diagnosis result, is progressing automatically.
    Type: Application
    Filed: December 7, 2006
    Publication date: June 12, 2008
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: David ZHANG, Bo PANG
  • Patent number: 7383625
    Abstract: Disclosed is a method of manufacturing a continuous disk winding. A high-temperature superconducting wire is lapped using Kapton films to insulate the high-temperature superconducting wire. The high-temperature superconducting wire is wound on a bobbin by a predetermined number of turns to form a layer of windings. An annular disk having a slit formed therein is fitted onto the bobbin. The slit is formed along the circumference of the disk and to be inclined from the inner side of the disk towards the outer side thereof. The high-temperature superconducting wire is inserted into the slit of the disk to pass through the annular disk smoothly along the inclined slit and wound again by the predetermined number of turns to form a next layer of windings. The above steps of fitting an annular disk, and inserting and winding the high-temperature superconducting wire are repeated to form multiple layers of windings.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: June 10, 2008
    Assignee: Korea Polytechnic University
    Inventors: Kyeong Dal Choi, Woo Seok Kim, Seung Wook Lee, Young In Hwang
  • Publication number: 20080128230
    Abstract: An magnetorheological damper useful in structural vibration control has a damper body and a moveable portion relative to the damper body. The damper includes an magnetorheological material contained within the damper body for resisting movement of the moveable portion. Rheology changes can be generated in the magnetorheological material owing to changes in a magnetic field, to which the magnetorheological material is exposed. The damper further includes at least a sensor embedded in the damper for monitoring an external force exerted on the damper, and for generating a signal to control the magnetic field and hence the resulting yield force and rheological damping of the damper in response to a variance in the external force.
    Type: Application
    Filed: June 6, 2007
    Publication date: June 5, 2008
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Siu Wing Or, Yiqing Ni, Yuanfeng Duan
  • Publication number: 20080128527
    Abstract: A liquid dispensing apparatus, including a hollow horn having a central cylindrical cavity and a piezoelectric ring having a central opening. The piezoelectric ring is coupled to the hollow horn such that the central opening is in communication with one end of the central cylindrical cavity. A mesh screen is provided at the other end of the central cylindrical cavity. Liquid is delivered to an inner surface of the mesh screen through the central opening of the piezoelectric ring and the central cylindrical cavity of the hollow horn, and is dispensed from an outer surface of the mesh screen in the form of fine liquid droplets.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 5, 2008
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventors: Helen Lai Wa Chan, Wencheng Xu, Kwok Ho Lam, Kin Wing Kwok
  • Patent number: 7381483
    Abstract: A magnetic core is made of a composite magnetic material having a relative permeability of between 1 and 29 at a frequency range from 20 kHz to 2.5 MHz. The composite magnetic material consists of cobalt and nickel particles having an average diameter in the range of 1 to 100 micrometers, and a polymer base binding the particles to form a core.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: June 3, 2008
    Assignee: The Hong Kong Polytechnic University
    Inventors: Ka Wai Eric Cheng, Chak Yin Tang, David Ki Wai Cheng, Hang Wu
  • Publication number: 20080113870
    Abstract: The present invention relates to a method for fabricating a filament type high-temperature superconducting wire in which a thin film type high-temperature superconducting wire is fabricated into a filament shape suitable for use with alternating current.
    Type: Application
    Filed: March 28, 2007
    Publication date: May 15, 2008
    Applicant: KOREA POLYTECHNIC UNIVERSITY
    Inventors: Hee Gyoun LEE, Gye Won HONG, Kyeong Dal CHOI
  • Publication number: 20080094636
    Abstract: This invention discloses to a type of fiber gas lasers and fiber ring laser gyroscopes based on these fiber gas lasers. The fiber gas lasers comprise of excitation gases, optical resonator and excitation source, etc. The optical resonator is made by connecting two selected arms of a single mode fiber coupler to the two ends of hollow-core fiber to form a ring resonator. The hollow-core of the fiber is filled with excitation gases to act as gain medium. The fiber laser is simple to construct, lower cost, and has adjustable size and good amplification performance. The fiber ring laser gyroscopes based on this novel type of gas lasers can be applied on robotics, automobile navigation, etc.
    Type: Application
    Filed: September 17, 2007
    Publication date: April 24, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Wei Jin, Xin Shi
  • Patent number: 7361908
    Abstract: A method of estimating a radiation dose deposited on a radiochromic film based on absorption measurements at least at two wavelengths as well as devices implementing the estimation method. The method includes the following steps: (a) measuring absorption values at a first wavelength and a second wavelength; (b) converting the absorption values at the two wavelengths to dose values at the corresponding wavelengths by using a calibration procedure; (c) obtaining a weighting factor curve (weighting factor vs. dose) at each wavelengths; and (d) obtaining an estimate of irradiation dose at the location on the radiochromic film by minimizing the objective function which takes the weighting factors and the dose values at both wavelengths as input.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: April 22, 2008
    Assignee: The Hong Kong Polytechnic University
    Inventors: Karl Ka Lok Fung, Kit Yee Lee
  • Patent number: 7358383
    Abstract: The present invention relates to synthetic green tea derived polyphenolic compounds, their modes of syntheses, and their use in inhibiting proteasomal activity and in treating cancers. The present invention is also directed to pharmaceutical compositions useful in methods of inhibiting proteasomes and of treating cancers.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: April 15, 2008
    Assignees: University of South Florida, McGill University, The Hong Kong Polytechnic University
    Inventors: Q. Ping Dou, Tak-Hang Chan, David M. Smith
  • Publication number: 20080075530
    Abstract: A bollard with connecting mechanism for connecting railings, comprising: a bollard body which is provided with at least two receiving parts concave inwardly on each of opposite surfaces thereof; at least two connectors, each of which includes a base and an ear extending from the base and having a connecting hole thereon for connecting the railing; wherein the base is accommodated in the receiving part, and the ear is selectively accommodated in the receiving part or exposed out of the receiving part according to whether railings need to be connected.
    Type: Application
    Filed: September 29, 2006
    Publication date: March 27, 2008
    Applicant: THE HONG KONG POLYTECHNIC UNIVERSITY
    Inventor: Kin Wai Michael SIU
  • Publication number: 20080075014
    Abstract: PageRank (PR) is used by web search engine Google in ranking individual web pages. However, it is known that this value is also easily manipulated by methods known as spoofing. Further, the calculation of PR will require iterative cycles of computations to achieve a “steady” value. This would mean that huge computation resources are required to obtain reasonably reliable PR values for various web pages. This invention provides relatively accurate and simple methods for ranking the importance of a node in a network. The web graph or the network is first represented by an incidence matrix or a representation matrix W. The matrix W is then self-multiplied to obtain flow matrix. The flow capacity, or the rank of each node, is then obtained from the flow matrix.
    Type: Application
    Filed: September 22, 2006
    Publication date: March 27, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventor: Bin Jiang
  • Publication number: 20080076165
    Abstract: A method for producing sophorolipids having protein inducer and/or repressor activities having the steps of synthesizing the sophorolipid by fermentation of Candida bombicola in a fermentation media to form a natural mixture of lactonic sophorolipids and non-lactonic sophorolipids and then utilizing the natural mixture as a protein inducing agent, utilizing the natural mixture as a protein repressing agent, and/or utilizing the natural mixture as a combined protein induction/repressor agent. An application of the sophorolipid compound produced according to the method as a microbial media component.
    Type: Application
    Filed: December 22, 2005
    Publication date: March 27, 2008
    Applicant: POLYTECHNIC UNIVERSITY
    Inventors: Richard Gross, Vishal Shah, Frantisek Nerud, Datta Madamwars
  • Publication number: 20080043802
    Abstract: Shape-memory polymer is a new kind of material utilizing shape memorizing mechanism of elastomer of polyurethane family. These materials exhibit novel properties such as sensing (thermal), actuaton, high damping, adaptive responses, super-elasticity capability and air permeability. Recently, they are used and applied to finish textiles and garments. Although there are some characterization methods for shape memory polymers, there is currently no characterization method to evaluate the effects of shape memory fabrics. This invention provides a method to determine the shape memory coefficient of fabrics. The fabric is first deformed from the original state to a deformed state and then subjected to a switch temperature. Different parameters are measured at the original state before and after the fabric is subjected to the switch temperature to determine the shape memory coefficient.
    Type: Application
    Filed: July 13, 2006
    Publication date: February 21, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Jinlian Hu, Siu Ping Jane Chung, Edward Newton, Yuen Kei Li
  • Patent number: 7331117
    Abstract: A calcaneal bisector for indicating a calcaneal bisection line of a heel firstly includes a frame and a first plate mounted relative to the frame. One side of the heel can be aligned to the first plate when the bisector is in use. The bisector also includes a second plate movably mounted to the frame, and the second plate is slidable relative to the first plate for aligning to the other side of the heel. The bisector further includes an indicator movably mounted relative to the frame for indicating the calcaneal bisection line and a transmission mechanism disposed between the plates and the indicator for correlating movements of the indicator and the relative movements of the plates so as to ascertain the calcaneal bisection line.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: February 19, 2008
    Assignee: The Hong Kong Polytechnic University
    Inventors: Chun-Pong Lau, Kam-Lun Leung
  • Publication number: 20080037939
    Abstract: The present invention relates to a method for splicing a conventional single mode fiber and a photonic crystal fiber having a small core. The method, relying upon an offset fusion splicer, applies repeated arc discharges having weak current and short duration. The method results in a low loss between 1.5 dB to less than 0.5 dB.
    Type: Application
    Filed: July 23, 2007
    Publication date: February 14, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Limin Xiao, M. Suleyman Demokan, Wei Jin
  • Patent number: 7330457
    Abstract: When it is advantageous to do so, a wireless LAN station sends data packets to a destination station via an intermediate station, instead of to the destination station directly. That is, the intermediate station, which serves as a helper to the source, forwards packets received from the source station to the intended destination station. This cooperative data transmission approach can result in system performance improvement, as long as the total time consumed by two-hop transmission (i.e., transmission via the helper station) is less than direct transmission. Such a determination may be made using rate information stored at each station. Specifically, using the rate information, signaling needed to set up a transmission, the amount of data to be transmitted, etc., transmitting the data directly and via a help station may be compared.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: February 12, 2008
    Assignee: Polytechnic University
    Inventors: Shivendra S. Panwar, Pei Liu, Zhifeng Tao
  • Publication number: 20080025669
    Abstract: In the present invention, methods and systems for fabricating novel LPFGs are taught. Fabrication is preformed by focusing a CO2 laser beam having a diameter of 30 to 40 ?m onto a fiber, such fiber being fixed and weighted on either ends. The variations of transmission spectrum and polarization dependent (PDL) loss of the CO2 laser-grooved LPFGs with different fabrication parameters as functions of applied as functions of applied tensile stain are demonstrated and evaluated.
    Type: Application
    Filed: March 8, 2007
    Publication date: January 31, 2008
    Applicant: The Hong Kong Polytechnic University
    Inventors: Dongning Wang, Yiping Wang, Wei Jin
  • Patent number: 7323110
    Abstract: The present invention relates to a method of treating inorganic and organic compounds in wastewater, such as leachate. The treatment method involves the use of a amphiphilic particles that consist of hydrophobic cores and amine-containing polymer shells. The method of making the particles and their structures are such that the particles have diameters in the range of 100 to 500 nm and they may be used multiples of times more in treating wastewater, through the process of regenerating the particles.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: January 29, 2008
    Assignee: The Hong Kong Polytechnic University
    Inventor: Pei Li