Patents Assigned to Hong Kong University of Science and Technology
  • POLARIZATION CONVERTER BY PATTERNED POLARIZATION GRATING
    Publication number: 20130301126
    Abstract: A polarization converter and polarization conversion systems are provided. The polarization converter and polarization conversion systems include a patterned polarization grating with left hand and right hand polarization grating domains. The polarization grating domains are configured to diffract incident non-polarized light into beams having left and right circular polarization states.
    Type: Application
    Filed: May 6, 2013
    Publication date: November 14, 2013
    Applicant: The Hong Kong University of Science and Technology
    Inventors: Tao DU, Fan FAN, Vladimir Grigorievich Chigrinov, Hoi Sing Kwok
  • DNA sequence encoding a retinoic acid regulated protein
    Patent number: 8580929
    Abstract: The present invention concerns a novel retinoic acid regulated gene whose expression product displays useful morphogenic/mitogenic properties. The present invention further concerns an isolated nucleic acid of SEQ ID NO:1 encoding a retinoic acid regulated expression product having an amino acid sequence of SEQ ID NO:2.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: November 12, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Nancy Y. Ip, William M. W. Cheung
  • Acoustic energy absorption metamaterials
    Patent number: 8579073
    Abstract: An acoustic energy absorption metamaterial includes at least one enclosed planar frame with an elastic membrane attached having one or more rigid plates are attached. The rigid plates have asymmetric shapes, with a substantially straight edge at the attachment to said elastic membrane, so that the rigid plate establishes a cell having a predetermined mass. Vibrational motions of the structure contain a number of resonant modes with tunable resonant frequencies.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: November 12, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Ping Sheng, Zhiyu Yang, Weijia Wen, Jun Mei, Guancong Ma
  • CONTENT DISTRIBUTION OVER A NETWORK
    Publication number: 20130297731
    Abstract: Distributive content delivery techniques are applied in a content delivery system. A content delivery overlay is generated as a function of delay times, bandwidth requirements, and throughput of a network. Helpers are added to the content delivery network as a function of delay times, bandwidth requirements, and throughput. Further, content can be transmitted without exchanging buffermaps or waiting for whole packets to be transmitted.
    Type: Application
    Filed: May 3, 2013
    Publication date: November 7, 2013
    Applicant: The Hong Kong University of Science and Technology
    Inventor: The Hong Kong University of Science and Technology
  • Photo-induced dichroic polarizers and fabrication methods thereof
    Patent number: 8576485
    Abstract: A method of forming a polarizing material is provided including exposing a layer of dichroic material to activating light illumination to provide an ordered structure with a distinguished absorption axis and thus photo-induce polarization, and fixing the induced polarization by polymerization of the dichroic layer. Novel polarizing materials formed thereby are also provided. By selectively exposing regions of the dichroic material to differing activating radiation, different regions with different polarization axes can be created. The polarizing material can also be provided with a coating or coatings to alter the spectral responses, and a stack formed of a plurality if dichroic layers can be provided.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: November 5, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Vladimir Markovich Kozenkov, Wing Chiu Yip, Vladimir Grigorievich Chigrinov, Hoi Sing Kwok
  • Transistors and rectifiers utilizing hybrid electrodes and methods of fabricating the same
    Patent number: 8564020
    Abstract: Systems, methods, and apparatus described herein are associated with devices including hybrid electrodes. A heterostructure semiconductor transistor can include a III-N-type semiconductor heterostructure including a barrier layer overlying an active layer and a hybrid electrode region including a hybrid drain electrode region. Further, a heterostructure semiconductor rectifier can include a III-N-type semiconductor heterostructure and a hybrid electrode region including a hybrid cathode electrode region. Furthermore, the hybrid electrode region of the transistor and rectifier can include permanently trapped charge located under a Schottky contact of the hybrid electrode region.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: October 22, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Jing Chen, Chunhua Zhou
  • Antifouling method and composition using chromen-4-one derivatives
    Patent number: 8557331
    Abstract: A method to utilize a chemical genus of chromen-4-one derivatives as non-toxic, environment friendly antifouling agent, a coating material for objects submerged under the water and subject to biofouling based on the chromen-4-one compounds, as well as a method of obtaining one of such chromen-4-one antifouling compounds, 4?,5,7-trihydroxy-isoflavone, from a natural source. Particularly exemplary of such substituted chromen-4-one antifouling compounds are provided and they are 4?,5,7 -trihydroxy-isoflavone, 4?,5-dihydroxy-3,6,7,8 tetramethoxy-flavone, 3?,5-dihydroxy-3,4?,6,8 tetramethoxy-flavone, 4?,5-dihydroxy-3,6,7-trimethoxy-flavone, 4?,5,7-trihydroxy-flavone, 3?,4?,6,7-tetrahydroxy-flavone, and 5-monohydroxy-flavone.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: October 15, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Peiyuan Qian, Xiaojian Zhou, Hongping He, Ying Xu
  • AGGREGATION INDUCED EMISSION OF FLUORESCENT BIOPROBES AND METHODS OF USING THE SAME
    Publication number: 20130266953
    Abstract: Provided herein are fluorescent bioprobes comprising fluorogens that exhibit aggregation-induced emission (AIE) labeled on biomolecules. The present subject matter relates to a fluorescent bioprobe comprising one or more fluorogen labeled on chitosan. The present subject matter is also directed to methods of preparing the fluorescent bioprobes, methods of labeling and detecting DNA and/or proteins with the fluorescent bioprobe, and methods of cell imaging including live cell tracking.
    Type: Application
    Filed: May 21, 2013
    Publication date: October 10, 2013
    Applicant: The Hong Kong University of Science And Technology
    Inventor: The Hong Kong University of Science And Technology
  • Preparation of hyperbranched poly(triazole)s by in situ click polymerization and adhesive containing the same
    Patent number: 8524858
    Abstract: Provided is a high temperature-resistant metal adhesive containing hyperbranched poly(triazole)s synthesized by in situ azide/alkyne click polymerization. Also provided is a method for preparing the same adhesives by in situ click polymerization of azide and alkyne monomers on metal substrates. The method is optimized to get high adhesive strength at room temperature or elevated temperatures by analyzing the effects of monomer ratio, curing temperature and time, and annealing temperature and time. The hyberbranched poly(triazole)s adhesive has comparable or better temperature resistance compared with known high temperature epoxy metal adhesives, and it is the first high temperature metal adhesive using hyperbranched poly(triazole)s prepared by in situ azide/alkyne click polymerization.
    Type: Grant
    Filed: January 5, 2011
    Date of Patent: September 3, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Benzhong Tang, Youhong Tang, Ka Wai Jim, Anjun Qin, Wing Yip Lam, Jie Li
  • Photo-aligned liquid-crystal micropolarimeter array and its manufacturing method
    Patent number: 8525970
    Abstract: A micropolarimeter is described for simultaneously extracting all Stokes parameters from incident light. The micropolarimeter includes at least one superpixel, which further includes three or more subpixels, each exact a different polarization components from the incident light. The micropolarimeter includes a first and second alignment layers and a liquid crystal layer disposed between the first and second alignment layers. The liquid crystal molecules of the liquid crystal layer are aligned in accordance with the first and second alignment layers to form the superpixel. A method is provided for manufacturing the photo-aligned liquid-crystal micropolarimeter array.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: September 3, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Xiaojin Zhao, Amine Bermak, Vladimir Grigorievich Chigrinov
  • Implementing self-assembly nanometer-sized structures within metal—polymer interface
    Patent number: 8506751
    Abstract: An adhesion bond between a metallic surface layer and a second surface is formed by treating the layers with a material comprising sulphur-containing molecules. The sulphur-containing molecules are applied as a surface treatment of the surfaces, so that the sulphur-containing molecules act as a coupling agent to bond chemically to both substrates form nanometer-sized structures on the surfaces. The nanometer-sized structures are incorporated into a self-assembly interlayer in between the surfaces, with the interlayer forming a bond to both surfaces.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: August 13, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Kit Ying Wong, Matthew Ming Fai Yuen, Bing Xu
  • Method and apparatus for driving reflective bistable cholestric displays
    Patent number: 8508448
    Abstract: This invention provides a method and apparatus for driving bistable cholesteric liquid crystal displays. The method and apparatus provided a display in which all the pixels are initially driven to the P state. Selected pixels for the display are then driven to the FC state to provide the desired message. The state of the pixels is then maintained for a viewing period prior to any resetting of the display to the P state. The switching from the P state to the FC state allows fast addressing times and lower voltages to be used in driving the display.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: August 13, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Hoi-Sing Kwok, Fei-Hong Yu, Qing-Cheng Li, Wing-Chiu Yip
  • Reliable normally-off III-nitride active device structures, and related methods and systems
    Patent number: 8502323
    Abstract: A field-effect transistor includes a first gate, a second gate held at a substantially fixed potential in a cascode configuration, and a semiconductor channel. The semiconductor channel has an enhancement mode portion and a depletion mode portion. The enhancement mode portion is gated to be turned on and off by the first gate, and has been modified to operate in enhancement mode. The depletion mode portion is gated by the second gate, and has been modified to operate in depletion mode and that is operative to shield the first gate from voltage stress.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: August 6, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventor: Jing Chen
  • Joint semantic segmentation of images and scan data
    Patent number: 8494285
    Abstract: Systems, methods, and apparatus are described that that increase computer vision analysis in the field of semantic segmentation. With images accompanied by scan data, both two-dimensional and three-dimensional image information is employed for joint segmentation. Through the established correspondence between image data and scan data, two-dimensional and three-dimensional information respectively associated therewith is integrated. Using trained random forest classifiers, the probability of each pixel in images belonging to different object classes is predicted. With the predicted probability, optimization of the labeling of images and scan data is performed by integrating multiples cues in the markov random field.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: July 23, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Honghui Zhang, Long Quan
  • DNA Sequence Encoding a Retinoic Acid Regulated Protein
    Publication number: 20130177985
    Abstract: The present invention concerns a novel retinoic acid regulated gene whose expression product displays useful morphogenic/mitogenic properties. The present invention further concerns an isolated nucleic acid of SEQ ID NO:1 encoding a retinoic acid regulated expression product having an amino acid sequence of SEQ ID NO:2.
    Type: Application
    Filed: August 24, 2012
    Publication date: July 11, 2013
    Applicant: The Hong Kong University of Science and Technology
    Inventors: Nancy Y. Ip, William M.W. Cheung
  • Transient liquid crystal architecture
    Patent number: 8482506
    Abstract: Methods and systems for displaying videos with high contrast using fast transient response of liquid crystal materials are disclosed. The system comprises a liquid crystal material treated with a chiral dopant, which is aligned between two substrates with conductive layer on each substrate. The system can be operated in an active or passive matrix mode display. The active matrix display can be a thin film transistor (TFT) or MOS transistor, whereas no transistors are used for the passive matrix mode display. A full color display, with high contrast, can be achieved by illuminating the transient liquid crystal material with a pulsed backlight.
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: July 9, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Hoi Sing Kwok, Yuet Wing Li
  • Intelligent peer-to-peer media streaming
    Patent number: 8477658
    Abstract: An efficient media streaming method utilizing a globally load balanced overlay network. This method makes use of capacity per out-degree values to construct and maintain an overlay network for media streaming in a Peer-to-Peer environment.
    Type: Grant
    Filed: April 25, 2007
    Date of Patent: July 2, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Danny Hin Kwok Tsang, Hao Luan, Kin Wah Kwong
  • Low voltage liquid crystal lens with variable focal length
    Patent number: 8471999
    Abstract: Disclosed herein is a liquid crystal lens with a variable focal length. The gradient profile of the liquid crystals molecules that causes the gradient profile of the refractive index is achieved by inducing non-uniformly distributed anchoring energy and an external electric or magnetic field applied to the liquid crystal layer. Unlike existing electrically controlled liquid crystal lens, the external electric or magnetic field has a uniform spatial distribution within the liquid crystal layer. The focal length of the liquid crystal lens is controlled via the non-uniformly distributed anchoring energy and by varying the uniformly distributed electric or magnetic field.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: June 25, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Sergiy Valyukh, Vladimir Grigorievich Chigrinov, Hoi Sing Kwok
  • Method and system for real time quantification and monitoring of nucleic acid amplification using electroconductive or electrochemically active labels
    Patent number: 8465926
    Abstract: A method and device for real time electrochemically or electrically monitoring and detecting nucleic acid amplification products, i.e. after each polymerase chain reaction cycle, utilizes electrochemically active or electrically conductive reporter materials. An electric voltage is applied and electric signals are measured during a PCR amplification process to the electrodes that is suitable for quantifying the amplified products of a sample's nucleic acid(s) produced. This technique is suitable for point-of-use applications, e.g. detecting bioanalytes in remote locations.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: June 18, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: I Ming Hsing, Thomas Ming Hung Lee, Stephen Siu Wai Yeung
  • Method and system for a novel flow admission control framework
    Patent number: 8441926
    Abstract: This invention presents a new FAC framework that keeps the stateless property of the Internet, allows statistical multiplexing gains, and is capable of handling admission control of both TCP and UDP flows. One of the key inventions of the patent is the solution for the signaling/data path divergence problem inherent in a session layer FAC scheme. The solution consists of two components. First, we keep the paths in the network symmetric (i.e. the forward and the backward path are the same) so that we only need to monitor SETUP packets in new flow detection. Second, we select either a tree or a nonblocking mesh topology for the network. Various topologies for constructing nonblocking networks for the proposed FAC architecture are also disclosed.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: May 14, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventor: Chin Tau Lea