Patents by Inventor Chung Leung

Chung Leung has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11621771
    Abstract: Satellite communication methods and payloads are described. The payload and methods are designed to enable effective use of carrier signals in the guard band region of a channelized band of spectrum. An on-board digital channelizer may implement a band edge power monitor for measuring power spectral density in the band edges of a channel and, if it exceeds a preset threshold level, downscaling the signal amplitude in the band edges to prevent hardware damage to the payload. The channelizer may further implement a band edge gain adjustment filter for shaping the overall frequency response to flatten the response across adjacent channels, including through the guard band region between the passbands of the adjacent channels.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: April 4, 2023
    Assignee: ASIA SATELLITE TELECOMMUNICATIONS COMPANY LIMITED
    Inventors: Roger Shun Hong Tong, Harry Yin Chung Leung, Hai Hu
  • Publication number: 20230059020
    Abstract: In a method for optimizing the image processing of web videos, information of an image frame in a web video is obtained. A canvas element based on the information of the image is created, and a canvas element is drawn based on the information of the image. Attached recognition information is obtained. A block element based on the attached information is created, and the attached information is set into the block element. The canvas element and the block element are composed and stacked on a web page. The canvas element and the block element are displayed in the web page. An electronic device, and a non-transitory computer readable storage medium applying the method are also provided.
    Type: Application
    Filed: May 18, 2022
    Publication date: February 23, 2023
    Inventor: YIN-CHUNG LEUNG
  • Publication number: 20220341803
    Abstract: A device for use in pressure sensing has a housing enclosing a chamber and having at least one port that communicates with the chamber. A pressure sensor receives fluid pressure from the chamber. The chamber has a compliance that exhibits a marked change in volumetric stiffness repeatably at a fixed pressure.
    Type: Application
    Filed: July 14, 2022
    Publication date: October 27, 2022
    Applicant: Auckland UniServices Limited
    Inventors: David Mortimer BUDGETT, Dixon Pok Chung LEUNG, John Daniel MCCORMICK
  • Patent number: 11442128
    Abstract: During the delivery of thermal therapy, the measured temperature at each pixel in a cross-sectional temperature slice of a multi-pixel thermal image is compared to a maximum temperature limit. When the measured temperature of a pixel is higher than the maximum temperature limit for a predetermined number of consecutive cross-sectional temperature slices, the pixel is masked if the absolute value of the average difference between the measured temperature at the pixel and the measured temperatures at the pixel's neighbors is greater than a maximum temperature variation. The measured temperature of the masked pixel is ignored in subsequent cross-sectional temperature slices until the delivery of thermal therapy is complete.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: September 13, 2022
    Assignee: Profound Medical Inc.
    Inventors: Alexandre Bigot, Benjamin Yat-Chung Leung
  • Patent number: 11422051
    Abstract: A device for use in pressure sensing such as hydrocephalus shunts, having a housing enclosing a chamber with at least one port communicating with the chamber. A wall of the chamber includes a flexible portion or thin diaphragm that deflects with transitions in pressure to contact an upstand structure of the housing. A pressure sensor is contained within an enclosure sealed from the chamber by a flexible membrane and which receives fluid pressure from the chamber. This arrangement allows for calibration of the device by identifying a knee feature in pressure data associated with the diaphragm making contact with the upstand.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: August 23, 2022
    Assignee: Auckland UniServices Limited
    Inventors: David Mortimer Budgett, Dixon Pok Chung Leung, John Daniel McCormick
  • Publication number: 20220218188
    Abstract: A method for image-capturing of an internal organ by a miniature imaging device, comprising: generating a light at a first light intensity on to a subject area of an internal organ and capturing an image of the subject area by a miniature imaging device configured under default exposure parameter values; computing a second light intensity and optimized exposure parameter values based on brightness of the captured image, an orientation, a position, and a motion of the miniature imaging device; and generating a light at the second light intensity on to the subject area and recapturing the image of the subject area by the miniature imaging device configured under the optimized exposure parameter values. The second light intensity and optimized exposure parameter values are derived by an ex vivo processing unit in wireless data communication with the miniature imaging device.
    Type: Application
    Filed: January 13, 2021
    Publication date: July 14, 2022
    Inventors: Chi Chung LEUNG, Hanqiang HUANG
  • Publication number: 20220133154
    Abstract: A fiber-optic sensor matt detects movements of a person on the matt that cause microbending of a fiber-optic cable that is arranged into a symmetric pair of radial ring groups within the matt. There are no cross-over points or overlapping of the fiber-optic cable within the symmetric pair of radial ring groups that could cause fiber wear and noisy readings. Microbending of the fiber-optic cable pressed into a mesh modulates the light intensity received, which is analyzed to extract both respiration and heart BallistoCardioGram (BCG) waveforms by convolution with Daubechies dB5 wavelet and scaling functions. The reconstructed level-4 detail waveform is output as the extracted BCG, while the reconstructed level-6 approximation waveform is output as the extracted respiration waveform. Respiration and heart rates and variations can be generated from the extracted waveforms. An integrated Fast Wavelet Transform (FWT) using dB5 wavelet thus generates both respiration rate and heart rate.
    Type: Application
    Filed: October 29, 2020
    Publication date: May 5, 2022
    Inventors: Qian Cheng ZHAO, Tsz Chung LEUNG, Man Sang KWOK
  • Patent number: 11239471
    Abstract: A membrane electrode assembly including: an anode electrode; a cathode electrode; and a polymer electrolyte membrane; wherein the cathode includes a first cathode catalyst sublayer including a first precious metal catalyst composition and a first ionomer composition including a first ionomer and a second ionomer; and a second cathode catalyst sublayer including a second precious metal catalyst composition and a second ionomer composition including a third ionomer; wherein the first ionomer is different from the second ionomer in at least one of chemical structure and equivalent weight.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: February 1, 2022
    Assignee: BALLARD POWER SYSTEMS INC.
    Inventors: Siyu Ye, Alexander Man-Chung Leung, Kyoung Bai, Dustin William H. Banham, Alan Young
  • Publication number: 20210401952
    Abstract: The invention provides a method for treating acute myeloid leukemia (AML) in a subject in need thereof, said method comprising administering a therapeutically effective amount of an arginine-depleting agent to the subject, wherein the AML is of the French-American-British (FAB) subtype M0 (undifferentiated acute myeloblastic leukemia), M2 (acute myeloblastic leukemia with maturation), M4 (acute myeloblastic leukemia with maturation), M4 eos (acute myelomonocytic leukemia with eosinophilia), M5 (acute monocytic leukemia), M6 (acute erythroid leukemia) or M7 (acute megakaryoblastic leukemia).
    Type: Application
    Filed: June 29, 2020
    Publication date: December 30, 2021
    Inventors: Sui-Yi KWOK, Norman Fung-Man WAI, Terence Shau Yin WAI, Yun Chung LEUNG
  • Publication number: 20210359550
    Abstract: A wireless power transfer secondary or pick-up has a resonant circuit and a switch connected to the resonant circuit operable to produce a phase shift in an oscillating voltage or current in the resonant circuit. A controller is configured to operate the switch to introduce one or more controlled phase shifts in the oscillating voltage or current in the resonant circuit which encode data for detection by a coupled circuit.
    Type: Application
    Filed: September 6, 2019
    Publication date: November 18, 2021
    Inventors: David Mortimer BUDGETT, Simon Charles MALPAS, Dixon Pok Chung LEUNG, Robert John GALLICHAN, Bryon Elmer WRIGHT, John Daniel MCCORMICK
  • Publication number: 20210310866
    Abstract: The disclosure relates to an infrared spectrometer comprising first and second opposing reflectors spaced apart by a spacing length, and a plurality of discrete concave reflecting facets, the reflecting facets being facets of at least one of the opposing reflectors. An infrared laser source is arranged to form a laser beam. The opposing reflectors are arranged such that the laser beam is reflected alternately from each of the opposing reflectors, including being reflected at least once by each of the reflecting facets. A detector is arranged to detect spectral properties of the laser beam after reflection from each of the plurality of reflecting facets, and an analyser then determines properties of a sample disposed between the first and second opposing reflectors from the detected spectral properties.
    Type: Application
    Filed: July 1, 2019
    Publication date: October 7, 2021
    Applicant: United Kingdom Research and Innovation
    Inventors: Damien Weidmann, Johnny Chung Leung Chu
  • Publication number: 20210233114
    Abstract: A system for broadcasting information to public by moving vehicles includes a server, a plurality of electronic devices, and a plurality of display panels. The server stores a plurality of user accounts and the information for broadcasting. Each electronic device is associated with at least one of the user accounts to communicate with the server. The display panels communicate with the electronic devices and are configured for attaching onto a vehicle. Information to be broadcasted can be selected in each user account on an electronic device associated with one of the display panels to display the information to the public.
    Type: Application
    Filed: May 24, 2019
    Publication date: July 29, 2021
    Inventor: Chung Leung LAU
  • Publication number: 20210189370
    Abstract: Compositions and methods for the preparation of high purity arginase and high efficiency preparation of monosubstituted polyethylene glycol conjugation of arginase are provided, as are methods for using arginase in combination with asparaginase to inhibit cancer cells. High purity arginase is provided by applying an initial high temperature precipitation step, followed by ion exchange to provide arginase at a purity of 90% or greater. Conjugation with either linear or branched polyethylene glycol is performed using a maleimide-derivatized polyethylene glycol at low molar excess relative to arginase and at reduced temperature. Such polyethylene glycol-derivatized arginase is useful in combination with asparaginase in inhibiting the growth of cancer cells, particularly cells that have low endogenous asparaginase expression.
    Type: Application
    Filed: August 16, 2018
    Publication date: June 24, 2021
    Inventors: Johnson Yiu-Nam LAU, Yun Chung LEUNG, Wai Hung LO, Kuo-Ming YU, Yuk-Keung YEUNG, Pui Shi PANG, Qui-Lim CHOO
  • Publication number: 20210162028
    Abstract: The present disclosure provides methods for inducing intermittent fasting and modulating autophagy in cells or organs in a subject via periodic administration of arginine-depleting agents. Induction of intermittent fasting and modulation of autophagy are useful in preventing and/or treating diseases, including those associated with deficits in autophagy, promoting the clearance of intracellular pathogens and protein aggregates, and promoting regeneration and longevity. The methods can be used alone or in combination with other agents to enhance intermittent fasting and autophagy activity to potentiate the health benefit(s).
    Type: Application
    Filed: December 2, 2020
    Publication date: June 3, 2021
    Inventors: Yun Chung LEUNG, Alisa Sau-wun SHUM, Man Yuen LEE
  • Patent number: 10998965
    Abstract: A high throughput satellite (HTS) and a method of operating the HTS for relaying data between a low earth orbit (LEO) satellite and a target ground station, where the HTS provides spot beams for a spot beam coverage area. The method of operating the HTS includes: determining an estimated trajectory of an orbiting LEO satellite; assigning a plurality of assigned spot beams having a matching color re-use polarization; and transmitting assignments of the plurality of assigned spot beams to the high throughput satellite to cause the high throughput satellite to maintain the inter-satellite link via a first spot beam and one or more assigned subsequent spot beams having the matching color re-use polarization.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: May 4, 2021
    Assignee: ASIA SATELLITE TELECOMMUNICATIONS COMPANY LIMITED
    Inventors: Roger Shun Hong Tong, Fred Chun Yin Vong, Harry Yin Chung Leung, Hai Hu, Man Hei Chan, Kat Fan Yip
  • Publication number: 20210115288
    Abstract: The present invention relates to a formable anti-glare polymer film wherein a thermoplastic polymeric film having at least one textured surface and a coating on the textured surface said coating being obtainable by coating with a coating composition comprising (a) a binder, comprising at least one difunctional (meth)acrylic monomer and/or difunctional (meth)acrylate oligomer, and (b) a crosslinking agent, comprising at least one multifunctional (meth)acrylic monomer, wherein said coating composition has a theoretical crosslinking density in the range of from <2.0·10?3, preferably of from ?1.99·10?3 to ?0.1·10?3, more preferably of from ?1.85·10?3 to ?0.2·10?3, and a process for producing such film. Furthermore the invention relates to molded articles, particularly molded articles obtainable by in-mold decoration (IMD) processes, and the use of the formable anti-glare films for the manufacture of molded articles.
    Type: Application
    Filed: November 23, 2016
    Publication date: April 22, 2021
    Inventors: Theivanayagam Chairman DEIVARAJ, Serguei KOSTROMINE, Joachim PETZOLDT, Nutkiye BAYRAM, Daniel SCHEIBNER, Chung Leung WONG, Meng FENG
  • Patent number: 10972191
    Abstract: A geolocation method and system for locating the source of interference to a high throughput satellite. The method involves determining relative power level differences between interference signals received by the victim spot beam and co-colored nearby spot beams on the same satellite. Using beam pattern data, the relative power levels for a pair of beams determines contour lines of possible location the correspond to the relative power difference in the signals received by the two beams in the pair. A point of intersection of contour lines from multiple pairs of spot beams indicates the location of the source of interference.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: April 6, 2021
    Assignee: Asia Satellite Telecommunications Company Limited
    Inventors: Roger Shun Hong Tong, Fred Chun Yin Vong, Harry Yin Chung Leung, Hai Hu, Man Hei Chan, Kat Fan Yip
  • Publication number: 20210093896
    Abstract: During the delivery of thermal therapy, the measured temperature at each pixel in a cross-sectional temperature slice of a multi-pixel thermal image is compared to a maximum temperature limit. When the measured temperature of a pixel is higher than the maximum temperature limit for a predetermined number of consecutive cross-sectional temperature slices, the pixel is masked if the absolute value of the average difference between the measured temperature at the pixel and the measured temperatures at the pixel's neighbors is greater than a maximum temperature variation. The measured temperature of the masked pixel is ignored in subsequent cross-sectional temperature slices until the delivery of thermal therapy is complete.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 1, 2021
    Inventors: Alexandre Bigot, Benjamin Yat-Chung Leung
  • Publication number: 20200259560
    Abstract: A high throughput satellite (HTS) and a method of operating the HTS for relaying data between a low earth orbit (LEO) satellite and a target ground station, where the HTS provides spot beams for a spot beam coverage area. The method of operating the HTS includes: determining an estimated trajectory of an orbiting LEO satellite; assigning a plurality of assigned spot beams having a matching color re-use polarization; and transmitting assignments of the plurality of assigned spot beams to the high throughput satellite to cause the high throughput satellite to maintain the inter-satellite link via a first spot beam and one or more assigned subsequent spot beams having the matching color re-use polarization.
    Type: Application
    Filed: December 31, 2019
    Publication date: August 13, 2020
    Inventors: Roger Shun Hong Tong, Fred Chun Yin Vong, Harry Yin Chung Leung, Hai Hu, Man Hei Chan, Kat Fan Yip
  • Patent number: RE48805
    Abstract: The present invention provides a pharmaceutical composition containing albumin-binding arginine deiminase (AAD) fusion protein for treating cancer or other arginine-dependent diseases. The AAD fusion protein can be purified from both soluble and insoluble fractions of crude proteins, binds to human serum albumin (HSA) or animal serum albumin and has its high activity with longer half life for efficient depletion of arginine in cancer cells. The specific activities of wild-type ADI and AAD fusion protein in the present invention are about 20 and about 19 U/mg (at physiological pH 7.4), respectively. The composition can be used alone or in combination with at least one chemotherapeutic agent to give a synergistic effect on cancer treatment and/or inhibiting metastasis. The AAD fusion protein can also be used as a component for detection and quantitative analysis of arginine in a testing kit for various samples including blood, food and analytical samples.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: November 2, 2021
    Assignee: Vision Global Holdings Ltd.
    Inventors: Bing Lou Wong, Norman Fung Man Wai, Sui Yi Kwok, Yun Chung Leung