Patents by Inventor Chi Hang Cheung

Chi Hang Cheung 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: 10357801
    Abstract: A method of manufacturing a release sheet for use in replicative embossing includes manipulating a surface morphology of a replicative surface having a predefined embossing pattern; and depositing and embossing a coating material on a substrate of the release sheet with the replicative surface, wherein both the predefined embossing pattern and the surface morphology of the replicative surface is transferred to the coating material of the release sheet.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: July 23, 2019
    Assignee: VANTAGE TECHNOLOGY LIMITED
    Inventors: Chui Wan Tse, Chi Hang Cheung
  • Publication number: 20170100745
    Abstract: A method of manufacturing a release sheet for use in replicative embossing includes manipulating a surface morphology of a replicative surface having a predefined embossing pattern; and depositing and embossing a coating material on a substrate of the release sheet with the replicative surface, wherein both the predefined embossing pattern and the surface morphology of the replicative surface is transferred to the coating material of the release sheet.
    Type: Application
    Filed: October 6, 2016
    Publication date: April 13, 2017
    Inventors: Chui Wan Tse, Chi Hang Cheung
  • Patent number: 8093788
    Abstract: A light emitting device package and a lighting system are provided. According to one embodiment, a functional substrate; at least one light emitting element bonded onto the functional substrate; and at least one design-in thermal detection unit built onto the functional substrate are provided, wherein the design-in thermal detection unit is proximate to the light emitting element, and wherein the design-in thermal detection unit is configured to detect the temperature and transmit a temperature signal. The design-in thermal detection unit may be an NTC thermistor based on a semiconductor substrate. A control system may be included to detect temperature and make any necessary current adjustments in order to maintain consistent performance of the light emitting element.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: January 10, 2012
    Assignee: Hong Kong Applied Science and Technology Research Institute Co. Ltd.
    Inventors: Shan Mei Wan, Chi Hang Cheung, Ming Lu
  • Patent number: 8081216
    Abstract: A lighting control system for controlling the lighting of a predetermined area is provided. According to one embodiment, the lighting control system comprises one or more light sources positioned in the predetermined area, the light source configured to include adjustable light intensity; a camera positioned and configured to capture an image of the predetermined area; and a controller in operable communication with the one or more light sources and the camera, the controller configured to control the one or more light sources and adjust the light intensity of the light source. The controller is configured to operate in a closed control loop to automatically adjust the lighting conditions of a predetermined area or environment. A false alarm checking process checks for temporary or localized events to prevent unnecessary lighting adjustments.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: December 20, 2011
    Assignee: Hong Kong Science and Technology Research Institute Co., Ltd.
    Inventors: Chi Hang Cheung, Shan Mei Wan, Kai Chiu Wu, Ming Lu
  • Publication number: 20100244708
    Abstract: A lighting control system for controlling the lighting of a predetermined area is provided. According to one embodiment, the lighting control system comprises one or more light sources positioned in the predetermined area, the light source configured to include adjustable light intensity; a camera positioned and configured to capture an image of the predetermined area; and a controller in operable communication with the one or more light sources and the camera, the controller configured to control the one or more light sources and adjust the light intensity of the light source. The controller is configured to operate in a closed control loop to automatically adjust the lighting conditions of a predetermined area or environment. A false alarm checking process checks for temporary or localized events to prevent unnecessary lighting adjustments.
    Type: Application
    Filed: March 26, 2009
    Publication date: September 30, 2010
    Applicant: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO., LTD.
    Inventors: Chi Hang Cheung, Shan Mei Wan, Kai Chiu Wu, Ming Lu
  • Publication number: 20100219733
    Abstract: A light emitting device package and a lighting system are provided. According to one embodiment, a functional substrate; at least one light emitting element bonded onto the functional substrate; and at least one design-in thermal detection unit built onto the functional substrate are provided, wherein the design-in thermal detection unit is proximate to the light emitting element, and wherein the design-in thermal detection unit is configured to detect the temperature and transmit a temperature signal. The design-in thermal detection unit may be an NTC thermistor based on a semiconductor substrate. A control system may be included to detect temperature and make any necessary current adjustments in order to maintain consistent performance of the light emitting element.
    Type: Application
    Filed: March 2, 2009
    Publication date: September 2, 2010
    Applicant: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO. LTD.
    Inventors: Shan Mei Wan, Chi Hang Cheung, Ming Lu