Patents by Inventor Yuk Tsan Sy

Yuk Tsan Sy 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: 9206975
    Abstract: A lighting apparatus having an axial heat pipe, will a light source, e.g., light-emitting diodes (“LEDs”), mounted on a proximate end of the axial heat pipe so as to face a reflector, the heat pipe passing through the reflector, and the distal end of the heat pipe on the other side of the reflector having a heat sink for dissipating the heat generated by the LEDs, with the heat sink having multiple heat dissipating fins.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: December 8, 2015
    Assignee: Huizhou Light Engine Limited
    Inventors: Wa Hing Leung, Tin Po Flavio Chu, Yuk Tsan Sy
  • Patent number: 9175832
    Abstract: A lens for an LED street lamp has an external curved surface that has a concave surface portion on one side thereof. A back surface of the lens has a micro-prism array and retainer feet. A recess in the back surface receives an LED light source. The outer surface of the lens has facets or windows that provide overlapping projections of light from adjacent facets. The lens is generally cushion shaped with an indentation at one side. The lens directs light in an asymmetrical distribution transverse to the lens and to direct light symmetrically over a wide area in a longitudinal direction of the lens.
    Type: Grant
    Filed: September 16, 2013
    Date of Patent: November 3, 2015
    Assignee: Light Engine Limited
    Inventors: Yuk Tsan Sy, Wa Hing Leung
  • Publication number: 20150078011
    Abstract: A lens for an LED street lamp has an external curved surface that has a concave surface portion on one side thereof. A back surface of the lens has a micro-prism array and retainer feet. A recess in the back surface receives an LED light source. The outer surface of the lens has facets or windows that provide overlapping projections of light from adjacent facets. The lens is generally cushion shaped with an indentation at one side. The lens directs light in an asymmetrical distribution transverse to the lens and to direct light symmetrically over a wide area in a longitudinal direction of the lens.
    Type: Application
    Filed: September 16, 2013
    Publication date: March 19, 2015
    Applicant: Light Engine Limited
    Inventors: Yuk Tsan Sy, Wa Hing Leung
  • Publication number: 20150029726
    Abstract: A lighting apparatus haying an axial heat pipe, will a light source, e.g., light-emitting diodes (“LEDs”), mounted on a proximate end of the axial heat pipe so as to face a reflector, the heat pipe passing through the reflector, and the distal end of the heat pipe on the other side of the reflector having a heat sink for dissipating the heat generated by the LEDs, with the heat sink haying multiple heat dissipating fins.
    Type: Application
    Filed: July 23, 2013
    Publication date: January 29, 2015
    Applicant: Huizhou Light Engine Limited
    Inventors: Wa Hing Leung, Tin Po Flavio Chu, Yuk Tsan Sy
  • Publication number: 20130039048
    Abstract: An LED lighting device comprises: (a) a housing comprising: (i) a metal inner portion; and (ii) a porcelain enamel coating over at least a portion of an outer surface of the metal inner portion; and (b) at least one LED, the at least one LED being thermally coupled to the housing. The housing is configured to conduct heat from the at least one LED to the surrounding environment.
    Type: Application
    Filed: July 26, 2012
    Publication date: February 14, 2013
    Inventors: Chung W. Lo, Yuk Tsan Sy, Wa Hing Leung