Patents by Inventor Tang Hang Seng

Tang Hang Seng 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).

  • Formwork system for constructing a structural concrete floor with projecting floor beams
    Patent number: 8348221
    Abstract: A formwork system is provided for constructing a structural concrete floor, said formwork systems constitutes a main frame (100) forming a concrete slab structure, a plurality of side frames (110) each movably mounted at the edge of the main frame (100) for forming a concrete beam formwork structure, and a plurality of retainers mounted at the edge of the main frame (100) for supporting below the side frames (110) and jacking means for raising and lowering the formwork system. The side frame (110) being movable enables the formwork system to be effectively detached from a casted structural floor having concrete beams extended therefrom. The formwork system is also extricable on site after fabrication of the concrete ceiling slab floor and concrete beam.
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: January 8, 2013
    Inventors: Tang Hang Seng, Tang Hang Tow, Tang Hang Chyan
  • FORMWORK SYSTEM
    Publication number: 20100025563
    Abstract: A formwork system is provided for constructing a structural concrete floor, said formwork systems constitutes a main frame (100) forming a concrete slab structure, a plurality of side frames (110) each movably mounted at the edge of the main frame (100) for forming a concrete beam formwork structure, and a plurality of retainers mounted at the edge of the main frame (100) for supporting below the side frames (110) and jacking means for raising and lowering the formwork system. The side frame (110) being movable enables the formwork system to be effectively detached from a casted structural floor having concrete beams extended therefrom. The formwork system is also extricable on site after fabrication of the concrete ceiling slab floor and concrete beam.
    Type: Application
    Filed: February 14, 2008
    Publication date: February 4, 2010
    Inventors: Tang Hang Seng, Tang Hang Tow, Tang Hang Chyan