Patents by Inventor Yi-An Sie

Yi-An Sie 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).

  • Apparatus for making a formwork for molding concrete walls
    Patent number: 7252281
    Abstract: A formwork making apparatus includes a bottom block, two side locating boards arranged in parallel on the bottom block, two forming boards respectively adhered to the side locating boards and set facing each other, two blocking plates set between the two side locating boards at the two distal ends and defining with the side locating boards and the bottom block an elongated molding chamber, and two fixtures fastened to the side locating boards and the blocking plates to secure the side locating boards and the blocking plates to the bottom block.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: August 7, 2007
    Inventor: Yi-An Sie