Patents by Inventor Chen-Hang Wu

Chen-Hang Wu 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).

  • Casting method of double thin shell mold craft
    Patent number: 10682688
    Abstract: A casting method includes constructing a 3D model to add an inner wall compensation quantity, making a thin shell mold by a 3D printing machine, individually treating the thin shell mold by smooth processing, processing the thin shell mold by multi-layer impregnation slurry or gunite to make an outer shell mold, and to form a double-layer shell mold which includes the thin shell mold and the outer shell mold, processing the double-layer shell mold by sand filling and compressing, clearing the thin shell mold by a physical or chemical process, casting the outer shell mold to form a shaped article, and post processing the shaped article by shaking and sand clearing to form a product.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: June 16, 2020
    Inventors: Cheng-Kuan Wu, Chen-Hang Wu
  • Casting Method of Double Thin Shell Mold Craft
    Publication number: 20200078857
    Abstract: A casting method includes constructing a 3D model to add an inner wall compensation quantity, making a thin shell mold by a 3D printing machine, individually treating the thin shell mold by smooth processing, processing the thin shell mold by multi-layer impregnation slurry or gunite to make an outer shell mold, and to form a double-layer shell mold which includes the thin shell mold and the outer shell mold, processing the double-layer shell mold by sand filling and compressing, clearing the thin shell mold by a physical or chemical process, casting the outer shell mold to form a shaped article, and post processing the shaped article by shaking and sand clearing to form a product.
    Type: Application
    Filed: September 7, 2018
    Publication date: March 12, 2020
    Inventors: Cheng-Kuan Wu, Chen-Hang Wu