Patents by Inventor Mao Jong Chang

Mao Jong Chang 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).

  • Toy bowling pin with sounding and lighting effect
    Patent number: 7014565
    Abstract: A toy bowling pin includes a body made of semi-transparent material and has a hole longitudinally defined in the body. A cylinder is mounted in the bottom of the body and received in the hole in the body. An electric device partially received in the cylinder. The electric device includes a lighting element and a loudspeaker mounted thereon for providing lighting effect and sounding effect to the toy bowling pin.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: March 21, 2006
    Inventor: Mao Jong Chang