Patents by Inventor Steve Yueh-Yu Wang

Steve Yueh-Yu Wang 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).

  • Dog toy for dispensing dog food
    Patent number: 6073581
    Abstract: A ball-like dog toy includes a spherical shell and a cylindrical valve, the spherical shell being formed of two symmetrical half shells, the half shells having ribs and partition boards, the cylindrical valve being mounted in a hole on the spherical shell and retained between the ribs and partition boards of the half shells and rotated within a limited angle, wherein dog food is discharged out of the spherical shell through the cylindrical valve when the spherical shell is rolled on the ground; discharging of dog food is stopped when the dog stops from playing with the dog toy.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: June 13, 2000
    Inventor: Steve Yueh-Yu Wang
  • Toy for pet
    Patent number: D407869
    Type: Grant
    Filed: May 30, 1997
    Date of Patent: April 6, 1999
    Inventor: Steve Yueh-Yu Wang