Patents by Inventor Ching-Long Hwang

Ching-Long Hwang 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).

  • Machine for reducing the volume of a bundle of rubbish
    Patent number: 5152467
    Abstract: A machine to reduce the volume of a bundle of rubbish includes a pair of crushing rollers, a grinding plate, a container to enclose the grinding plate and a water tank to supply water into the crushing rollers and the grinding plate, a driving shaft connected to the grinding plate and a device for rotating the driving shaft and the crushing rollers.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: October 6, 1992
    Inventor: Ching-Long Hwang