Patents by Inventor Ou-Yang Chiu

Ou-Yang Chiu 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).

  • Process for making speckled and foamed plastic article
    Patent number: 5198160
    Abstract: A novel process for fabricating a multi-colored foamed speckled thermoplastic sheet is disclosed, wherein differently colored preformed thermoplastic sheets are separately comminuted into particles by grinding the sheets at the temperature about equal to the glass-transition temperatures of the sheets. The ground fine particles of different colors are mixed in an appropriate ratio and are then calendered to form sheets. This process is economical and convenient for mass production.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: March 30, 1993
    Inventor: Ou-Yang Chiu