Patents by Inventor Tung-Yu Chia

Tung-Yu Chia 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).

  • Active carbon and a method of preparing the same
    Patent number: 3996161
    Abstract: When activated by polar compounds containing nonpolar groups bonded with polar groups, coal powders provide inexpensive suitable active carbon for treatment of waste liquid.
    Type: Grant
    Filed: November 26, 1974
    Date of Patent: December 7, 1976
    Inventor: Tung-Yu Chia
  • Method of desulfurizing coal
    Patent number: 3988120
    Abstract: A method of desulfurizing high sulfur low grade coal by immerising it in an aqueous solution of a polar compound containing nonpolar groups bonded with polar groups, thereby providing low sulfur coal.
    Type: Grant
    Filed: November 26, 1974
    Date of Patent: October 26, 1976
    Inventor: Tung-Yu Chia