Patents by Inventor Kon S. Chen

Kon S. Chen 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).

  • Patent number: 4113504
    Abstract: The heavy metal content of sludge waste is fixed in a cementitious solid product by mixing the waste sludge with fixing ingredients comprising vermiculite and cement.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: September 12, 1978
    Assignee: Stauffer Chemical Company
    Inventors: Kon S. Chen, Helmut W. Majewski