Patents by Inventor Kindtoken H. D. Liu

Kindtoken H. D. Liu 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).

  • Hydrodesulfurization and hydrodenitrogenation catalysts obtained from coal mineral matter
    Patent number: 4358398
    Abstract: A hydrotreating catalyst is prepared from coal mineral matter obtained by low temperature ashing coals of relatively low bassanite content by the steps of: (a) depositing on the low temperature ash 0.25-3 grams of an iron or nickel salt in water per gram of ash and drying a resulting slurry; (b) crushing and sizing a resulting solid; and (c) heating the thus-sized solid powder in hydrogen.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: November 9, 1982
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Kindtoken H. D. Liu, Charles E. Hamrin, Jr.