Patents by Inventor J.Y. Ryu

J.Y. Ryu 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).

  • Structurally enhanced cracking catalysts
    Publication number: 20040220046
    Abstract: Zeolite microsphere FCC catalysts having a novel morphology comprising a porous matrix and crystallized zeolite freely coating the walls of the pores of the matrix. The catalysts are formed from microspheres containing a metakaolin and an alumina source other than kaolin having a high pore volume.
    Type: Application
    Filed: February 3, 2004
    Publication date: November 4, 2004
    Inventors: David M. Stockwell, Stephen H. Brown, J.Y. Ryu