Patents by Inventor Lawrence Lillwitz

Lawrence Lillwitz 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).

  • Selective methylation catalyst, method of catalyst manufacture and methylation process
    Publication number: 20050054889
    Abstract: Novel catalysts and processes in accordance with the invention can accomplish high selectivity and conversion of naphthalenic compounds such as the conversion of methylnaphthalene (2-MN) or naphthalene to 2,6-dimethylnaphthalene (2,6-DMN). The catalysts are prepared by treating, for example, a ZSM-5-type material with iron in the presence of a halogen such as a fluoride. The resulting catalyst includes iron, as well as a significant portion of aluminum present in the ZSM-5-type starting material. Processes for using the catalysts also are disclosed.
    Type: Application
    Filed: January 29, 2001
    Publication date: March 10, 2005
    Inventors: Chunshan Song, Jian-Ping Shen, Lawrence Lillwitz