Patents by Inventor Gary M. Leach

Gary M. Leach 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).

  • Three-way catalysts for purification of exhaust gas and method for the preparation of the catalysts
    Patent number: 4500650
    Abstract: This invention relates to a three-way catalyst for use in the purification of exhaust gas from an internal combustion engine, a method of making the same and an exhaust system including a three-way catalyst for an internal combustion engine. Specifically, the three-way catalyst comprises a substrate suitable for the purification of exhaust gas from an internal combustion engine wherein the catalyst comprises a substrate, a refractory oxide layer, tungsten and/or one or more tungsten containing compounds and one or more platinum group metals.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: February 19, 1985
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Michael Wyatt, Gary M. Leach, Ashley M. Gould