Patents by Inventor Fong Z. Li

Fong Z. Li 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).

  • Stronger catalyst using selective washcoat location
    Patent number: 6821492
    Abstract: A strengthened thin-walled catalytic converter substrate includes thin perimeter walls and thin interior walls defining cells and a catalyst washcoat selectively disposed on the substrate. Washcoat thickness is increased in those cells having the most impact on final catalyst strength, typically the outer cells defined by the perimeter walls. A method for maximizing overall catalyst strength with minimal substrate thermal mass includes selectively applying washcoat based on desired substrate strength and converter assembly method.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: November 23, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Stephen Joe Myers, Michael Ralph Foster, Fong Z. Li