Patents by Inventor Yeujin Li

Yeujin 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).

  • Gasoline engine emissions treatment systems having particulate traps
    Patent number: 8173087
    Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline direct injection (GDI) engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate trap are provided. An exemplary particulate trap is a soot filter. Additional treatment components can be added downstream of the particulate trap, including NOx traps and SCR catalysts. The TWC catalyst can be coated on both the inlet side and the outlet side of the particulate trap. Alternatively, an oxidation catalyst can be deposited on a particulate trap. Methods of making and using the same are also provided.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 8, 2012
    Assignee: BASF Corporation
    Inventors: Junmei Wei, Knut Wassermann, Yeujin Li
  • GASOLINE ENGINE EMISSIONS TREATMENT SYSTEMS HAVING PARTICULATE TRAPS
    Publication number: 20090193796
    Abstract: Provided are exhaust systems and components suitable for use in conjunction with gasoline direct injection (GDI) engines to capture particulates in addition to reducing gaseous emission such as hydrocarbons, nitrogen oxides, and carbon monoxides. Exhaust treatment systems comprising a three-way conversion (TWC) catalyst located on a particulate trap are provided. An exemplary particulate trap is a soot filter. Additional treatment components can be added downstream of the particulate trap, including NOx traps and SCR catalysts. The TWC catalyst can be coated on both the inlet side and the outlet side of the particulate trap. Alternatively, an oxidation catalyst can be deposited on a particulate trap. Methods of making and using the same are also provided.
    Type: Application
    Filed: February 4, 2009
    Publication date: August 6, 2009
    Applicant: BASF Catalysts LLC
    Inventors: Junmei Wei, Knut Wassermann, Yeujin Li