Patents by Inventor Martyn Vincent Twigg

Martyn Vincent Twigg 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).

  • Emission control
    Patent number: 6294141
    Abstract: An emission control system especially for light duty diesel engines has a first catalyst, 2, positioned upstream of a second catalyst, 3. The first catalyst converts NO to NO2 and the second catalyst oxidises HC, CO and VOF. The tendency of the second catalyst to collect soot particles is reduced by combustion of the soot particles by NO2 from the first catalyst.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: September 25, 2001
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Martyn Vincent Twigg, Anthony John Joseph Wilkins, Nigel Simon Will