Patents by Inventor Herbert Florey Martins DaCosta

Herbert Florey Martins DaCosta 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).

  • Exhaust system having catalytically active particulate filter
    Patent number: 8828325
    Abstract: A catalyst is disclosed. The catalyst contains a ternary nitride and at least one of gold, osmium, iridium, palladium, rhodium, rhenium, ruthenium, or cesium. The catalyst may be used for a particulate filter in an engine exhaust treatment system.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: September 9, 2014
    Assignee: Caterpillar Inc.
    Inventors: Herbert Florey Martins DaCosta, Thomas Edward Paulson, Svetlana Mikhailovna Zemskova, James Joshua Driscoll, Wade James Robel
  • System for removing particulate matter from exhaust streams
    Publication number: 20100018850
    Abstract: An aspect of the present disclosure is directed to a system for removing particulate matter from an exhaust stream. The system may include an ionization device configured to ionize particles of an exhaust stream. The system may further include an electromagnetic field generating device configured to deflect the ionized particles onto an inner-surface of an exhaust passageway, the inner-surface of the exhaust passageway being coated with a substance for lowering activation energy for a reaction of the ionized particles. The system may further include a regeneration means configured to remove particles from the exhaust passageway.
    Type: Application
    Filed: July 28, 2008
    Publication date: January 28, 2010
    Inventors: Atanu Adhvaryu, Herbert Florey Martins DaCosta
  • On-board hydrogen generator
    Publication number: 20100018476
    Abstract: A hydrogen generator for use with an engine is disclosed. The hydrogen generator has an exhaust duct situated to receive exhaust from the engine, and an SCR device located within the exhaust duct. The hydrogen generator also has a housing in fluid communication with the exhaust duct upstream of the SCR device, an electrolyte solution disposed within the housing, and a plurality of electrodes at least partially submerged in the electrolyte solution. The electrodes are electrically powered to produce hydrogen gas, and the hydrogen gas is directed to mix with the exhaust.
    Type: Application
    Filed: May 31, 2007
    Publication date: January 28, 2010
    Inventors: Svetlana Mikhailovna Zemskova, Herbert Florey Martins DaCosta, Mark Jay Andrews
  • Exhaust system having a carbon oxide catalyst
    Publication number: 20090194741
    Abstract: A catalytic filter system is disclosed. The catalytic filter system contains a catalyst including a ternary nitride and at least one of gold, osmium, iridium, palladium, rhodium, rhenium, ruthenium, or cesium. The catalytic filter system may further include an energy source situated to impart energy to the catalyst.
    Type: Application
    Filed: January 31, 2008
    Publication date: August 6, 2009
    Inventors: Herbert Florey Martins DaCosta, Thomas Edward Paulson, Svetlana Mikhailovna Zemskova, James Joshua Driscoll
  • Exhaust system having catalytically active particulate filter
    Publication number: 20090056320
    Abstract: A catalyst is disclosed. The catalyst contains a ternary nitride and at least one of gold, osmium, iridium, palladium, rhodium, rhenium, ruthenium, or cesium. The catalyst may be used for a particulate filter in an engine exhaust treatment system.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Inventors: Herbert Florey Martins DaCosta, Thomas Edward Paulson, Svetlana Mikhailovna Zemskova, James Joshua Driscoll, Wade James Robel