Patents Assigned to Low Emissions Technologies Research and Development Partnership
  • Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process
    Patent number: 6165934
    Abstract: Disclosed is a catalytic material of a calcined noble metal-doped hydrous titanium oxide with a copper promoter compound. The catalytic material is effective for NO.sub.x reduction in an oxidizing exhaust stream form a combustion process is disclosed. Also described is a device for reduction of nitrogen oxides in an exhaust stream, particularly an automotive exhaust stream, that includes a substrate coated with the activated noble-metal doped hydrous metal oxide of the invention and methods for preparing the device.
    Type: Grant
    Filed: November 3, 1998
    Date of Patent: December 26, 2000
    Assignee: Low Emissions Technologies Research and Development Partnership
    Inventors: Timothy J. Gardner, Stephen E. Lott, Steven J. Lockwood, Linda I. McLaughlin
  • Power supply for dielectric barrier discharge plasma
    Patent number: 6156162
    Abstract: A method of driving the electrodes of a dielectric barrier discharge device. The driving signal is a pulsed signal where the pulses have alternating polarities. In one embodiment, the pulse signal includes groups of opposite polarity pulses where a second pulse in each group immediately follows a first pulse and where the group of pulses are spaced from each other. This allows the charge trapped on the surface of the dielectric barrier of the device to be added power to the electric field generated by the following, opposite polarity pulse.
    Type: Grant
    Filed: March 2, 1998
    Date of Patent: December 5, 2000
    Assignee: Low Emissions Technologies Research and Development Partnership
    Inventor: John William Hoard
  • Material and system for catalytic reduction of nitrogen oxide in an exhaust stream of a combustion process
    Patent number: 5830421
    Abstract: A catalytic material of activated hydrous metal oxide doped with platinum, palladium, or a combination of these, and optionally containing an alkali or alkaline earth metal, that is effective for NO.sub.X reduction in an oxidizing exhaust stream from a combustion process is disclosed. A device for reduction of nitrogen oxides in an exhaust stream, particularly an automotive exhaust stream, the device having a substrate coated with the activated noble-metal doped hydrous metal oxide of the invention is also provided.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: November 3, 1998
    Assignee: Low Emissions Technologies Research and Development Partnership
    Inventors: Timothy J. Gardner, Stephen E. Lott, Steven J. Lockwood, Linda I. McLaughlin
  • Exhaust system with emissions storage device and plasma reactor
    Patent number: 5746984
    Abstract: An exhaust system for a combustion system, comprising a storage device for collecting NO.sub.x, hydrocarbon, or particulate emissions, or mixture of these emissions, and a plasma reactor for destroying the collected emissions is described. After the emission is collected in by the storage device for a period of time, the emission is then destroyed in a non-thermal plasma generated by the plasma reactor. With respect to the direction of flow of the exhaust stream, the storage device must be located before the terminus of the plasma reactor, and it may be located wholly before, overlap with, or be contained within the plasma reactor.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: May 5, 1998
    Assignee: Low Emissions Technologies Research and Development Partnership
    Inventor: John W. Hoard