Patents by Inventor Marianne F. Waldman

Marianne F. Waldman 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).

  • Apparatus and method for filtering particulate and NOx emissions
    Patent number: 7273514
    Abstract: An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (2c, 24c). The porous walls (2c, 24c) filter the particulate. The filtered particulate on inner surfaces of the porous walls is periodically removed or regenerated via back flow of previously filtered exhaust gas. The back flow is caused by creating a pressure difference across the porous walls. The back flow of the previously filtered exhaust gas is simultaneously or sequentially coupled with high velocity through flow of exhaust gas in the channels. In addition, the particulate trap system can be an adsorber-catalyst particulate trap system for filtering particulate and reducing NOx via an adsorber-catalyst trap systems to achieve the EPA 2007 standards.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: September 25, 2007
    Assignee: Illinois Valley Holding Company
    Inventors: John M. Bailey, Marianne F. Waldman, legal representative, Donald J. Waldman, deceased
  • Apparatus and method for filtering particulate and reducing NOx emissions
    Patent number: 6989045
    Abstract: An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (2c, 24c). The porous walls (2c, 24c) filter the particulate. The filtered particulate on inner surfaces of the porous walls is periodically removed or regenerated via back flow of previously filtered exhaust gas. The back flow is caused by creating a pressure difference across the porous walls. The back flow of the previously filtered exhaust gas is simultaneously or sequentially coupled with high velocity through flow of exhaust gas in the channels. In addition, the particulate trap system can be an adsorber-catalyst particulate trap system for filtering particulate and reducing NOx via an adsorber-catalyst trap systems to achieve the EPA 2007 standards.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: January 24, 2006
    Assignee: Illinois Valley Holding Co.
    Inventors: John M. Bailey, Donald J. Waldman, Marianne F. Waldman
  • Apparatus and method for filtering particulate and reducing nox emissions
    Publication number: 20040261374
    Abstract: An apparatus and method for filtering particulate from an internal combustion engine by use of monolithic particulate trap systems having porous walls (2c, 24c). The porous walls (2c, 24c) filter the particulate. The filtered particulate on inner surfaces of the porous walls is periodically removed or regenerated via back flow of previously filtered exhaust gas. The back flow is caused by creating a pressure difference across the porous walls. The back flow of the previously filtered exhaust gas is simultaneously or sequentially coupled with high velocity through flow of exhaust gas in the channels. In addition, the particulate trap system can be an adsorber-catalyst particulate trap system for filtering particulate and reducing NOx via an adsorber-catalyst trap systems to achieve the EPA 2007 standards.
    Type: Application
    Filed: August 1, 2003
    Publication date: December 30, 2004
    Inventors: John M. Bailey, Donald J. Waldman, Marianne F. Waldman