Patents by Inventor Ramesh M. Kakwani

Ramesh M. Kakwani 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).

  • Diesel exhaust article and catalyst compositions therefor
    Patent number: 7673448
    Abstract: A self-cleaning diesel exhaust particulate filter system is disclosed wherein burn-off of collected particulate matter is accomplished at normal exhaust gas temperatures, the filter system being provided with a catalyst mixture of a co-formed ceria-zirconia composite and, optionally, a base metal oxide, the presence of which allows regeneration of filters at temperatures that are readily achieved in diesel exhaust systems, including operating conditions that are at low load where lower exhaust temperatures exist.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: March 9, 2010
    Assignee: BASF Catalysts LLC
    Inventors: Kenneth E. Voss, Kevin Hallstrom, Ramesh M. Kakwani, Shiang Sung
  • Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines
    Patent number: 7143578
    Abstract: A diesel engine aftertreatment exhaust system uses catalyzed soot filters for particulate matter reduction and urea SCR catalysts for NOx reduction on diesel engines in a combined system to lower particulate matter and NOx at the same time. With this integral emission control system, diesel engines are able to meet ultra low emission standards.
    Type: Grant
    Filed: October 26, 2004
    Date of Patent: December 5, 2006
    Assignee: Engelhard Corporation
    Inventors: Ramesh M. Kakwani, Kenneth C. Voss, Joseph A. Patchett, Karl R. Grimston
  • Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines
    Patent number: 6826906
    Abstract: A diesel engine aftertreatment exhaust system uses catalyzed soot filters for particulate matter reduction and urea SCR catalysts for NOx reduction on diesel engines in a combined system to lower particulate matter and NOx at the same time. With this integral emission control system, diesel engines are able to meet ultra low emission standards.
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: December 7, 2004
    Assignee: Engelhard Corporation
    Inventors: Ramesh M. Kakwani, Kenneth C. Voss, Joseph A. Patchett, Karl R. Grimston
  • Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines
    Publication number: 20020044897
    Abstract: A diesel engine aftertreatment exhaust system uses catalyzed soot filters for particulate matter reduction and urea SCR catalysts for NOx reduction on diesel engines in a combined system to lower particulate matter and NOx at the same time. With this integral emission control system, diesel engines are able to meet ultra low emission standards.
    Type: Application
    Filed: March 23, 2001
    Publication date: April 18, 2002
    Inventors: Ramesh M. Kakwani, Kenneth C. Voss, Joseph A. Patchett, Karl R. Grimston
  • Thermal ignition combustion system
    Patent number: 4738227
    Abstract: The thermal ignition combustion system comprises means for providing walls defining an ignition chamber, the walls being made of a material having a thermal conductivity greater than 20 W/m.degree. C. and a specific heat greater than 480 J/kg.degree. C. with the ignition chamber being in constant communication with the main combustion chamber, means for maintaining the temperature of the walls above a threshold temperature capable of causing ignition of a fuel, and means for conducting fuel to the ignition chamber.
    Type: Grant
    Filed: September 16, 1986
    Date of Patent: April 19, 1988
    Assignee: Adiabatics, Inc.
    Inventors: Roy Kamo, Ramesh M. Kakwani, Edgars Valdmanis, Melvins E. Woods