Patents by Inventor Ramesh Kakwani

Ramesh 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
    Publication number: 20070041881
    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: Application
    Filed: July 28, 2006
    Publication date: February 22, 2007
    Inventors: Kenneth Voss, Kevin Hallstrom, Ramesh Kakwani, Shiang Sung
  • Diesel oxidation catalyst
    Patent number: 7078004
    Abstract: The present invention relates to a method and article for treating a diesel engine exhaust stream. The stream is contacted with an upstream catalytic composition having a cerium component and/or a zeolite component to reduce the quantity and amount of the particulate matter in the exhaust stream. The stream passes from the upstream catalytic composition to a particulate filter located downstream from the upstream catalytic composition.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: July 18, 2006
    Assignee: Engelhard Corporation
    Inventors: Kenneth E. Voss, Joseph C. Dettling, Stanley Roth, Ramesh Kakwani, Yiu Kwan Lui, Alexander Gorel, Gary W. Rice
  • Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines
    Publication number: 20050056004
    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: October 26, 2004
    Publication date: March 17, 2005
    Inventors: Ramesh Kakwani, Kenneth Voss, Joseph Patchett, Karl Grimston
  • Diesel oxidation catalyst
    Publication number: 20030108465
    Abstract: The present invention relates to a method and article for treating a diesel engine exhaust stream. The stream is contacted with an upstream catalytic composition having a cerium component and/or a zeolite component to reduce the quantity and amount of the particulate matter in the exhaust stream. The stream passes from the upstream catalytic composition to a particulate filter located downstream from the upstream catalytic composition.
    Type: Application
    Filed: January 10, 2003
    Publication date: June 12, 2003
    Applicant: ENGELHARD CORPORATION
    Inventors: Kenneth E. Voss, Joseph C. Dettling, Stanley Roth, Ramesh Kakwani, Yiu Kwan Lui, Alexander Gorel, Gary W. Rice