Patents by Inventor Ramakrishna Gopal Dontha

Ramakrishna Gopal Dontha 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).

  • Method and apparatus to enhance fractional efficiency of diesel and gasoline particulate filters
    Patent number: 11753975
    Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.
    Type: Grant
    Filed: December 5, 2022
    Date of Patent: September 12, 2023
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Changsheng C. Su, A. Carl McDonald, Ramakrishna Gopal Dontha, Niklas M. Schmidt, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc, Yujun Wang
  • Method and Apparatus to Enhance Fractional Efficiency of Diesel and Gasoline Particulate Filters
    Publication number: 20230160326
    Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.
    Type: Application
    Filed: December 5, 2022
    Publication date: May 25, 2023
    Applicant: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: Changsheng C. Su, A. Carl McDonald, Ramakrishna Gopal Dontha, Niklas M. Schmidt, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc, Yujun Wang
  • Method and apparatus to enhance fractional efficiency of diesel and gasoline particulate filters
    Patent number: 11519310
    Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: December 6, 2022
    Assignee: Cummins Emission Solutions Inc.
    Inventors: Changsheng C. Su, A. Carl McDonald, Jr., Ramakrishna Gopal Dontha, Niklas M. Schmidt, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc, Yujun Wang
  • METHOD AND APPARATUS TO ENHANCE FRACTIONAL EFFICIENCY OF DIESEL AND GASOLINE PARTICULATE FILTERS
    Publication number: 20220178285
    Abstract: An exhaust aftertreatment system for increasing fractional efficiency of diesel or gasoline particulate filters includes a particulate filter that includes a housing and a filter substrate positioned in the housing. The filter substrate is pre-conditioned with an aqueous solution or suspension configured to decompose or evaporate in response to exposure to heat so as to precondition the filter substrate.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 9, 2022
    Applicant: CUMMINS EMISSION SOLUTIONS INC.
    Inventors: Changsheng C. Su, A. Carl McDonald, JR., Ramakrishna Gopal Dontha, Niklas M. Schmidt, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc, Yujun Wang
  • TREATED SCR CATALYSTS WITH ENHANCED SULFUR RESISTANCE
    Publication number: 20220112824
    Abstract: A method includes: providing a SCR system comprising a SCR catalyst; heating the SCR system to a temperature greater than 500 degrees Celsius for a predetermined time so as to increase sulfur resistance of the SCR catalyst; and installing the SCR system in an aftertreatment system.
    Type: Application
    Filed: January 10, 2020
    Publication date: April 14, 2022
    Applicant: Cummins Emission Solutions Inc.
    Inventors: Changsheng C. Su, Yuanzhou Xi, Jinqian Gong, Ramakrishna Gopal Dontha, Nathan A. Ottinger, Z. Gerald Liu, James C. Clerc