Patents by Inventor Neeraj Thirumalai

Neeraj Thirumalai 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).

  • Linepipe Steel With Alternative Carbon Steel Compositions For Enhanced Sulfide Stress Cracking Resistance
    Publication number: 20230416884
    Abstract: The present disclosure relates to methods and compositions of linepipe steels that transport one or both of crude oil and natural gas. More particularly, the present disclosure relates sulfide stress cracking resistance of carbon steels for use as linepipe in transporting crude oil and natural gas by alternative carbon steel compositions comprising relatively low-manganese contents and/or low-carbon contents, alone or in combination with hydrogen trapping precipitates.
    Type: Application
    Filed: December 1, 2021
    Publication date: December 28, 2023
    Applicant: ExxonMobil Technology and Engineering Company
    Inventors: Neeraj THIRUMALAI, Hyun Jo JUN, Adnan OZEKCIN, Fang CAO
  • Application of high integrity welding and repair of metal components in oil and gas exploration, production and refining
    Patent number: 8141768
    Abstract: A method for welding and repairing cracks in metal parts is provided by subjecting the metal parts to be welded to friction stir welding and the cracks to be repaired to friction stir processing under conditions sufficient to provide a weld joint or crack repair having a preselected property or set of properties based upon the intended use of the weldment. The FSW and FSP methods are advantageous in joining and repairing metal structures and components in applications for natural gas transportation and storage, oil and gas well completion and production, and oil and gas refinery and chemical plants.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: March 27, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Steven J. Ford, Neeraj Thirumalai, James Ronald Rigby, Mark Biegler, Narasimha-Rao Venkata Bangaru, Jayoung Koo, Glen A. Vaughn, Raghavan Ayer, Douglas P. Fairchild
  • Application of high integrity welding and repair of metal components in oil and gas exploration, production and refining
    Publication number: 20070181647
    Abstract: A method for welding and repairing cracks in metal parts is provided by subjecting the metal parts to be welded to friction stir welding and the cracks to be repaired to friction stir processing under conditions sufficient to provide a weld joint or crack repair having a preselected property or set of properties based upon the intended use of the weldment. The FSW and FSP methods are advantageous in joining and repairing metal structures and components in applications for natural gas transportation and storage, oil and gas well completion and production, and oil and gas refinery and chemical plants.
    Type: Application
    Filed: December 21, 2006
    Publication date: August 9, 2007
    Inventors: Steven Ford, Neeraj Thirumalai, James Rigby, Mark Biegler, Narasimha-Rao Venkata Bangaru, Jayoung Koo, Glen Vaughn, Raghavan Ayer, Douglas Fairchild
  • Bimodal and multimodal dense boride cermets with superior erosion performance
    Publication number: 20070128066
    Abstract: Multimodal cermet compositions comprising a multimodal grit distribution of the ceramic phase and method of making are provided by the present invention. The multimodal cermet compositions include a) a ceramic phase and b) a metal binder phase, wherein the ceramic phase is a metal boride with a multimodal distribution of particles, wherein at least one metal is selected from the group consisting of Group IV, Group V, Group VI elements of the Long Form of The Periodic Table of Elements and mixtures thereof, and wherein the metal binder phase comprises at least one first element selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, and at least second element selected from the group consisting of Cr, Al, Si and Y, and Ti.
    Type: Application
    Filed: December 2, 2005
    Publication date: June 7, 2007
    Inventors: ChangMin Chun, Narasimha-Rao Bangaru, Neeraj Thirumalai, Hyun-Woo Jin, Jayoung Koo, John Peterson, Robert Antram, Christopher Fowler, Emery Lendvai-Lintner
  • ADVANCED EROSION-CORROSION RESISTANT BORIDE CERMETS
    Publication number: 20070006679
    Abstract: A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, Group VI elements, Q is boride, R is selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises at least one element selected from Cr, Al, Si and Y.
    Type: Application
    Filed: April 22, 2004
    Publication date: January 11, 2007
    Inventors: Narasimha-Rao Bangaru, ChangMin Chun, Neeraj Thirumalai, Hyun-Woo Jin, Jayoung Koo, John Peterson, Robert Antram, Christopher Fowler
  • Advanced erosion-corrosion resistant boride cermets
    Publication number: 20060266155
    Abstract: A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, Group VI elements, Q is boride, R is selected from the group consisting of Fe, Ni, Co, Mn and mixtures thereof, S comprises at least one element selected from Cr, Al, Si and Y.
    Type: Application
    Filed: August 4, 2006
    Publication date: November 30, 2006
    Inventors: Narasimha-Rao Bangaru, ChangMin Chun, Neeraj Thirumalai, Hyun-Woo Jin, Jayoung Koo, John Peterson, Robert Antram, Christopher Fowler