Patents by Inventor Trikur Anantharaman Ramanarayanan

Trikur Anantharaman Ramanarayanan 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).

  • Patent number: 6942739
    Abstract: The present invention is directed to a process for producing pearlite from an iron containing article comprising the steps of, (a) heating an iron containing article comprising at least 50 wt % iron for a time and at a temperature sufficient to convert at least a portion of said iron from a ferritic structure to an austenitic structure, (b) exposing said austenitic structure, for a time sufficient and at a temperature of about 727 to about 900° C., to a carbon supersaturated environment to diffuse carbon into said austenitic structure and (c) cooling said iron containing article to form a continuous pearlite structure.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: September 13, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Changmin Chun, Trikur Anantharaman Ramanarayanan, James Dirickson Mumford, Adnan Ozekcin
  • Patent number: 6737175
    Abstract: A method for inhibiting metal dusting corrosion of surfaces exposed to supersaturated carbon environments comprising constructing said surfaces of, or coating said surfaces with a copper based alloy. The invention is also directed to a composition resistant to metal dusting.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: May 18, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Trikur Anantharaman Ramanarayanan, Changmin Chun, James Dirickson Mumford
  • Patent number: 6692838
    Abstract: The invention includes a composition of matter which is resistant to metal dusting and a method for preventing metal dusting on metal surfaces exposed to carbon supersaturated environments.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: February 17, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Trikur Anantharaman Ramanarayanan, ChangMin Chun
  • Patent number: 6679987
    Abstract: The invention relates to processes for treating acidic crudes or fractions thereof to reduce or eliminate their acidity and corrosivity by addition of suitable amounts of Group IA or Group IIA oxides, hydroxides and hydrates and Group IIA metal naphthenate salts. The process has the additional benefits of reducing materials handling problems associated with treating acidic crude oils using liquid solvents and in reducing emulsion formation.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: January 20, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Saul Charles Blum, Guido Sartori, David William Savage, Martin Leo Gorbaty, Bruce Henry Ballinger, Michael Paul Anderson, Trikur Anantharaman Ramanarayanan, David J. Martella
  • Patent number: 6648988
    Abstract: Furnace run length extension by fouling control utilizing a pigging-passivation process.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: November 18, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Trikur Anantharaman Ramanarayanan, Ashok Uppal, Changmin Chun
  • Publication number: 20030175544
    Abstract: The invention includes a composition of matter which is resistant to metal dusting and a method for preventing metal dusting on metal surfaces exposed to carbon supersaturated environments.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 18, 2003
    Inventors: Trikur Anantharaman Ramanarayanan, ChangMin Chun
  • Publication number: 20030079806
    Abstract: The present invention is directed to a process for producing pearlite from an iron containing article comprising the steps of, (a) heating an iron containing article comprising at least 50 wt % iron for a time and at a temperature sufficient to convert at least a portion of said iron from a ferritic structure to an austenitic structure, (b) exposing said austenitic structure, for a time sufficient and at a temperature of about 727 to about 900° C., to a carbon supersaturated environment to diffuse carbon into said austenitic structure and (c) cooling said iron containing article to form a continuous pearlite structure.
    Type: Application
    Filed: October 26, 2001
    Publication date: May 1, 2003
    Inventors: Changmin Chun, Trikur Anantharaman Ramanarayanan, James Dirickson Mumford, Adnan Ozekcin
  • Publication number: 20030035889
    Abstract: Furnace run length extension by fouling control utilizing a pigging-passivation process.
    Type: Application
    Filed: August 17, 2001
    Publication date: February 20, 2003
    Inventors: Trikur Anantharaman Ramanarayanan, Ashok Uppal, Changmin Chun
  • Publication number: 20030029528
    Abstract: A method for inhibiting metal dusting corrosion of surfaces exposed to supersaturated carbon environments comprising constructing said surfaces of, or coating said surfaces with a copper based alloy. The invention is also directed to a composition resistant to metal dusting.
    Type: Application
    Filed: December 7, 2001
    Publication date: February 13, 2003
    Inventors: Trikur Anantharaman Ramanarayanan, Changmin Chun, James Dirickson Mumford
  • Patent number: 6054042
    Abstract: The invention relates to a process for treating naphthenic acid containing whole crudes or fraction thereof to reduce or eliminate their acidity by contacting the acidic whole crude or fractions thereof at a suitable temperature typically of less than 200.degree. C. with a neutralizing amount typically from 0.25:1 up to 10:1 of overbased detergent. The process has the additional benefits of reducing materials handling problems associated with emulsion formation in treated crudes.
    Type: Grant
    Filed: August 3, 1998
    Date of Patent: April 25, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Martin L. Gorbaty, David J. Martella, Guido Sartori, David William Savage, Bruce Henry Ballinger, Saul Charles Blum, Michael Paul Anderson, Trikur Anantharaman Ramanarayanan
  • Patent number: 6022494
    Abstract: The invention relates to processes for treating acidic crudes of fractions thereof to reduce or eliminate their acidity and corrosivity by addition of suitable amounts of Group IA of Group IIA oxides, hydroxides and hydrates. The process has the additional benefits of reducing materials handling problems associated with treating acidic crude oils using liquid solvents and in reducing emulsion formation.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: February 8, 2000
    Assignee: Exxon Research and Engineering Co.
    Inventors: Guido Sartori, David William Savage, Martin Leo Gorbaty, Bruce Henry Ballinger, Saul Charles Blum, Michael Paul Anderson, Trikur Anantharaman Ramanarayanan, David J. Martella