Patents by Inventor Kalpana Gopalakrishnan
Kalpana Gopalakrishnan 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).
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Patent number: 11452984Abstract: An adsorbent composition for reducing impurities of heat transfer fluids is provided and a process for the preparation of the same. The adsorbent composition comprises a layered double hydroxide in an amount in the range of 15 to 70 wt % of the total mass of the composition; alumina in an amount in the range of 30 to 85 wt % of the total mass of the composition; and optionally activated bauxite in an amount in the range of 15 to 50 wt % of the total mass of the composition. The adsorbent composition is economical and eco-friendly, having feed processing capacity in the range of 58 to 600 gm/gm.Type: GrantFiled: May 18, 2018Date of Patent: September 27, 2022Assignee: RELIANCE INDUSTRIES LIMITEDInventors: Satish Kumar, Sunil Peter, Sunil Agrahari, Kalpana Gopalakrishnan, Dinesh Kakkar, Prakash Kumar, Raksh Vir Jasra
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Patent number: 11053446Abstract: The present disclosure relates to a process to reduce total acid number (TAN) of a heat transfer fluid. The process comprises contacting the heat transfer fluid with an adsorbent composition at a temperature in the range of 50° C. to 350° C. and a pressure in the range of 1 bar to 10 bar to obtain a treated heat transfer fluid having total acid number (TAN) in the range of 0.003 to 0.03 and pH in the range of 6 to 7.5, wherein the adsorbent composition is provided in a fixed bed and the heat transfer fluid is passed through the fixed bed comprising the adsorbent composition at a liquid hourly space velocity (LHSV) in the range of 0.5 per hour to 10 per hour.Type: GrantFiled: May 18, 2018Date of Patent: July 6, 2021Assignee: RELIANCE INDUSTRIES LIMITEDInventors: Prakash Kumar, Satish Kumar, Sunil Agrahari, Sunil Peter, Kalpana Gopalakrishnan, Rajeev Kumar Gupta, Viral B. Desai, Tarun Singla, Dinesh Kakkar, Pankaj Upadhyay, Piyush Vyas, Raksh Vir Jasra
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Patent number: 10875795Abstract: The present disclosure is in the field of chemical sciences. The present disclosure relates to a process for removal of anion from aqueous solution. The process involves removal of sulphate ion from aqueous solution using cation and organic solvent that enables precipitation of the sulphate ion from the aqueous solution. The process is simple, efficient, cost-effective, ecofriendly, enables recovery of sulphate ions, calcium ions as calcium sulphate with high purity and also enables the recovery of organic solvent in the range of about 88% to about 99%.Type: GrantFiled: January 9, 2017Date of Patent: December 29, 2020Assignee: RELIANCE INDUSTRIES LIMITEDInventors: Chintansinh Dharmendrasinh Chudasama, Sumeet Kumar Sharma, Kalpana Gopalakrishnan, Nagesh Sharma, Raksh Vir Jasra
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Publication number: 20200354285Abstract: The present disclosure relates to a water dispersible sulphur fertilizer composition. In one aspect, the fertilizer composition is prepared by mixing molten elemental sulphur with inorganic solid material to obtain a homogenized mixture that is quenched on a cold surface or water to obtain uneven sized flakes, which are mixed with sulphur solubilizing microbes, swelling agent, dispersing agent, binding agent and water, and then pugged and kneaded to obtain dough. The dough is processed to obtain shaped articles, which are dried at a temperature ranging from 25 to 50° C. to obtain the fertilizer composition. In another aspect, the fertilizer composition comprises 70 to 98 wt % elemental sulphur, 0.1 to 30 wt % inorganic solid material, 0.1 to 10 wt % swelling agent, 0.5 to 30 wt % dispersing agent and 0.5 to 30 wt % binding agent of the total weight of the composition. The fertilizer composition has crushing strength in the range of 3.0 to 3.8 Kgf.Type: ApplicationFiled: November 21, 2018Publication date: November 12, 2020Applicant: Reliance Industries LimitedInventors: Kalpeshkumar Bhikhubhai Sidhpuria, Sachin Rawalekar, Prakash Kumar, Kalpana Gopalakrishnan, Mayur Navinchandra Talati, John Lintoan, Hemant Vasant Katti, Raksh Vir Jasra
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Patent number: 10751703Abstract: The present disclosure relates to a reforming catalyst and a process for preparing the same. The acidic functionality of the catalyst is suppressed by using a chloride free alumina and coating the chloride free alumina with Group V B metal oxide in the catalyst, which helps in minimizing the cracking reactions and achieving higher selectivity for liquid hydrocarbons and aromatic hydrocarbons.Type: GrantFiled: June 30, 2016Date of Patent: August 25, 2020Assignee: Reliance Industries LimitedInventors: Nagesh Sharma, Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli, Ajay Kumar, Kalpana Gopalakrishnan, Raksh Vir Jasra
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Publication number: 20200164340Abstract: The present disclosure relates to an adsorbent composition for reducing impurities of heat transfer fluids and a process for the preparation of the same. The adsorbent composition comprises a layered double hydroxide in an amount in the range of 15 to 70 wt % of the total mass of the composition; alumina in an amount in the range of 30 to 85 wt % of the total mass of the composition; and optionally activated bauxite in an amount in the range of 15 to 50 wt % of the total mass of the composition. The present disclosure provides economical and eco-friendly adsorbent composition having feed processing capacity in the range of 58 to 600 gm/gm.Type: ApplicationFiled: May 18, 2018Publication date: May 28, 2020Inventors: Satish KUMAR, Sunil PETER, Sunil AGRAHARI, Kalpana GOPALAKRISHNAN, Dinesh KAKKAR, Prakash KUMAR, Raksh Vir JASRA
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Publication number: 20200157437Abstract: The present disclosure relates to a process to reduce total acid number (TAN) of a heat transfer fluid. The process comprises contacting the heat transfer fluid with an adsorbent composition at a temperature in the range of 50° C. to 350° C. and a pressure in the range of 1 bar to 10 bar to obtain a treated heat transfer fluid having total acid number (TAN) in the range of 0.003 to 0.03 and pH in the range of 6 to 7.5, wherein the adsorbent composition is provided in a fixed bed and the heat transfer fluid is passed through the fixed bed comprising the adsorbent composition at a liquid hourly space velocity (LHSV) in the range of 0.5 per hour to 10 per hour.Type: ApplicationFiled: May 18, 2018Publication date: May 21, 2020Inventors: Prakash KUMAR, Satish KUMAR, Sunil AGRAHARI, Sunil PETER, Kalpana GOPALAKRISHNAN, Rajeev Kumar GUPTA, Viral B. DESAI, Tarun SINGLA, Dinesh KAKKAR, Pankaj UPADHYAY, Piyush VYAS, Raksh Vir JASRA
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Patent number: 10596551Abstract: The present disclosure relates to a reforming catalyst composition comprising a spherical gamma AI2O3 support; at least one Group VB metal oxide sheet coated on to the AI2O3 support; and at least one active metal and at least one promoter metal impregnated on the AI2O3 coated support. The reforming catalyst composition of the present disclosure has improved activity, better selectivity for total aromatics during naphtha reforming and results in less coke formation. The reforming catalyst composition has improved catalyst performance with simultaneous modification of acidic sites as well as metallic sites through metal support interaction. The acid site cracking activity of the catalyst is inhibited because of the use of chloride free alumina support modified with solid acid such as Group VB metal oxide and impregnated with active metals.Type: GrantFiled: August 26, 2015Date of Patent: March 24, 2020Assignee: Reliance Industries LimitedInventors: Nagesh Sharma, Ajay Kumar, Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli, Anilkumar Mettu, Kalpana Gopalakrishnan, Raksh Vir Jasra
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Patent number: 10479876Abstract: The present disclosure relates to a sulphur containing additive for bitumen paving mixtures. The sulphur containing additive comprises sulphur, a mixture of metal oxides, and optionally 5 at least one metal sulphate. The mixture of metal oxides includes calcium oxide, silicon dioxide, aluminum oxide and ferric oxide.Type: GrantFiled: March 22, 2016Date of Patent: November 19, 2019Assignee: Reliance Industries LimitedInventors: Raksh Vir Jasra, Nagarathinam Shenbaga Murthy, Mayur Navinchandra Talati, Lintoan John, Srinivasarao Pothuru, Satish Kumar, Kalpeshkumar Bhikhubhai Sidhpuria, Yogesh Suresh Niwate, Prakash Kumar, Kalpana Gopalakrishnan, Vijayalakshmi Ravi Puranik
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Patent number: 10384199Abstract: A process and system for modifying heterogeneous catalysts by contacting them with chemical compounds to functionalize the surface of the heterogeneous catalyst. A polymetallic catalyst including bimetallic catalyst is functionalized on its surface by employing a precursor of an inorganic compound. The precursor of the inorganic compound is an organometallic compound, and the metal based inorganic compound is aluminum oxide. A process and system for surface modification functionalization of the heterogeneous catalysts at conditions including room temperature and atmospheric pressure.Type: GrantFiled: July 17, 2015Date of Patent: August 20, 2019Assignee: Reliance Industries LimitedInventors: Chudasama Chintansinh Dharmendrasinh, Sachin Rawalekar, Sunil Agrahari, Kalpana Gopalakrishnan, Katravulapalli Veera Venkata Satya Bhaskara Sita Rama Murthy, Ajay Kumar, Anilkumar Mettu, Nagesh Sharma, Raksh Vir Jasra
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Publication number: 20180193822Abstract: The present disclosure relates to a reforming catalyst and a process for preparing the same. The acidic functionality of the catalyst is suppressed by using a chloride free alumina and coating the chloride free alumina with Group V B metal oxide in the catalyst, which helps in minimizing the cracking reactions and achieving higher selectivity for liquid hydrocarbons and aromatic hydrocarbons.Type: ApplicationFiled: June 30, 2016Publication date: July 12, 2018Applicant: Reliance Industries LimitedInventors: Nagesh Sharma, Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli, Ajay Kumar, Kalpana Gopalakrishnan, Raksh Vir Jasra
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Publication number: 20180105694Abstract: The present disclosure relates to a sulphur additive to suppress hydrogen sulphide emissions from Sulphur Extended Asphalt. The sulphur additive of the present disclosure comprises 5 sulphur in an amount ranging from 80 to 98 wt % and at least one aluminosilicate in an amount ranging from 2 to 20 wt %. The sulphur additive of the present disclosure suppresses the H2S emission up to acceptable safe limit during the preparation and application of the sulphur extended asphalt at elevated temperature.Type: ApplicationFiled: March 22, 2016Publication date: April 19, 2018Applicant: Reliance Industries LimitedInventors: Raksh Vir Jasra, Yogesh Suresh Niwate, Kalpana Gopalakrishnan, Satish Kumar, Prakash Kumar, Lintoan John, Mayur Navinchandra Talati, Nagarathinam Shenbaga Murthy, Ravishankar Vishvasrao Desai
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Publication number: 20180072864Abstract: The present disclosure relates to a sulphur containing additive for bitumen paving mixtures. The sulphur containing additive comprises sulphur, a mixture of metal oxides, and optionally 5 at least one metal sulphate. The mixture of metal oxides includes calcium oxide, silicon dioxide, aluminum oxide and ferric oxide.Type: ApplicationFiled: March 22, 2016Publication date: March 15, 2018Applicant: Reliance Industries LimitedInventors: Raksh Vir Jasra, Nagarathinam Shenbaga Murthy, Mayur Navinchandra Talati, Lintoan John, Srinivasarao Pothuru, Satish Kumar, Kalpeshkumar Bhikhubhai Sidhpuria, Yogesh Suresh Niwate, Prakash Kumar, Kalpana Gopalakrishnan, Vijayalakshmi Ravi Puranik
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Publication number: 20170239645Abstract: The present disclosure relates to a reforming catalyst composition comprising a spherical gamma AI2O3 support; at least one Group VB metal oxide sheet coated on to the AI2O3 support; and at least one active metal and at least one promoter metal impregnated on the AI2O3 coated support. The reforming catalyst composition of the present disclosure has improved activity, better selectivity for total aromatics during naphtha reforming and results in less coke formation. The reforming catalyst composition has improved catalyst performance with simultaneous modification of acidic sites as well as metallic sites through metal support interaction. The acid site cracking activity of the catalyst is inhibited because of the use of chloride free alumina support modified with solid acid such as Group VB metal oxide and impregnated with active metals.Type: ApplicationFiled: August 26, 2015Publication date: August 24, 2017Applicant: Reliance Industries LimitedInventors: Nagesh Sharma, Ajay Kumar, Veera Venkata Satya Bhaskara Sita Rama Murthy Katravulapalli, Anilkumar Mettu, Kalpana Gopalakrishnan, Raksh Vir Jasra
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Publication number: 20170216829Abstract: The present disclosure relates to a process and system for modifying heterogeneous catalysts by contacting them with chemical compounds. Specifically, the present disclosure relates to an easy and convenient process for surface functionalizing of a heterogeneous catalyst such as polymetallic catalyst including bimetallic catalyst by employing precursor of inorganic compound, wherein the precursor is organometallic compound and wherein the inorganic compound includes but is not limited to a metal based inorganic compound such as aluminium oxide. The present disclosure thus provides for easy and convenient process and system for surface modification/functionalization of heterogeneous catalysts by employing precursor of inorganic compound at conditions including but not limiting to room temperature and atmospheric pressure.Type: ApplicationFiled: July 17, 2015Publication date: August 3, 2017Applicant: Reliance Industries LimitedInventors: Chudasama CHINTANSINH DHARMENDRASINH, Sachin RAWALEKAR, Sunil AGRAHARI, Kalpana GOPALAKRISHNAN, Katravulapalli VEERA VENKATA BHASKARA SITA RAMA MURTHY, Ajay KUMAR, Anilkumar METTU, Nagesh SHARMA, Raksh VIR JASRA
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Publication number: 20170197853Abstract: The present disclosure is in the field of chemical sciences. The present disclosure relates to a process for removal of anion from aqueous solution. The process involves removal of sulphate ion from aqueous solution using cation and organic solvent that enables precipitation of the sulphate ion from the aqueous solution. The process is simple, efficient, cost-effective, ecofriendly, enables recovery of sulphate ions, calcium ions as calcium sulphate with high purity and also enables the recovery of organic solvent in the range of about 88% to about 99%.Type: ApplicationFiled: January 9, 2017Publication date: July 13, 2017Inventors: CHINTANSINH DHARMENDRASINH CHUDASAMA, SUMEET KUMAR SHARMA, KALPANA GOPALAKRISHNAN, NAGESH SHARMA, RAKSH VIR JASRA
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Publication number: 20170106352Abstract: The present disclosure relates to a composition, wherein the composition is a catalyst comprising support matrix, active metal, promoter metal and halide, wherein the support matrix is additionally subjected to a modifier to obtain a modified support matrix. The catalyst in the reaction reduces the percentage coke formation and provides for an enhanced reformate yield having an increase total aromatic yield and C8 aromatic yield when compared to the known/commercially available catalyst for naphtha reforming process, and also improves the quality of reformate obtained at end of the reaction. The disclosure further relates to process of preparation of the catalyst, the catalyst of the present disclosure derived from the process described, displays lower deactivation during the reaction demonstrating increased stability and reduction in the regeneration frequency and thereby making the catalyst economically feasible.Type: ApplicationFiled: October 4, 2016Publication date: April 20, 2017Applicant: RELIANCE INDUSTRIES LIMITEDInventors: Nagesh SHARMA, Ajay Kumar, Katravulapalli VEERA VENKATA SATYA BHASKARA SITA RAMA MURTHY, Anilkumar METTU, Kalpana GOPALAKRISHNAN, Raksh VIR JASRA
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Patent number: 9511356Abstract: There is provided a method for regenerating a spent dehydrogenation catalyst used in the conversion of n-paraffin to olefin. The method comprises method steps for removing the coke by treating the catalyst with an ozone-oxygen stream followed by an oxygen stream. The catalyst is stabilized by passing a nitrogen stream and the stabilized catalyst is rejuvenated by passing an air-nitrogen stream containing a halogenated hydrocarbon. This is followed by reducing the metal oxide in the catalyst by passing hydrogen-nitrogen stream.Type: GrantFiled: December 19, 2014Date of Patent: December 6, 2016Assignee: Reliance Industries LimitedInventors: Shashank Dattatraya Vaidya, Sharad Vasudeorao Lande, Sreedharan Unnikrishnan, Kalpana Gopalakrishnan, Raksh Vir Jasra
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Publication number: 20150111720Abstract: There is provided a method for regenerating a spent dehydrogenation catalyst used in the conversion of n-paraffin to olefin. The method comprises method steps for removing the coke by treating the catalyst with an ozone-oxygen stream followed by an oxygen stream. The catalyst is stabilized by passing a nitrogen stream and the stabilized catalyst is rejuvenated by passing an air-nitrogen stream containing a halogenated hydrocarbon. This is followed by reducing the metal oxide in the catalyst by passing hydrogen-nitrogen stream.Type: ApplicationFiled: December 19, 2014Publication date: April 23, 2015Inventors: Shashank Dattatraya Vaidya, Sharad Vasudeorao Lande, Sreedharan Unnikrishnan, Kalpana Gopalakrishnan, Raksh Vir Jasra
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Patent number: 8753535Abstract: A solid shaped composite adsorbent for reducing deactivated catalyst residues and contaminants from a post polyolefin solution polymerization mixture is disclosed. The composite adsorbent comprises 70-90 wt % of an alumina component; 30-10 wt % of a clay component; and 0.5-3.5 wt % of at least one alkali metal component selected from the group consisting of elements in Group 1A of the modern periodic table.Type: GrantFiled: January 11, 2011Date of Patent: June 17, 2014Assignee: Reliance Industries Ltd, Reliance Technology GroupInventors: Prakash Kumar, Manoj Kumar Srivastava, Kalpana Gopalakrishnan, Vijay Kumar Kaushik, Vijayalakshmi Ravi Puranik