Patents by Inventor Raman Ravishankar

Raman Ravishankar 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).

  • Publication number: 20180346780
    Abstract: In accordance with the present subject matter there is provided a compound of Formula I wherein, R1 is substituted C1 to C10 alkyl; and R2 is substituted C1 to C10 alkyl, a process for preparing a compound of Formula I, and a gel comprising a compound of Formula I. There is also provided a process for separating a hydrophobic material from a mixture of hydrophobic and hydrophilic material using a compound of Formula I.
    Type: Application
    Filed: November 29, 2016
    Publication date: December 6, 2018
    Inventors: Raman Ravishankar, Chinthalapati Sivakesava Raju, Bhaskar Pramanlk, Tanmoy Kar, Peddy Rao, Nettem Venkateswarlu Choudary
  • Publication number: 20180327678
    Abstract: The disclosure relates to an anti fouling composition including a metallic component comprising of at least one alkali metal salt and a non-metallic component and method for preparation of anti fouling composition. The disclosure also relates to a process of reducing fouling in reactors or furnaces using said composition.
    Type: Application
    Filed: November 18, 2016
    Publication date: November 15, 2018
    Inventors: Kanaparthi Ramesh, Raman Ravishankar, Chinthalapati Siva Kesava Raju, Madala Sairamu, Priyanka Saha, Cheerladinne Venkateswarlu, Peddy Venkat Chalapathi Rao, Nettem Venkateswarlu Choudary
  • Publication number: 20180272324
    Abstract: The present disclosure relates to an additive and a catalyst composition for a catalytic cracking process of vacuum gas oil for preparing cracked run naphtha having reduced liquid olefin content, and increased propylene and butylene yields in the LPG fraction. The process makes use of a catalyst composition which is a mixture of an FCC equilibrated catalyst and an additive comprising a zeolite, phosphorus and a combination of metal promoters. The process is successful in achieving high propylene and butylene yields in the LPG fraction along with a lower liquid olefin content and increased aromatic content with increase in RON unit in the resultant cracked run naphtha, as compared to that achieved using an FCC equilibrated catalyst alone.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 27, 2018
    Inventors: Raman RAVISHANKAR, Peddy Venkata Chalapathi RAO, Nettem Venkateswarlu CHOUDARY
  • Publication number: 20180273852
    Abstract: The present disclosure relates to an additive and a catalyst composition for a catalytic cracking process of vacuum gas oil for preparing cracked run naphtha having reduced liquid olefin content, and increased propylene and butylene yields in the LPG fraction. The process makes use of a catalyst composition which is a mixture of an FCC equilibrated catalyst and an additive comprising a zeolite, phosphorus and a combination of metal promoters. The process is successful in achieving high propylene and butylene yields in the LPG fraction along with a lower liquid olefin content and increased aromatic content with increase in RON unit in the resultant cracked run naphtha, as compared to that achieved using an FCC equilibrated catalyst alone.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 27, 2018
    Inventors: Raman RAVISHANKAR, Sunil MEHLA, Somnath KUKADE, Peddy Venkata Chalapathi RAO, Nettem Venkateswarlu CHOUDARY
  • Publication number: 20180265787
    Abstract: The present disclosure relates to an additive and a catalyst composition for a catalytic cracking process of vacuum gas oil for preparing cracked run naphtha having reduced liquid olefin content, and increased propylene and butylene yields in the LPG fraction. The process makes use of a catalyst composition which is a mixture of an FCC equilibrated catalyst and an additive comprising a zeolite, phosphorus and a combination of metal promoters. The process is successful in achieving high propylene and butylene yields in the LPG fraction along with a lower liquid olefin content and increased aromatic content with increase in RON unit in the resultant cracked run naphtha, as compared to that achieved using an FCC equilibrated catalyst alone.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 20, 2018
    Inventors: Raman RAVISHANKAR, Somnath KUKADE, Peddy Venkata Chalapathi RAO, Nettem Venkateswarlu CHOUDARY
  • Publication number: 20180195011
    Abstract: The present disclosure relates to a catalyst for slurry phase hydrocracking of refinery residue and a process for its preparation. The present disclosure provides a very simple method for exfoliation of metal sulphide, and a process of that provides effective slurry phase hydrocracking of refinery residue with a high yield.
    Type: Application
    Filed: June 17, 2016
    Publication date: July 12, 2018
    Inventors: Venkateswarlu Choudary Nettem, Naga Raja Kanuparthy, Raman Ravishankar, Bipul Sarkar, Valavarasu Gnanesekaran, Chalapathi Rao Peddy Venkata, Sriganesh Gandham
  • Patent number: 9919984
    Abstract: The present disclosure relates to a process for the preparation of isomers of xylene. The process includes method step of contacting an activated alkylation catalyst composite with toluene and methanol in the presence of an inert gas, at a temperature of 300 to 500° C. to obtain isomers of xylene. The alkylation catalyst composite used in accordance with the present disclosure comprises a molecular sieve loaded with at least one metal ion. The metal loaded on the molecular sieve is at least one alkali earth metal selected from the group consisting of barium, strontium, magnesium and calcium.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: March 20, 2018
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Raman Ravishankar, Venkata Chalapathi Rao Peddy, Venkateswarlu Choudary Nettem, Ganapati Shanbhag, Vijaykumar Marakatti, Anand Halgeri, Sriganesh Gandham
  • Publication number: 20180066014
    Abstract: In accordance with the present subject matter there is provided peptide-based compounds. methods of making such compounds, gels comprising such compounds, methods of making gels, methods of using such compounds for the containing spill of a hydrocarbon, and methods for reclaiming solvent from gels comprising such compounds.
    Type: Application
    Filed: August 3, 2015
    Publication date: March 8, 2018
    Inventors: Raman RAVISHANKAR, Siva Kesava Raju CHINTHALAPATI, Tanmoy KAR, Bhaskar PRAMANIK, Peddy Venkata Chalapathi RAO, Venkateswarlu Choudary NETTEM
  • Patent number: 9908109
    Abstract: The present disclosure relates to a zeolite based catalyst composition comprising i. at least one rare earth metal, ii. at least one zeolite, and iii. optionally, at least one promoter; wherein, said rare earth metal is impregnated in said zeolite. The amount of said rare earth metal in said composition is in the range of 0.1 to 20 w/w %. The present disclosure also relates to a process for preparing a catalyst composition. Further, the present disclosure relates to a process for reducing olefin content in a hydrocarbon stream using the catalyst of the present disclosure.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: March 6, 2018
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Raman Ravishankar, Sunil Mehla, Peddy Venkata Chalapathi Rao, Nettem Venkateswarlu Choudary, Sriganesh Gandham
  • Patent number: 9901910
    Abstract: The present disclosure relates to a catalyst composition comprising (a) at least one rare earth metal, (b) at least one zeolite, and (c) at least one diluent, wherein, said rare earth metal is impregnated in at least one of (b) and (c); the ratio of said zeolite to said diluent ranges from 1:9 to 9:1; and the amount of said rare earth metal is in the range of 0.1 to 20 w/w %. The present disclosure also relates to a process for preparing a catalyst composition. Further, the present disclosure relates to a process for reducing the olefin content in a hydrocarbon stream using the catalyst of the present disclosure.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: February 27, 2018
    Assignee: Hindustan Petroleum Corporation Limited
    Inventors: Raman Ravishankar, Sunil Mehla, Peddy Venkata Chalapathi Rao, Nettem Venkateswarlu Choudary, Sriganesh Gandham
  • Publication number: 20170114288
    Abstract: Accordingly, the present invention provides a catalyst composition suitable for converting light naphtha comprising one or more of C5 to C8 carbon atoms to aromatic compounds ranging from C6 to C10 carbon atoms, said catalyst composition comprising: (a) a medium pore size zeolite; (b) 0.1 to 5.0 wt % of zinc; and (c) 0.1 to 5 wt % of gallium. Also, the present invention provides a process for converting light naphtha comprising one or more of C5 to C8 carbon atoms to aromatic compounds ranging from C6 to C10 carbon atoms, said process comprising the step of contacting a feedstock comprising the light naphtha with a catalyst composition comprising (a) a medium pore size zeolite; (b) 0.1 to 5.0 wt % of zinc; and (c) 0.1 to 5 wt % of gallium in presence of carrier gas at temperatures ranging from 400° to 600° C.
    Type: Application
    Filed: August 25, 2014
    Publication date: April 27, 2017
    Inventors: Raman Ravishankar, Peddy Venkat Chalapathi Rao, Nettem Venkateswarlu Choudary, Ganapati V. Shanbhag, Hodala Lakshminarayan Janardhan, Anand B. Halgeri, Sriganesh Gandham
  • Publication number: 20170001924
    Abstract: A catalyst composition is provided for isomerization of paraffins comprising of at least one heteropoly acid and reduced graphene oxide. Further provided are a process for preparation of the catalyst composition and a process for isomerization of paraffins using the catalytic composition.
    Type: Application
    Filed: December 15, 2015
    Publication date: January 5, 2017
    Inventors: RAMAN RAVISHANKAR, SAFINAZ SAIF, PEDDY VENKATACHALLAPATHY RAO, VENKATESWARLU CHOUDARY NETTEM, SRIGANESH GANDHAM
  • Publication number: 20170001180
    Abstract: A catalyst composition for isomerization of paraffins includes at least one metal, at least one heteropoly acid and a support material. Further provided are a process for preparation of the catalyst composition and a process for isomerization of paraffins using the catalytic composition.
    Type: Application
    Filed: December 15, 2015
    Publication date: January 5, 2017
    Inventors: RAMAN RAVISHANKAR, SAFINAZ SAIF, SUNIL MEHLA, BENNET CHELLIAN, PEDDY VENKATACHALLAPATHY RAO, VENKATESWARLU NETTEM, SRIGANESH GANDHAM
  • Publication number: 20160221893
    Abstract: The present disclosure relates to a process for the preparation of isomers of xylene. The process includes method step of contacting an activated alkylation catalyst composite with toluene and methanol in the presence of an inert gas, at a temperature of 300 to 500° C. to obtain isomers of xylene. The alkylation catalyst composite used in accordance with the present disclosure comprises a molecular sieve loaded with at least one metal ion. The metal loaded on the molecular sieve is at least one alkali earth metal selected from the group consisting of barium, strontium, magnesium and calcium.
    Type: Application
    Filed: October 25, 2013
    Publication date: August 4, 2016
    Inventors: Raman Ravishankar, Venkata Chalapathi Rao Peddy, Venkateswarlu Choudary Nettem, Ganapati Shanbhag, Vijaykumar Marakatti, Anand Halgeri, Sriganesh Gandham
  • Publication number: 20150273451
    Abstract: The present disclosure relates to a zeolite based catalyst composition comprising i. at least one rare earth metal, ii. at least one zeolite, and iii. optionally, at least one promoter; wherein, said rare earth metal is impregnated in said zeolite. The amount of said rare earth metal in said composition is in the range of 0.1 to 20 w/w %. The present disclosure also relates to a process for preparing a catalyst composition. Further, the present disclosure relates to a process for reducing olefin content in a hydrocarbon stream using the catalyst of the present disclosure.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 1, 2015
    Inventors: Raman Ravishankar, Sunil Mehla, Peddy Venkata Chalapathi Rao, Nettem Venkateswarlu Choudary, Sriganesh Gandham
  • Publication number: 20150273448
    Abstract: The present disclosure relates to a catalyst composition comprising (a) at least one rare earth metal, (b) at least one zeolite, and (c) at least one diluent, wherein, said rare earth metal is impregnated in at least one of (b) and (c); the ratio of said zeolite to said diluent ranges from 1:9 to 9:1; and the amount of said rare earth metal is in the range of 0.1 to 20 w/w %. The present disclosure also relates to a process for preparing a catalyst composition. Further, the present disclosure relates to a process for reducing the olefin content in a hydrocarbon stream using the catalyst of the present disclosure.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 1, 2015
    Inventors: Raman Ravishankar, Sunil Mehla, Peddy Venkata Chalapathi Rao, Nettem Venkateswarlu Choudary, Sriganesh Gandham
  • Patent number: 7976822
    Abstract: Zeolites may be natural or synthetic and are inorganic crystalline aluminosilicates, with a highly regular structure of pores and channels rendering them suitable for molecular sieving, adsorption, ion exchange, dehydration, and rehydration processes for example. They generally have a definite crystalline structure as evidenced by x-ray diffraction. The present invention relates to the area of zeolites and its method of production. More particularly but not exclusively it relates to a novel zeolite ICS-3 in its “as synthesized” and its calcined forms and the method of producing both these forms.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: July 12, 2011
    Assignee: Agency For Science, Technology and Research
    Inventors: Raman Ravishankar, Elango Shanmugam
  • Publication number: 20080305036
    Abstract: Zeolites may be natural or synthetic and are inorganic crystalline aluminosilicates, with a highly regular structure of pores and channels rendering them suitable for molecular sieving, adsorption, ion exchange, dehydration, and rehydration processes for example. They generally have a definite crystalline structure as evidenced by x-ray diffraction. The present invention relates to the area of zeolites and its method of production. More particularly but not exclusively it relates to a novel zeolite ICS-3 in its “as synthesized” and its calcined forms and the method of producing both these forms.
    Type: Application
    Filed: November 19, 2004
    Publication date: December 11, 2008
    Applicant: Agency for Science, Technology and Research
    Inventors: Raman Ravishankar, Elango Shanmugam
  • Patent number: 7112711
    Abstract: A process for oligomerising alkenes having from 3 to 6 carbon atoms which comprises contacting a feedstock comprising a) one or several alkenes having x carbon atoms, and, b) optionally, one or several alkenes having y carbon atoms, x and y being different, with a catalyst containing a zeolite of the MFS structure type, under conditions to obtain selectively oligomeric product containing predominant amounts of certain oligomers. The process is carried out at a temperature comprised between 125 and 175° C. when the feedstock contains only alkenes with 3 carbon atoms and between 140 and 240° C., preferably between 140 and 200° C. when the feedstock contains comprises at least one alkene with 4 or more carbon atoms.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: September 26, 2006
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Georges Marie Karel Mathys, Jihad Mohammed Dakka, Machteld Maria Mertens, Johan A. Martens, Igor V. Mishin, Raman Ravishankar, Roger Eijkhoudt
  • Publication number: 20040006250
    Abstract: A process for oligomerising alkenes having from 3 to 6 carbon atoms which comprises contacting a feedstock comprising a) one or several alkenes having x carbon atoms, and, b) optionally, one or several alkenes having y carbon atoms, x and y being different, with a catalyst containing a zeolite of the MFS structure type, under conditions to obtain selectively oligomeric product containing predominant amounts of certain oligomers. The process is carried out at a temperature comprised between 125 and 175° C. when the feedstock contains only alkenes with 3 carbon atoms and between 140 and 240° C., preferably between 140 and 200° C. when the feedstock contains comprises at least one alkene with 4 or more carbon atoms.
    Type: Application
    Filed: April 14, 2003
    Publication date: January 8, 2004
    Inventors: Georges Marie Karel Mathys, Jihad Mohammed Dakka, Machteld Maria Mertens, Johan A Martens, Igor V Mishin, Raman Ravishankar, Roger Eijkhoudt