Patents by Inventor Paul Ratnasamy

Paul Ratnasamy 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: 20150252270
    Abstract: A catalytic process is provided which produces in a single reaction branched, cyclic and aromatic hydrocarbons, or cracked straight-chain hydrocarbons, from fatty acids in which the fatty acids are reacted over a multifunctional catalyst and undergo both decarboxylation and further conversion(isomerization, cyclization, aromatization, or cracking) to form reaction products useful as fuels and for other applications that require a source of energy, or as feedstock for hydrocarbon-based commercial products such as surfactants, solvents and lubricants.
    Type: Application
    Filed: March 4, 2015
    Publication date: September 10, 2015
    Inventors: Paul Ratnasamy, Moises A. Carreon, Masoudeh Ahmadi
  • Publication number: 20150080623
    Abstract: A catalytic process is provided which produces in a single reaction branched, cyclic and aromatic hydrocarbons, or cracked straight-chain hydrocarbons, from fatty acids in which the fatty acids are reacted over a multifunctional catalyst and undergo both decarboxylation and a further transformation (isomerization, cyclization, aromatization, or cracking) to form reaction products useful as fuels and for other applications that require a source of energy, or as feedstock for hydrocarbon-based commercial products such as surfactants, solvents and lubricants.
    Type: Application
    Filed: September 18, 2014
    Publication date: March 19, 2015
    Inventors: Paul Ratnasamy, Moises A. Carron, Masoudeh Ahmadi
  • Patent number: 8785709
    Abstract: Gallium-niobium oxide catalysts are disclosed herein for converting linear olefinic hydrocarbons to branched olefinic hydrocarbons through isomerization, the latter being capable for use fuel for their desirable properties.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 22, 2014
    Assignee: University of Louisville Research Foundation, Inc.
    Inventors: Paul Ratnasamy, Moises Carreon, Chinmay Deshmane
  • Publication number: 20140046101
    Abstract: Catalytic processes for converting carboxylic acids obtained from biomass and other natural or industrial sources into paraffinic or olefinic hydrocarbons through decarboxylation, along with products formed from such hydrocarbons, in which the carbon chain length, the ratio of carbon-14 to carbon-12, and the ratio of odd number to even number of carbons in the chain are among factors which are indicative or otherwise useful for the detection of hydrocarbons formed by undergoing the claimed processes.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 13, 2014
    Applicant: University of Louisville Research Foundation, Inc.
    Inventors: Paul Ratnasamy, Sanjay Wagle, Gregory Dicosola
  • Publication number: 20120253087
    Abstract: Gallium-niobium oxide catalysts are disclosed herein for converting linear olefinic hydrocarbons to branched olefinic hydrocarbons through isomerisation, the latter being capable for use fuel for their desirable properties.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Inventors: Paul Ratnasamy, Moises Carreon, Chinmay Deshmane
  • Publication number: 20120203040
    Abstract: Reaction catalysts and supports as disclosed herein are utilized in a process for converting carboxylic acids, which are derived from molecules found in various feedstocks of biological origin as well as various byproducts of industrial processes, to linear paraffinic hydrocarbons, the latter being capable of use in various applications, including as an alternative source of fuel.
    Type: Application
    Filed: February 3, 2012
    Publication date: August 9, 2012
    Applicant: UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION, INC.
    Inventor: Paul Ratnasamy
  • Publication number: 20110295027
    Abstract: Catalytic isomerisation of fatty acid esters to form branched fatty acid esters comprises the steps of contacting a feedstock having at least one fatty acid ester with a catalyst and isolating from other reaction products branched fatty acid esters that are produced. The catalyst is a crystalline porous silicoaluminophosphate catalyst having silicon, aluminum, and phosphorous atoms in lattice framework positions. The branched fatty acid esters formed thereby demonstrate properties suitable for use in various applications.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 1, 2011
    Applicant: UNIVERSITY OF LOUISVILLE RESEARCH FOUNDATION, INC.
    Inventors: Paul Ratnasamy, Moises A. Carreon
  • Publication number: 20110015447
    Abstract: The present invention provides a process for the preparation of biofuels or biofuel additives from glycerol. More particularly, it provides a process for the preparation of glycerol-ethers by etherification of glycerol with an alcohol in the presence of solid acid catalyst.
    Type: Application
    Filed: March 13, 2008
    Publication date: January 20, 2011
    Inventors: Darbha Srinivas, Paul Ratnasamy, Lakshi Saikia
  • Patent number: 7842653
    Abstract: The present invention provides an improved process for the preparation of lubricants from vegetable oil or fat obtained from animal source. The present invention involves a reaction of vegetable oil or fat with an alcohol in the presence of a double metal cyanide catalyst, at a temperature in the range of 150° to 200° C. for a period of 3-6 hrs to obtain the desired bio-lubricant.
    Type: Grant
    Filed: May 26, 2006
    Date of Patent: November 30, 2010
    Assignee: Council of Scientific & Industrial Research
    Inventors: Srinivas Darbha, Rajendra Srivastava, Paul Ratnasamy
  • Patent number: 7754643
    Abstract: The present invention provides a novel transesterification catalyst having the general formula: Zn3M2(CN)n(ROH).xZnCl2.yH2O wherein R is tertiary-butyl and M is a transition metal ion selected from Fe, Co and Cr, x varies from 0 to 0.5, y varies from 3-5 and n is 10 or 12. The above said catalyst is useful for an efficient transesterification of glycerides, fatty acid esters and cyclic carbonates on reactions with alcohols.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: July 13, 2010
    Assignee: Council of Scientific & Industrial Research
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Publication number: 20090326252
    Abstract: Processes for preparation of fatty acid alkyl esters are described herein. The processes include contacting fatty acid glycerides with alcohols in the presence of a catalyst separating the reaction products from the catalyst, and separating the fatty acid alkyl esters from the reaction products. The catalyst includes a metal from Group VIB of the Periodic Table, a metal from Group IIIA of the Periodic Table, and an element from Group VA of the Periodic Table.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 31, 2009
    Inventors: Darbha Srinivas, Paul Ratnasamy, Sanjeevani Amrit Pardhy, Thirumalaiswamy Raja, Shilpa Shirish Deshpande, Vijay Vasant Bokade, Kashinath Joti Wagmare, Arshia Altaf Lalljee, Surya Prakash Babu, Karukappadath Kunjimoideen Abdul Rashid, Khaliji Anas, Chennampilly Ummer Aniz
  • Patent number: 7518012
    Abstract: The present invention provides a process for the preparation of dialkyl carbonates of general formula (1) wherein R=alkyl (C1-C8) or C6H5CH2 the said process comprises a reaction in between cyclic carbonate and alcohol, in the presence of a solid, double metal cyanide complex catalyst, at a temperature in the range of 140-180° C., for a period of 4-10 hrs, followed by the separation of catalyst from the above said reaction mixture by known methods to obtain the desired product.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: April 14, 2009
    Assignee: Council of Scientific & Industrial Research
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Patent number: 7482480
    Abstract: The present invention provides a process for the preparation of hydrocarbon fuels, which comprises contacting fatty acid glycerides with alcohols in the presence of a solid, double metal cyanide catalyst at a temperature in the range of 150° to 200° C. for a period of 2-6 hrs and separating the catalyst from the above said reaction mixture to obtain the desired hydrocarbon fuel.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: January 27, 2009
    Assignee: Council of Scientific & Industrial Research
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Patent number: 7405319
    Abstract: The present invention provides an improved process for the preparation of carbamates with high selectivity of pharmaceutical interest by an eco-friendly, non-toxic, phosgene-/isocyanate-/CO-free clean route through a reaction of amine, organic halide compound and carbon dioxide in the presence of a solid, reusable catalyst at moderate conditions and does not require additional cocatalyst/promoter as well as solvent.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: July 29, 2008
    Assignee: Council of Scientific and Industrial Research
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Patent number: 7375224
    Abstract: The present invention provides an adenine modified solid, ordered, mesoporous, bifunctional, organo-inorganic silica-based catalyst, its method of preparation and also a process for the production of cyclic carbonates of the formula hereinbelow wherein R?H, CH2Cl, CH3, C4H9, C6H11, C6H5.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: May 20, 2008
    Assignee: Council of Scientific and Industrial Research
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Publication number: 20070276146
    Abstract: The present invention provides an adenine modified solid, ordered, mesoporous, bifunctional, organo-inorganic silica-based catalyst, its method of preparation and also a process for the production of cyclic carbonates of the formula hereinbelow wherein R?H, CH2Cl, CH3, C4H9, C6H11, C6H5
    Type: Application
    Filed: May 23, 2006
    Publication date: November 29, 2007
    Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Publication number: 20070270605
    Abstract: The present invention provides an improved process for the preparation of carbamates with high selectivity of pharmaceutical interest by an eco-friendly, non-toxic, phosgene-/isocyanate-/CO-free clean route through a reaction of amine, organic halide compound and carbon dioxide in the presence of a solid, reusable catalyst at moderate conditions and does not require additional cocatalyst/promoter as well as solvent
    Type: Application
    Filed: May 22, 2006
    Publication date: November 22, 2007
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Publication number: 20070093380
    Abstract: The present invention provides a novel transesterification catalyst having the general formula: Zn3M2(CN)n(ROH).xZnCl2.yH2O wherein R is tertiary-butyl and M is a transition metal ion selected from Fe, Co and Cr, x varies from 0 to 0.5, y varies from 3-5 and n is 10 or 12. The above said catalyst is useful for an efficient transesterification of glycerides, fatty acid esters and cyclic carbonates on reactions with alcohols.
    Type: Application
    Filed: March 30, 2006
    Publication date: April 26, 2007
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Publication number: 20070083056
    Abstract: The present invention provides a process for the preparation of hydrocarbon fuels, which comprises contacting fatty acid glycerides with alcohols in the presence of a solid, double metal cyanide catalyst at a temperature in the range of 150° to 200° C. for a period of 2-6 hrs and separating the catalyst from the above said reaction mixture to obtain the desired hydrocarbon fuel.
    Type: Application
    Filed: March 30, 2006
    Publication date: April 12, 2007
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy
  • Publication number: 20070083062
    Abstract: The present invention provides a process for the preparation of dialkyl carbonates of general formula (1) wherein R=alkyl (C1-C8) or C6H5CH2 the said process comprises a reaction in between cyclic carbonate and alcohol, in the presence of a solid, double metal cyanide complex catalyst, at a temperature in the range of 140-180° C., for a period of 4-10 hrs, followed by the separation of catalyst from the above said reaction mixture by known methods to obtain the desired product.
    Type: Application
    Filed: March 30, 2006
    Publication date: April 12, 2007
    Inventors: Darbha Srinivas, Rajendra Srivastava, Paul Ratnasamy