Patents by Inventor Ram Rajasekharan

Ram Rajasekharan 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: 10287527
    Abstract: Agricultural residues (biomasses) have come-up as potential valuable renewable resources for transformation into many bio-products. To achieve this goal, the isolation of major biopolymers in their purest form through an economical process is demanded for synthesis of the target fine chemicals without impurities. However, the difficulty of fractionating the biomass into cellulose, hemicellulose and lignin by a simple method has greatly limited their isolation from agricultural residues. Also, the lipids and waxes present on the surface of the agricultural residues protect it from external chemical and microbial agents. To overcome this issue, the lipids and waxes have been isolated from the biomass through two step organic solvents extraction. Thereafter lignin, hemicellulose and cellulose are isolated successively from the de-waxed biomass.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: May 14, 2019
    Assignee: Council of Scientific and Industrial Research
    Inventors: Prasanta Kumar Rout, Ashween Deepak Nannaware, Om Prakash, Ram Rajasekharan
  • Publication number: 20180201870
    Abstract: Agricultural residues (biomasses) have come-up as potential valuable renewable resources for transformation into many bio-products. To achieve this goal, the isolation of major biopolymers in their purest form through an economical process is demanded for synthesis of the target fine chemicals without impurities. However, the difficulty of fractionating the biomass into cellulose, hemicellulose and lignin by a simple method has greatly limited their isolation from agricultural residues. Also, the lipids and waxes present on the surface of the agricultural residues protect it from external chemical and microbial agents. To overcome this issue, the lipids and waxes have been isolated from the biomass through two step organic solvents extraction. Thereafter lignin, hemicellulose and cellulose are isolated successively from the de-waxed biomass.
    Type: Application
    Filed: December 1, 2015
    Publication date: July 19, 2018
    Inventors: Prasanta Kumar Rout, Ashween Deepak Nannaware, Om Prakash, Ram Rajasekharan
  • Patent number: 9199956
    Abstract: The present invention relates to a process for chemical conversion of cellulose isolated from aromatic spent biomass to hydroxymethyl furfural using an eco-friendly and economical liquids system with recoverable and reusable solid Indion catalysts and zeolite-phosphomolybdic acid hybrid catalysts. The present invention further relates to the preparation of an effective hybrid catalyst i.e. zeolite-phosphomolybdic acid catalyst for synthesis of HMF. The selectivity and yield of HMF is nearly doubled in zeolite-phosphomolybdic acid hybrid catalyst compared to the individual catalysts (zeolite or phosphomolybdic acid) or combination of catalysts viz. zeolite and phosphomolybdic acid.
    Type: Grant
    Filed: October 3, 2012
    Date of Patent: December 1, 2015
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Prasanta Kumar Rout, Ashween Deepak Nannaware, Ram Rajasekharan
  • Publication number: 20140350271
    Abstract: The present invention relates to a process for chemical conversion of cellulose isolated from aromatic spent biomass to hydroxymethyl furfural using an eco-friendly and economical liquids system with recoverable and reusable solid Indion catalysts and zeolite-phosphomolybdic acid hybrid catalysts. The present invention further relates to the preparation of an effective hybrid catalyst i.e. zeolite-phosphomolybdic acid catalyst for synthesis of HMF. The selectivity and yield of HMF is nearly doubled in zeolite-phosphomolybdic acid hybrid catalyst compared to the individual catalysts (zeolite or phosphomolybdic acid) or combination of catalysts viz. zeolite and phosphomolybdic acid.
    Type: Application
    Filed: October 3, 2012
    Publication date: November 27, 2014
    Inventors: Prasanta Kumar Rout, Ashween Deepak Nannaware, Ram Rajasekharan
  • Patent number: 8497090
    Abstract: The present invention relates to fungal strains capable of producing insecticide and a process for production of insecticide. It also relates to a method of cultivation of fungal strains and a fermentation medium for culturing the fungal strains.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: July 30, 2013
    Assignee: Indian Institute of Science
    Inventors: Ram Rajasekharan, Chikkarasanahalli Shivegowda Vivekbabu
  • Patent number: 8383128
    Abstract: The present invention relates to a method of treating plant(s) against larval pests by the use of terreulactone. It also relates to a process for producing meroterpenoid from fungus Aspergillus terreus strain MTCC5390.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: February 26, 2013
    Assignee: Indian Institute of Science
    Inventors: Ram Rajasekharan, Vivek Babu Shivegowda, Dodaghatta Krishnarao Venkata Rao
  • Patent number: 7892792
    Abstract: Described herein are recombinant yeast cells that express a cytochrome C gene the expression of which causes the recombinant yeast cells to (i) grow faster than wild type yeast cells of the same species when cultured on glucose medium, and (ii) accumulate high levels of polyunsaturated fatty acid precursor molecules or target gene expression products when grown on oleic acid.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: February 22, 2011
    Assignee: Indian Institute of Science
    Inventors: Pundi N Rangarajan, Ram Rajasekharan, Abhishek Mohanty
  • Publication number: 20110021615
    Abstract: The present invention relates to a method of treating plant(s) against larval pests by the use of terreulactone. It also relates to a process for producing meroterpenoid from fungus Aspergillus terreus strain MTCC5390.
    Type: Application
    Filed: March 3, 2009
    Publication date: January 27, 2011
    Applicant: INDIAN INSTITUTE OF SCIENCE
    Inventors: Ram Rajasekharan, Vivek Babu Shivegowda, Dodaghatta Krishnarao Venkata Rao
  • Publication number: 20100304441
    Abstract: The present invention relates to fungal strains capable of producing insecticide and a process for production of insecticide. It also relates to a method of cultivation of fungal strains and a fermentation medium for culturing the fungal strains.
    Type: Application
    Filed: October 22, 2008
    Publication date: December 2, 2010
    Inventors: Ram Rajasekharan, Chikkarasanahalli Shivegowda Vivekbabu
  • Publication number: 20100041099
    Abstract: Described herein are recombinant yeast cells that express a cytochrome C gene the expression of which causes the recombinant yeast cells to (i) grow faster than wild type yeast cells of the same species when cultured on glucose medium, and (ii) accumulate high levels of polyunsaturated fatty acid precursor molecules or target gene expression products when grown on oleic acid.
    Type: Application
    Filed: June 25, 2009
    Publication date: February 18, 2010
    Inventors: Pundi Narasimhan Rangarajan, Ram Rajasekharan, Abhishek Mohanty
  • Patent number: 7229815
    Abstract: This invention describes novel catalytically active cytosolic enzymes for triacylglycerol biosynthesis from eukaryotic systems. The complex from oleaginous yeast was enzymatically characterized, and was found to contain lysophosphatidic acid acyltransferase, phosphatidic acid phosphatase, diacylglycerol acyltransferase, acyl—acyl carrier protein synthetase, superoxide dismutase and acyl carrier protein. The triacylglycerol biosynthetic machinery rapidly incorporates free fatty acids as well as fatty acyl-coenzyme A into triacylglycerol and its biosynthetic intermediates. Lysophosphatidic acid acyltransferase, phosphatidic acid phosphatase and diacylglycerol acyltransferase from the complex were microsequenced. Acyl carrier protein, superoxide dismutase and diacylglycerol acyltransferase genes were cloned and expressed in bacterial system.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: June 12, 2007
    Assignees: Indian Institute of Science, Bijam Biosciences Private Limited
    Inventor: Ram Rajasekharan
  • Publication number: 20030176540
    Abstract: This invention relates to a novel synergistic reversible solid/semi-solid organic composition, said composition comprising (a) at least one saturated long chain fatty acid and/or its glycerol esters and (b) one or more liquid neutral organic compounds, said ingredients (a) and (b) being present in a ratio between 0.1 to 40% by weight, and a process for producing said synergistic reversible solid/semi-solid organic composition by mixing the ingredients (a) and (b) defined above in a ratio between 0.1 to 40% by weight, at a temperature between 2 to 50° C. and at a pressure in the range of 200 torr to 2500 torr.
    Type: Application
    Filed: May 15, 2002
    Publication date: September 18, 2003
    Inventors: Ram Rajasekharan, Jaiyanth Daniel
  • Publication number: 20030157513
    Abstract: This invention describes novel catalytically active cytosolic enzymes for triacylglycerol biosynthesis from eukaryotic systems. The complex from oleaginous yeast was enzymatically characterized, and was found to contain lysophosphatidic acid acyltransferase, phosphatidic acid phosphatase, diacylglycerol acyltransferase, acyl-acyl carrier protein synthetase, superoxide dismutase and acyl carrier protein. The triacylglycerol biosynthetic machinery rapidly incorporates free fatty acids as well as fatty acyl-coenzyme A into triacylglycerol and its biosynthetic intermediates. Lysophosphatidic acid acyltransferase, phosphatidic acid phosphatase and diacylglycerol acyltransferase from the complex were microsequenced. Acyl carrier protein, superoxide dismutase and diacylglycerol acyltransferase genes were cloned and expressed in bacterial system.
    Type: Application
    Filed: August 29, 2002
    Publication date: August 21, 2003
    Applicant: INDIAN INSTITUTE OF SCIENCE
    Inventor: Ram Rajasekharan
  • Patent number: 6391928
    Abstract: This invention relates to a novel synergistic reversible solid/semi-solid organic composition, said composition comprising (a) at least one saturated long chain fatty acid and/or its glycerol esters and (b) one or more liquid neutral organic compounds, said ingredients (a) and (b) being present in a ratio between 0.1 to 40% by weight, and a process for producing said synergistic reversible solid/semi-solid organic composition by mixing the ingredients (a) and (b) defmed above in a ratio between 0.1 to 40% by weight, at a temperature between 2 to 50° C. and at a pressure in the range of 200 torr to 2500 torr.
    Type: Grant
    Filed: May 12, 2000
    Date of Patent: May 21, 2002
    Assignees: Indian Institute of Science, Nagarjuna Holding Private Limited
    Inventors: Ram Rajasekharan, Jaiyanth Daniel
  • Patent number: 6277786
    Abstract: The invention relates to describe host-specific extracellular phytotoxins produced by Lasiodiplodia theobromae (LT, also Botryodiplodia theobromae) that has a broad range as a pre-emergent and/or post-emergent bioherbicide, this isolate has been deposited in Microbial Type Culture Collection, Chandigarh, India and given an accession number MTCC 3068, a method using LT-toxin has been developed for controlling certain herbs including Parthenium hysterophorus, duckweeds, jimsonweed, black nightshade, prickly sida and Euphorbia hirta, these phytotoxins can be used partially pure, as a cell-and spore-free filtrate, a crude filtrate, or a crude suspension of the culture and optionally along with other additives.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: August 21, 2001
    Assignees: Nagarjuna Holding Private Limited, Indian Institute of Science
    Inventors: Ram Rajasekharan, Rosaline Rodrigues, Sairam Reddy