Patents by Inventor Sanjay Narayan Nene
Sanjay Narayan Nene 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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Publication number: 20140296151Abstract: The invention relates to a process of preparing low molecular weight peptides from gelatine. The gelatine is broken down into low molecular weight peptides using enzymes from Bacillus sp. to obtain peptides with low ash content. The gelatine is clarified by adjusting the pH to 7 using alkali hydroxide and filtered. The filtered solution is desalted at 20 to 55° C. in a diafiltration mode till the salt content decreases below 0.05% (w/v) The product so obtained is hydrolysed with an enzyme maintaining pH in the range of 7 to 10 and at temperature in the range of 25 to 75° C. The hydrolysed product is filtered through ultrafiltration membrane at temperature in the range of 15 to 55° C. and permeate is concentrateds at temperature in the range of 50 to 100° C. under vacuum to obtain the peptide solution of the invention.Type: ApplicationFiled: October 12, 2012Publication date: October 2, 2014Inventors: Ramchandra Vithal Gadre, Vithal Venkatrao Jogdand, Sanjay Narayan Nene
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Patent number: 8674131Abstract: The dehydrated alkali metal salts of carboxylic acid are dissolved in the alcohol such as methanol or ethanol or butanol to make their solution in corresponding alcohol. The solution alcohol is further treated with carbon dioxide under pressure or at atmospheric pressure at elevated temperature such as 150 to 200° C. The carboxylic acid gets converted into corresponding alkyl ester and calcium carbonate or sodium carbonate or potassium carbonate as the byproduct. Calcium lactate or sodium lactate or sodium acetate or sodium benzoate or sodium salicylate as alkali metal salt solution prepared in methanol or ethanol or butanol when treated with carbon dioxide under pressure or at atmospheric pressure at elevated temperature gets converted to methyl lactate or ethyl lactate or methyl acetate or methyl benzoate or methyl salicylate as product.Type: GrantFiled: September 6, 2010Date of Patent: March 18, 2014Assignee: Council of Scientific and Industrial ResearchInventors: Prashant Purushottam Barve, Bhaskar Dattatraya Kulkarni, Milind Yashwant Gupte, Sanjay Narayan Nene, Ravindra William Shinde
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Publication number: 20120296110Abstract: The dehydrated alkali metal salts of carboxylic acid are dissolved in the alcohol such as methanol or ethanol or butanol to make their solution in corresponding alcohol. The solution alcohol is further treated with carbon dioxide under pressure or at atmospheric pressure at elevated temperature such as 150 to 200° C. The carboxylic acid gets converted into corresponding alkyl ester and calcium carbonate or sodium carbonate or potassium carbonate as the byproduct. Calcium lactate or Sodium lactate or Sodium acetate or Sodium benzoate or Sodium salicylate as alkali metal salt solution prepared in Methanol or Ethanol or Butanol when treated with carbon di-oxide under pressure or at atmospheric pressure at elevated temperature gets converted to Methyl lactate or Ethyl lactate or Methyl acetate or Methyl benzoate or Methyl salicylate as product.Type: ApplicationFiled: September 6, 2010Publication date: November 22, 2012Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Prashant Purushottam Barve, Bhaskar Dattatraya Kulkarni, Milind Yashwant Gupte, Sanjay Narayan Nene, Ravindra William Shinde
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Patent number: 7820859Abstract: The present invention provides a commercially viable process for the preparation of highly pure and optically active L-(+)-lactic acid and S-(?)-methyl lactate, in high yield, obtained from esterification of aqueous crude lactic acid solution produced by sugar cane juice fermentation broth and methanol in continuous counter current trickle phase approach or in continuous counter current bubble column manner, using stabilizers and the methyl lactate so obtained is recovered and followed by purification of reasonably pure methyl lactate using reagent mixture such as sodium bi-carbonate, mono-ethanolamine or di-ethanolamine, urea or sodium-bicarbonate, mono-ethanolamine or di-ethanolamine, thiourea to reduce the impurity of dimethyl ester of dicarboxylic such as dimethyl oxalate or di-methyl succinate or methyl ester of mono-carboxylic acid such as methyl pyruvate present as an impurity, so as to get highly pure S-(?)-methyl lactate followed by hydrolyzing highly pure S-(?)-methyl lactate using highly pure lactiType: GrantFiled: December 30, 2005Date of Patent: October 26, 2010Assignee: Council of Scientific & Industrial ResearchInventors: Prashant Purushottam Barve, Bhaskar Dattatreya Kulkarni, Sanjay Narayan Nene, Ravindra William Shinde, Milind Yashwant Gupte, Chandrashekhar Narayan Joshi, Gandhali Arun Thite, Vilas Bhiku Chavan, Tushar Ramchandra Deshpande
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Publication number: 20090203937Abstract: The present invention provides a commercially viable process for the preparation of highly pure and optically active L-(+)-lactic acid and S-(?)-methyl lactate, in high yield, obtained from esterification of aqueous crude lactic acid solution produced by sugar cane juice fermentation broth and methanol in continuous counter current trickle phase approach or in continuous counter current bubble column manner, using stabilizers and the methyl lactate so obtained is recovered and followed by purification of reasonably pure methyl lactate using reagent mixture such as sodium bi-carbonate, mono-ethanolamine or di-ethanolamine, urea or sodium-bicarbonate, mono-ethanolamine or di-ethanolamine, thiourea to reduce the impurity of dimethyl ester of dicarboxylic such as dimethyl oxalate or di-methyl succinate or methyl ester of mono-carboxylic acid such as methyl pyruvate present as an impurity, so as to get highly pure S-(?)-methyl lactate followed by hydrolyzing highly pure S-(?)-methyl lactate using highly pure lactiType: ApplicationFiled: December 30, 2005Publication date: August 13, 2009Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Prashant Purushottam Barve, Bhaskar Dattatreya Kulkarni, Sanjay Narayan Nene, Ravindra William Shinde, Milind Yashwant Gupte, Chandrashekhar Narayan Joshi, Gandhali Arun Thite, Vilas Bhiku Chavan, Tushar Ramchandra Deshpande
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Patent number: 6316615Abstract: The invention relates to a novel process for the recovery of potassium bitartrate and pectin, sugars, fruit acids as by-products from tamarind pulp.Type: GrantFiled: June 1, 1999Date of Patent: November 13, 2001Assignee: Council of Scientific & Industrial ResearchInventors: Mohan Gopalkrishna Kulkarni, Madhav Jagannath Thakar, Sudhir Sharadchandra Kulkarni, Sanjay Narayan Nene, Bhaskar Ganapatrao Gaikwad
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Patent number: 6280979Abstract: A microbial process for the preparation of D(-)-N-carbamoylphenylglycine from DL-5-phenylhydantoin which comprises culturing the strain pseudomonas sp. having Accession No. NCIM 5070 (ATCC 55940) and deposited in National Collection of Industrial Microorganisms (NCIM), National Chemical Laboratory (NCL) (India), having hydantoinase activity, in a medium for 16-20 hours, separating the cells by centrifugation, treating the solid cells obtained with DL-5-phenylhydantoin in buffer, at a temperature in the range of about 25-30° C. for a period of about 2-6 hours, acidifying the mixture to obtain solid D(-)-N-carbamoylphenylglycine, and separating the product by filtration.Type: GrantFiled: February 5, 1999Date of Patent: August 28, 2001Assignee: Council of Scientific & Industrial ResearchInventors: Digambar Vitthal Gokhale, Kulbhushan Balwant Bastawde, Shamrao Ganapatrao Patil, Uttam Ramrao Kalkote, Rohini Ramesh Joshi, Ramesh Anna Joshi, Thottapillil Ravindranathan, Vithal Venkatrao Jogdand, Bhaskar Ganapatrao Gaikwad, Sanjay Narayan Nene
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Patent number: 6087136Abstract: A microbial process for the preparation of D(-)-N-carbamoylphenylglycine from DL-5-phenylhydantoin which comprises culturing the strain pseudomonas sp. having Accession No. NCIM 5070 (ATCC 55940) and deposited in National Collection of Industrial microorganisms (NCIM), National Chemical laboratory (NCL) (India), having hydantoinase activity, in a medium for 16-20 hours, separating the cells by centrifugation, treating the solid cells obtained with DL-5-phenylhydantoin in buffer, at a temperature in the range of about 25-30.degree. C. for a period of about 2-6 hours, acidifying the mixture to obtain solid D(-)-N-carbamoylphenylglycine, and separating the product by filtration.Type: GrantFiled: March 31, 1997Date of Patent: July 11, 2000Assignee: Council of Scientific & Industrial ResearchInventors: Digambar Vitthal Gokhale, Kulbhushan Balwant Bastawde, Shamrao Ganapatrao Patil, Uttam Ramrao Kalkote, Rohini Ramesh Joshi, Ramesh Anna Joshi, Thottapillil Ravindranathan, Vithal Venkatrao Jogdand, Bhaskar Ganapatrao Gaikwad, Sanjay Narayan Nene
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Patent number: 5994533Abstract: The invention provides Potassium bitartrate, pectin, L(+) tartaric acid and fruit sugars present in tamarind pulp, which are recovered sequentially by extracting the pulp in water, concentrating and chilling the extract, filtering out potassium bitartrate, precipitating out pectin from the filtrate by addition of acetone, extracting L(+) tartaric acid selectively by complexation with tertiary amine and recovering from the amine layer by back extraction into aqueous layer in the presence of a diluent at around 70.degree. C. followed by concentration and drying of the aqueous layer and treating the raffinate layer from solvent extraction with activated carbon, anion exchange resin, and concentrating to yield sugar containing 70% sugars.Type: GrantFiled: August 11, 1997Date of Patent: November 30, 1999Assignee: Council of Scientific & Industrial ResearchInventors: Mohan Gopalkrishna Kulkarni, Sudhir Sharadchandra Kulkarni, Sanjay Narayan Nene, Madhav Jagannath Thakar, Bhaskar Ganapatrao Gaikwad