Patents by Inventor Dhiman Sarkar

Dhiman Sarkar 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: 10017583
    Abstract: Disclosed herein is an improved process for the preparation of nanostructured oxidized/carboxy cellulose with high carboxy content and high yield, by subjecting non-wood, lignocellulose, sugarcane bagasse derived a-cellulose or cotton cellulose to oxidation at suitable temperature, wherein the particle shape is spherical, particle size of synthesized carboxy cellulose is in the range of 1-100 nm and degree of polymerization (DP) is in the range 50-70 Further the present invention provides pharmaceutical composition comprising of nanostructured oxidized/carboxy celluloses preferably 6-carboxy cellulose, and 2,3,6-tricarboxycellulose alone or in association with one or more pharmaceutically acceptable carrier(s) or excipient(s) for treatment of microbial infections. The carboxycelluloses were efficient in stabilizing multi-walled carbon nanotubes and single-walled carbon nanotubes in aqueous media.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: July 10, 2018
    Assignee: Council of Scientific & Industrial Research
    Inventors: Anjanikumar Jyotiprasad Varma, Priyanka Radheyshyam Sharma, Dhiman Sarkar
  • Patent number: 9801918
    Abstract: The present invention describes the use of pharmaceutical compositions including compounds of formula 2 (below) for treatment of infections related to M. tuberculosis and for anti-proliferative activity.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: October 31, 2017
    Assignee: Council of Scientific & Industrial Research
    Inventors: Swati Pramod Joshi, Roshan Rajan Kulkarni, Ketaki Dilip Shurpali, Sampa Sarkar, Dhiman Sarkar
  • Patent number: 9670523
    Abstract: The present invention discloses functional nitrite reductase as a potential drug target for anti-tubercular drug development. The present invention also relates to the development of an easy method for identification of nitrite in clinical samples as well as its correlation with the severity of the disease. Presence of active as well as dormant/latent stages of Mycobacterium tuberculosis (MTB) could be identified from nitrite in clinical samples like sputum of potential TB patients.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: June 6, 2017
    Assignee: Council of Scientific and Industrial Research
    Inventor: Dhiman Sarkar
  • Patent number: 9663548
    Abstract: Disclosed herein is 10-?/?-D-Arabinofuranosylundecenes of general Formula (II) or pharmaceutically acceptable salts thereof as anti-mycobacterial agents in vitro; (II) wherein R, R1 and R? are as defined herein in the specification. The present invention also discloses a simple stereoselective synthesis 10-?/?-D-Arabinofuranosylundecenes of Formula (II) to target enzymes involved in the biosynthesis of cell wall of Mycobacterium and thus useful as inhibitors in the Mycobacterium tuberculosis drug development.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 30, 2017
    Assignee: Council of Scientific and Industrial Research
    Inventors: Ramana Venkata Chepuri, Dhiman Sarkar, Rahul Shivaji Patil, Sampa Sarkar
  • Patent number: 9527827
    Abstract: This invention relates to diterpenes of general formula (1) belonging to labdane class, isolated from Leucas stelligera, being useful for prevention, treatment, inhibition or controlling growth and proliferation of mycobacterial activity in mammals. The invention further discloses process for isolation of the fractions containing the same.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: December 27, 2016
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Swati Joshi, Roshan Rajan Kulkarni, Ketaki Dilip Shurpali, Sampa Sarkar, Dhiman Sarkar
  • Publication number: 20160271196
    Abstract: The present invention describes use of compounds of formula 1 or 2 or their compositions for the treatment of leukemia and use of compound of formula 1 or its composition for treatment of infections caused due to M. tuberculosis. The invention further discloses use of compound of formula 3 for the conversion of solar energy into electric current in dye sensitized solar cells.
    Type: Application
    Filed: May 31, 2016
    Publication date: September 22, 2016
    Inventors: Swati Pramod JOSHI, Roshan Rajan KULKARNI, Ketaki Dilip SHURPALI, Sampa SARKAR, Dhiman SARKAR
  • Patent number: 9376402
    Abstract: Triazole derivatives useful as anti-tubercular compounds; process for preparation of the triazoles and a method for inhibiting growth of Mycobacterium bovis BCG and Mycobacterium tuberculosis H37Ra using the triazoles.
    Type: Grant
    Filed: September 23, 2014
    Date of Patent: June 28, 2016
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Dhiman Sarkar, Sunita Ranjan Deshpande, Shailaja Pramod Maybhate, Anjali Prabhakar Likhite, Sampa Sarkar, Arshad Khan, Preeti Madhukar Chaudhary, Sayalee Ramchandra Chavan
  • Publication number: 20160130368
    Abstract: Disclosed herein is an improved process for the preparation of nanostructured oxidized/carboxy cellulose with high carboxy content and high yield, by subjecting non-wood, lignocellulose, sugarcane bagasse derived a-cellulose or cotton cellulose to oxidation at suitable temperature, wherein the particle shape is spherical, particle size of synthesized carboxy cellulose is in the range of 1-100 nm and degree of polymerization (DP) is in the range 50-70 Further the present invention provides pharmaceutical composition comprising of nanostructured oxidized/carboxy celluloses preferably 6-carboxy cellulose, and 2,3,6-tricarboxycellulose alone or in association with one or more pharmaceutically acceptable carrier(s) or excipient(s) for treatment of microbial infections. The carboxycelluloses were efficient in stabilizing multi-walled carbon nanotubes and single-walled carbon nanotubes in aqueous media.
    Type: Application
    Filed: June 3, 2014
    Publication date: May 12, 2016
    Inventors: Anjanikumar Jyoti-Prasad Varma, Priyanka Radheyshyam Sharma, Dhiman Sarkar
  • Publication number: 20150259372
    Abstract: Disclosed herein is 10-?/?-D-Arabinofuranosylundecenes of general Formula (II) or pharmaceutically acceptable N salts thereof as anti-mycobacterial agents in vitro; (II) wherein R, R1 and R? are as defined herein in the specification. The present invention also discloses a simple stereoselective synthesis 10-?/?-D-Arabinofuranosylundecenes of Formula (II) to target enzymes involved in the biosynthesis of cell wall of Mycobacterium and thus useful as inhibitors in the Mycobacterium tuberculosis drug development.
    Type: Application
    Filed: September 14, 2012
    Publication date: September 17, 2015
    Applicant: Council of Scientific & Industrial Research
    Inventors: Ramana Venkata Chepuri, Dhiman Sarkar, Rahul Shivaji Patil, Sampa Sarkar
  • Patent number: 9028893
    Abstract: Active fractions exhibiting anti-tuberculous activity from the plant Byttneria herbecea (family—Sterculiaceae) are described. Methanol extracts of the aerial part of Byttneria herbecea exhibited activity against MtbGS in primary screening of biosynthetic assay. Subsequent fractionation was carried out in organic solvents. Out of all these, two fractions (fraction D and K) are exhibiting inhibitory activity against M. tuberculosis glutamine synthetase activity. These fractions D and K are inhibiting 74% and 44% respectively at 7.5 mg/ml concentrations. The determined IC50 value of the fraction K is found to be 4.5 mg/ml from the dose response curve against the purified Mycobacterium tuberculosis Glutamine Synthetase. The IC50 value for M. bovis BCG is 1.56 ?g/ml. It was observed that there was no significant effect on proliferation of HL-60 cell line at 10×MIC levels of the hits. This data indicated that these compounds could be initially considered to be safe.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: May 12, 2015
    Assignee: Council of Scientific & Industrial Research
    Inventors: Dhiman Sarkar, Swati Pramod Joshi, Upasana Singh, Ketaki Dilip Shurpali, Roshan Rajan Kulkarni
  • Publication number: 20150118702
    Abstract: The present invention discloses functional nitrite reductase as a potential drug target for anti-tubercular drug development. The present invention also relates to the development of an easy method for identification of nitrite in clinical samples as well as its correlation with the severity of the disease. Presence of active as well as dormant/latent stages of Mycobacterium tuberculosis (MTB) could be identified from nitrite in clinical samples like sputum of potential TB patients.
    Type: Application
    Filed: November 3, 2014
    Publication date: April 30, 2015
    Inventor: Dhiman Sarkar
  • Publication number: 20150073026
    Abstract: Triazole derivatives useful as anti-tubercular compounds; process for preparation of the triazoles and a method for inhibiting growth of Mycobacterium bovis BCG and Mycobacterium tuberculosis H37Ra using the triazoles.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 12, 2015
    Inventors: Dhiman SARKAR, Sunita Ranjan DESHPANDE, Shailaja Pramod MAYBHATE, Anjali Prabhakar LIKHITE, Sampa SARKAR, Arshad KHAN, Preeti Madhukar CHAUDHARY, Sayalee Ramchandra CHAVAN
  • Publication number: 20150051277
    Abstract: The present invention describes use of compounds of formula 1 or 2 or their compositions for the treatment of leukemia and use of compound of formula 1 or its composition for treatment of infections caused due to M. tuberculosis. The invention further discloses use of compound of formula 3 for the conversion of solar energy into electric current in dye sensitized solar cells.
    Type: Application
    Filed: August 6, 2012
    Publication date: February 19, 2015
    Inventors: Swati Pramod Joshi, Roshan Rajan Kulkarni, Ketaki Dilip Shurpali, Sampa Sarkar, Dhiman Sarkar
  • Patent number: 8877452
    Abstract: The present invention discloses functional nitrite reductase as a potential drug target for anti-tubercular drug development. The present invention also relates to the development of an easy method for identification of nitrite in clinical samples as well as its correlation with the severity of the disease. Presence of active as well as dormant/latent stages of Mycobacterium tuberculosis (MTB) could be identified from nitrite in clinical samples like sputum of potential TB patients.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: November 4, 2014
    Assignee: Council of Scientific and Industrial Research
    Inventor: Dhiman Sarkar
  • Patent number: 8865910
    Abstract: Invention provides antitubercular compounds selected from propargylated 1,2,3 triazoles of Formula I, wherein, X is sulfur(S) or a sulphone (A), n, m represent independently an integer O or 1, with the provision that when ‘n’ is 1, ‘m’ is 1; R1 is hydrogen; C1-C6 linear or branched alkyl group optionally substituted with aryl group; halogen; or aryl group optionally substituted with —OCH3, halogen, and nitro; R2 and R3 are selected from the group consisting of hydrogen, C1-C6 alkyl optionally substituted with heterocyclic ring of 5 to 6 ring atoms containing one to three hetero atoms selected from oxygen, sulfur, nitrogen, which may be substituted with alkyl, arylalkyl, linear or branched alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, or allyl or propargyl groups consisting of 1 to 6 carbon atoms; Z is C1-C6 alkyl optionally substituted with heterocyclic ring of 1 to 6 ring atoms, containing one to three hetero atoms selected from oxygen, sulfur, nitrogen, which may be substituted with arylalkyl,
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: October 21, 2014
    Assignee: Council of Scientific & Industrial Research
    Inventors: Dhiman Sarkar, Sunita Ranjan Deshpande, Shailaja Pramod Maybhate, Anjali Prabhakar Likhite, Sampa Sarkar, Arshad Khan, Preeti Madhukar Chaudhary, Sayalee Ramchandra Chavan
  • Publication number: 20140242626
    Abstract: The present invention discloses functional nitrite reductase as a potential drug target for anti-tubercular drug development. The present invention also relates to the development of an easy method for identification of nitrite in clinical samples as well as its correlation with the severity of the disease. Presence of active as well as dormant/latent stages of Mycobacterium tuberculosis (MTB) could be identified from nitrite in clinical samples like sputum of potential TB patients.
    Type: Application
    Filed: February 27, 2013
    Publication date: August 28, 2014
    Inventor: Dhiman Sarkar
  • Publication number: 20140171498
    Abstract: This invention relates to diterpenes of general formula (1) belonging to labdane class, isolated from Leucas stelligera, being useful for prevention, treatment, inhibition or controlling growth and proliferation of mycobacterial activity in mammals. The invention further discloses process for isolation of the fractions containing the same.
    Type: Application
    Filed: August 6, 2012
    Publication date: June 19, 2014
    Applicant: Council of Scientific & Indusrtial Reasearch
    Inventors: Swati Joshi, Roshan Rajan Kulkarni, Ketaki Dilip Shurpali, Sampa Sarkar, Dhiman Sarkar
  • Publication number: 20130060045
    Abstract: Invention provides antitubercular compounds selected from propargylated 1,2,3 triazoles of Formula I, wherein, X is sulfur (S) or a sulphone (A), n, m represent independently an integer O or 1, with the provision that when ‘n’ is 1, ‘m’ is 1; R1 is hydrogen; C1-C6 linear or branched alkyl group optionally substituted with aryl group; halogen; or aryl group optionally substituted with —OCH3, halogen, and nitro; R2 and R3 are selected from the group consisting of hydrogen, C1-C6 alkyl optionally substituted with heterocyclic ring of 5 to 6 ring atoms containing one to three hetero atoms selected from oxygen, sulfur, nitrogen, which may be substituted with alkyl, arylalkyl, linear or branched alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, or allyl or propargyl groups consisting of 1 to 6 carbon atoms; Z is C1-C6 alkyl optionally substituted with heterocyclic ring of 1 to 6 ring atoms, containing one to three hetero atoms selected from oxygen, sulfur, nitrogen, which may be substituted with arylalkyl
    Type: Application
    Filed: March 14, 2011
    Publication date: March 7, 2013
    Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: Dhiman Sarkar, Sunita Ranjan Deshpande, Shailaja Pramod Maybhate, Anjali, Prabhakar Likhite, Sampa Sarkar, Arshad Khan, Preeti Madhukar Chaudhary, Sayalee Ramchandra Chavan