Patents by Inventor Kiran Kumar Kothakonda

Kiran Kumar Kothakonda 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: 9382272
    Abstract: There is provided processes for preparing Lubiprostone and intermediates thereof. Also provided are compounds, including intermediates for preparing Lubiprostone as well compositions comprising Lubiprostone and other compounds, including intermediates for preparing Lubiprostone and other compounds.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: July 5, 2016
    Assignee: Apotex Pharmachem Inc.
    Inventors: Kiran Kumar Kothakonda, Fan Wang, Bhaskar Reddy Guntoori, Minh T. N. Nguyen, Alfredo Paul Ceccarelli, Yajun Zhao, Uma Kotipalli, Sammy Chris Duncan, Kaarina K. Milnes, Kevin Wade Kells, Laura Kaye Montemayor
  • Patent number: 9079921
    Abstract: The present disclosure discloses processes of Everolimus and intermediates: reacting Sirolimus (Rapamycin) under solvent free conditions with appropriate side chain implying portion wise additions, one pot conversion, and resin mediated synthesis.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: July 14, 2015
    Assignee: Biocon Limited
    Inventors: Srinivas Pullela Venkata, Ganesh Ekambaram, Kiran Kumar Kothakonda, Anegondi Sreenivasa Prasad
  • Patent number: 8883795
    Abstract: Provided for in the instant application are two additional polymorphic forms of rifaximin; namely substantially pure APO-I and APO-II. Also provided are processes for preparing substantially pure APO-I and APO-II. Rifaximin is a non-aminoglycoside antibiotic that has previously been found to be useful for the treatment of traveller's diarrhea caused by Escherichia coli bacteria, as well as in the treatment of irritable bowel syndrome, diverticular disease, hepatic encephalopathy, pyogenic skin infections and as an antibacterial prophylactic prior to colon surgery.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: November 11, 2014
    Assignee: Apotex Pharmachem Inc.
    Inventors: Kiran Kumar Kothakonda, Allan W. Rey
  • Publication number: 20140275535
    Abstract: The present invention relates to the stable acid addition salts of Bosentan that are useful for the purification of Bosentan base. In particular, the Bosentan acid addition salt is selected from Bosentan citrate and Bosentan tartrate.
    Type: Application
    Filed: December 1, 2011
    Publication date: September 18, 2014
    Applicant: Biocon Limited
    Inventors: Srinivas Pullela Venkata, Kiran Kumar Kothakonda, Shanmughasamy Rajmahendra, Indrajit Chandrasekaran, Mariappan Kaliappan, Rekha Shivappa Mailar
  • Patent number: 8785663
    Abstract: There is provided a crystalline form of Lubiprostone, termed APO-II and methods for making APO-II. APO-II is a polymorphic form of Lubiprostone.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: July 22, 2014
    Inventors: Alfredo Paul Ceccarelli, Kiran Kumar Kothakonda
  • Publication number: 20140005355
    Abstract: The present invention discloses a process for the preparation of Caspofungin and its intermediates from Pneumocandin B0.
    Type: Application
    Filed: February 18, 2011
    Publication date: January 2, 2014
    Applicant: BIOCON LIMITED
    Inventors: Kiran Kumar Kothakonda, Sandeep Rao Sripathi, Srinivas Pullela Venkata, Lijo George, Anegondi Sreenivasa Prasad
  • Publication number: 20130225823
    Abstract: The present disclosure discloses processes of Everolimus and intermediates: reacting Sirolimus (Rapamycin) under solvent free conditions with appropriate side chain implying portion wise additions, one pot conversion, and resin mediated synthesis.
    Type: Application
    Filed: November 17, 2011
    Publication date: August 29, 2013
    Inventors: Srinivas Pullela Venkata, Ganesh Ekambaram, Kiran Kumar Kothakonda, Anegondi Sreenivasa Prasad
  • Publication number: 20130096325
    Abstract: There is provided a crystalline form of Lubiprostone, termed APO-II and methods for making APO-II. APO-II is a polymorphic form of Lubiprostone.
    Type: Application
    Filed: January 28, 2011
    Publication date: April 18, 2013
    Applicant: APOTEX PHARMACHEM INC.
    Inventors: Alfredo Paul Ceccarelli, Kiran Kumar Kothakonda
  • Publication number: 20130090348
    Abstract: Provided for in the instant application are two additional polymorphic forms of rifaximin; namely substantially pure APO-I and APO-II. Also provided are processes for preparing substantially pure APO-I and APO-II. Rifaximin is a non-aminoglycoside antibiotic that has previously been found to be useful for the treatment of traveller's diarrhea caused by Escherichia coli bacteria, as well as in the treatment of irritable bowel syndrome, diverticular disease, hepatic encephalopathy, pyogenic skin infections and as an antibacterial prophylactic prior to colon surgery.
    Type: Application
    Filed: June 16, 2011
    Publication date: April 11, 2013
    Applicant: APOTEX PHARMACHEM INC.
    Inventors: Kiran Kumar Kothakonda, Allan W. Rey
  • Publication number: 20120309990
    Abstract: There is provided processes for purification of Lubiprostone by formation of amine salts. Also provided are compounds of the Lubiprostone amine salt. Also provided are compositions comprising Lubiprostone and amines.
    Type: Application
    Filed: December 17, 2010
    Publication date: December 6, 2012
    Applicant: APOTEX PHARMACHEM INC.
    Inventors: Gamini Weeratunga, Kiran Kumar Kothakonda, Alfredo Paul Ceccarelli, Bhaskar Reddy Guntoori, Fan Wang
  • Publication number: 20120065409
    Abstract: There is provided processes for preparing Lubiprostone and intermediates thereof. Also provided are compounds, including intermediates for preparing Lubiprostone as well compositions comprising Lubiprostone and other compounds, including intermediates for preparing Lubiprostone and other compounds.
    Type: Application
    Filed: January 22, 2010
    Publication date: March 15, 2012
    Applicant: APOTEX PHARMACHEM INC.
    Inventors: Kiran Kumar Kothakonda, Fan Wang, Bhaskar Reddy Guntoori, Minh T. N. Nguyen, Alfredo Paul Ceccarelli, Yajun Zhao, Uma Kotipalli, Sammy Chris Duncan, Kaarina K. Milnes, Kevin Wade Kells, Laura Kaye Montemayor
  • Publication number: 20110040120
    Abstract: Novel processes for the preparation of the anti-viral agent, Oseltamivir Phosphate and novel intermediates prepared in such processes. The novel processes use as starting materials D-glucose or D-xylose in the preparation of Oseltamivir Phosphate.
    Type: Application
    Filed: October 21, 2010
    Publication date: February 17, 2011
    Applicant: APOTEX PHARMACHEM INC.
    Inventors: Bruno Konrad RADATUS, K.S. Keshava MURTHY, Gamini WEERATUNGA, Stephen E. HORNE, Kiran Kumar KOTHAKONDA, Eckardt C.G. WOLF, Zhongyi WANG
  • Patent number: 7863442
    Abstract: There is provided a process for the preparation of olanzapine comprising: i) reacting 4-amino-2-methyl-10H-thieno-[2,3-b][1,5]benzodiazepine and N-methylpiperazine in a C1 to C4 alcoholic solvent or mixture thereof at suitable temperature and for a suitable time, ii) cooling the reaction mixture, and iii) isolating the precipitated olanzapine.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 4, 2011
    Assignee: Apotex Pharmachem Inc.
    Inventors: Kiran Kumar Kothakonda, Daqing Che, Bhaskar Reddy Guntoori
  • Patent number: 7709634
    Abstract: A stable amorphous form of rifaximin is disclosed. This form is chemically and polymorphically stable on storage and can be prepared by dissolving rifaximin in a solvent to form a solution, which is precipitated by adding an anti-solvent and isolating of the precipitated amorphous rifaximin as an end product.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: May 4, 2010
    Assignee: Apotex PharmAchem Inc.
    Inventors: Kiran Kumar Kothakonda, Daqing Che
  • Publication number: 20090082558
    Abstract: A stable amorphous form of rifaximin is disclosed. This form is chemically and polymorphically stable on storage and can be prepared by dissolving rifaximin in a solvent to form a solution, which is precipitated by adding an anti-solvent and isolating of the precipitated amorphous rifaximin as an end product.
    Type: Application
    Filed: September 20, 2007
    Publication date: March 26, 2009
    Inventors: Kiran Kumar Kothakonda, Daqing Che
  • Publication number: 20080319189
    Abstract: There is provided a process for the preparation of olanzapine comprising: i) reacting 4-amino-2-methyl-10H-thieno-[2,3-b][1,5]benzodiazepine and N-methylpiperazine in a C1 to C4 alcoholic solvent or mixture thereof at suitable temperature and for a suitable time, ii) cooling the reaction mixture, and iii) isolating the precipitated olanzapine.
    Type: Application
    Filed: October 30, 2007
    Publication date: December 25, 2008
    Inventors: Kiran Kumar Kothakonda, Daqing Che, Bhaskar Reddy Guntoori
  • Publication number: 20080312433
    Abstract: A process for obtaining crystalline Form-I olanzapine comprising the following: a) dissolving crude olanzapine in a solvent to form a solution, b) optionally drying by azeotropic distillation to remove water, c) precipitating by adding the solution of step (a) to an antisolvent, and d) isolating the precipitated crystalline Form-I olanzapine by filtration and drying at ambient temperature.
    Type: Application
    Filed: October 30, 2007
    Publication date: December 18, 2008
    Inventors: Daqing Che, Kiran Kumar Kothakonda, Cameron L. McPhail, Bhaskar Reddy Guntoori
  • Publication number: 20080009639
    Abstract: Novel processes for the preparation of the anti-viral agent, Oseltamivir Phosphate and novel intermediates prepared in such processes. The novel processes use as starting materials D-glucose or D-xylose in the preparation of Oseltamivir Phosphate.
    Type: Application
    Filed: February 23, 2007
    Publication date: January 10, 2008
    Inventors: Bruno Konrad Radatus, K.S. Keshava Murthy, Gamini Weeratunga, Stephen E. Horne, Kiran Kumar Kothakonda, Eckardt C.G. Wolf, Zhongyi Wang