Patents by Inventor Surya Narayana Devarakonda

Surya Narayana Devarakonda 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).

  • PREPARATION OF LENALIDOMIDE
    Publication number: 20160194301
    Abstract: Processes for the preparation of substantially pure lenalidomide. The application also relates to an enriched, substantially pure, and pure amorphous form of lenalidomide and solid dispersions containing amorphous lenalidomide.
    Type: Application
    Filed: March 14, 2016
    Publication date: July 7, 2016
    Inventors: Surya Narayana DEVARAKONDA, Sesha Reddy YARRAGUNTLA, Vamsi Krishna MUDAPAKA, Rajasekhar KADABOINA, Veerender MURKI, Amarendhar MANDA, Venkata Rao BADISA, Naresh VEMULA, Rama Seshagiri Rao PULLA, Venu NALIVELA
  • SOLID FORMS OF PEMETREXED
    Publication number: 20140066463
    Abstract: There is provided polymorphs and amorphous form of pemetrexed or its pharmaceutical acceptable salts and process for making thereof.
    Type: Application
    Filed: April 5, 2013
    Publication date: March 6, 2014
    Applicants: DR. REDDY'S LABORATORIES, INC., DR. REDDY'S LABORATORIES LTD.
    Inventors: Raghavendracharyulu Venkata Palle, Sekhar Munaswamy Nariyam, Vijay Bhailalbhai Patel, Raghupati Rama Subrahmanyam Vinjamuri, Surya Narayana Devarakonda, Sesha Reddy Yarraguntla, Vamsi Krishna Mudapaka, Venu Nalivela
  • Solid forms of pemetrexed
    Patent number: 8507508
    Abstract: There is provided polymorphs and amorphous form of pemetrexed or its pharmaceutical acceptable salts and process for making thereof.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: August 13, 2013
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Raghavendracharyulu Venkata Palle, Sekhar Munaswamy Nariyam, Vijay Bhailalbhai Patel, Raghupati Rama Subrahmanyam Vinjamuri, Surya Narayana Devarakonda, Sesha Reddy Yarraguntla, Vamsi Krishna Mudapaka, Venu Nalivela
  • Process for preparing (2R,3S/2S,3R)-2-(2,4-difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol
    Patent number: 8039619
    Abstract: Voriconazole is prepared by a process comprising condensing 1-(2,4-difluorophenyl)-2-(1H-1,2,4-triazole-1-yl)ethanone with 4-chloro-6-ethyl-5-fluoropyrimidine, in a ketone, ether, aliphatic hydrocarbon, or aromatic hydrocarbon solvent, to give (2R,3S/2S,3R)-3-(4-chloro-5-fluoropyrimidin-6-yl)-2-(2,4-diflurophenyl)-1-(1H -1,2,4-triazole-1-yl)butan-2-ol.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: October 18, 2011
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Venkataraman Sundaram, Venkata Bhaskara Rao Uppala, Surya Prabhakar Akundi, Venkateswarlu Muvva, Vijayawardhan Chitta, Alekhya Donthula, Manoj Ramesh Kharkar, Surya Narayana Devarakonda, Subba Reddy Peddireddy
  • PREPARATION OF LENALIDOMIDE
    Publication number: 20110021567
    Abstract: Processes for the preparation of substantially pure lenalidomide. The application also relates to an enriched, substantially pure, and pure amorphous form of lenalidomide and solid dispersions containing amorphous lenalidomide.
    Type: Application
    Filed: March 11, 2009
    Publication date: January 27, 2011
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Surya Narayana Devarakonda, Sesha Reddy Yarraguntla, Vamsi Krishna Mudapaka, Rajasekhar Kadaboina, Veerender Murki, Amarendhar Manda, Venkata Rao Badisa, Naresh Vemula, Rama Seshagiri Rao Pulla, Venu Nalivela
  • PROCESS FOR PREPARING (2R,3S/2S,3R)-2-(2,4-DIFLUOROPHENYL)-3-(5-FLUOROPYRIMIDIN-4-YL)-1-(1H-1,2,4-TRIAZOL-1-YL)BUTAN-2-OL
    Publication number: 20100292473
    Abstract: Voriconazole is prepared by a process comprising condensing 1-(2,4-difluorophenyl)-2-(1H-1,2,4-triazole-1-yl)ethanone with 4-chloro-6-ethyl-5-fluoropyrimidine, in a ketone, ether, aliphatic hydrocarbon, or aromatic hydrocarbon solvent, to give (2R,3S/2S,3R)-3-(4-chloro-5-fluoropyrimidin-6-yl)-2-(2,4-diflurophenyl)-1-(1H-1,2,4-triazole-1-yl)butan-2-ol.
    Type: Application
    Filed: June 10, 2010
    Publication date: November 18, 2010
    Applicants: DR. REDDY'S LABORATORIES LIMITED, DR. REDDY'S LABORATORIES, INC.
    Inventors: Venkataraman Sundaram, Venkata Bhaskara Rao Uppala, Surya Prabhakar Akundi, Venkateswarlu Muvva, Vijayawardhan Chitta, Alekhya Donthula, Manoj Ramesh Kharkar, Surya Narayana Devarakonda, Subba Reddy Peddireddy
  • O-DESMETHYLVENLAFAXINE
    Publication number: 20100210719
    Abstract: Processes for preparing desvenlafaxine and stable amorphous O-desmethylvenlafaxine succinate solid dispersions with one or more pharmaceutically acceptable carriers.
    Type: Application
    Filed: July 10, 2008
    Publication date: August 19, 2010
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Surya Narayana Devarakonda, Sesha Reddy Yarraguntla, Venu Nalivela, Ram Thaimattam, Subbareddy Peddireddy, Balaji Raghupati, Mohammed Azeezulla Baig, Srinivas Reddy Gade, Srinivas Reddy Mallepalli, Vijaywardhan Chitta, Satyanarayana Bollikonda, Saravanan Mohanarangam, Rajasekhar Kadaboina
  • SOLIFENACIN COMPOSITIONS
    Publication number: 20100137358
    Abstract: Compositions and/or formulations comprising solifenacin or a salt thereof and processes for preparing the same. Certain compositions and formulations contain a stable amorphous form of solifenacin succinate.
    Type: Application
    Filed: April 11, 2008
    Publication date: June 3, 2010
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Pramod Kharwade, Movva Snehalatha, Atul Vishvanath Patil, Narayanan Badri Vishwanathan, Indu Bhushan, Venkata Nookaraju Sreedharala, Harshal Prabhakar Bhagwatwar, Surya Narayana Devarakonda, Ravi Kumar Komareddy, Azeezulla Baig Mohammed, Arjun Kumar Tummala, Jaydeepkumar Dahyabhai Lilakar, Srirami Reddy Kikkuru, Swarupa Dudipala
  • IBANDRONATE SODIUM POLYMORPHS
    Publication number: 20100125149
    Abstract: There are provided crystalline forms of Ibandronate sodium and process for preparing thereof.
    Type: Application
    Filed: April 18, 2008
    Publication date: May 20, 2010
    Applicants: Dr. Reddy's Laboratories Ltd., Dr. Reddy's Laboratories, Inc.
    Inventors: Surya Narayana Devarakonda, Ram Thaimattam, Balaji Raghupati, Minakshi Asnani, Satish Kumar Vasamsetti, Srinivasulu Rangineni, Vamsi Krishna Muppidi
  • IMATINIB MESYLATE
    Publication number: 20100087444
    Abstract: There is provided a solid dispersion of imatinib mesylate that includes imatinib mesylate and a pharmaceutically acceptable carrier, wherein said carrier is a cellulose derivative. Also provided is a process for making a solid dispersion and a process for making imatinib.
    Type: Application
    Filed: March 12, 2008
    Publication date: April 8, 2010
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Surya Narayana Devarakonda, Minakshi Asnani, Munaswamy Sekhar Nariyam, Arjun Kumar Tummala, SR., Vamsi Krishna Mudapaka, Srinivas Benda, Subba Reddy Peddireddy, Balaji Raghupati, Raghavendracharyulu Venkata Palle, Subrahmanyam Raghupati Rama Vinjamuri, Vijay Bhailalbhai Patel
  • AMORPHOUS VALGANCICLOVIR HYDROCHLORIDE
    Publication number: 20100081809
    Abstract: The present application relates to amorphous forms of valganciclovir salts such as the hydrochloride and processes for their preparation.
    Type: Application
    Filed: October 28, 2009
    Publication date: April 1, 2010
    Applicants: DR. REDDY'S LABORATORIES LIMITED, DR. REDDY'S LABORATORIES, INC.
    Inventors: Surya Narayana Devarakonda, Sesha Reddy Yerraguntla, Venu Nalivela, Arjun Kumar Tummala
  • SOLID FORMS OF PEMETREXED
    Publication number: 20100063072
    Abstract: Duplex coating schemes and associated methods of formation, including a siloxane-based soft coating and a plasma-based SiOxCy hard coating used in combination to improve the durability of polymeric substrates.
    Type: Application
    Filed: April 4, 2008
    Publication date: March 11, 2010
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Raghavendracharyulu Venkata Palle, Sekhar Munaswamy Nariyam, Vijay Bhailalbhai Patel, Raghupati Rama Subrahmanyam Vinjamuri, Surya Narayana Devarakonda, Sesha Reddy Yarraguntla, Vamsi Krishna Mudapaka, Venu Nalivela
  • AMORPHOUS VALGANCICLOVIR HYDROCHLORIDE
    Publication number: 20090062538
    Abstract: The present application relates to amorphous forms of valganciclovir salts such as the hydrochloride and processes for their preparation.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 5, 2009
    Inventors: Surya Narayana Devarakonda, Sesha Reddy Yerraguntla, Venu Nalivela, Arjun Kumar Tummala
  • ARIPIPRAZOLE CO-CRYSTALS
    Publication number: 20090054455
    Abstract: Co-crystals comprising aripiprazole and fumaric acid.
    Type: Application
    Filed: February 2, 2007
    Publication date: February 26, 2009
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Surya Narayana Devarakonda, Krishnamurthi Vyas, Sivakumar Reddy Bommareddy, Pratap Reddy Padi, Balaji Raghupathy
  • Process For Preparing Voriconazole
    Publication number: 20080194820
    Abstract: Voriconazole is prepared by a process comprising condensing 1-(2,4-difluorophenyl)-2-(1H-1,2,4-triazole-1-yl)ethanone with 4-chloro-6-ethyl-5-fluoropyrimidine, in a ketone, ether, aliphatic hydrocarbon, or aromatic hydrocarbon solvent, to give (2R, 3S/2S,3R)-3-(4-chloro-5-fluoropyrimidin-6-yl)-2-(2,4-diflurophenyl)-1-(1H-1,2,4-triazole-1-yl)butan-2-ol.
    Type: Application
    Filed: December 13, 2005
    Publication date: August 14, 2008
    Inventors: Venkataraman Sundaram, Venkata Bhaskara Rao Uppala, Surya Prabhakar Akundi, Venkateswarlu Muvva, Vijayawardhan Chitta, Alekhya Donthula, Manoj Ramesh Kharkar, Surya Narayana Devarakonda, Subba Reddy Peddireddy