Patents by Inventor Ravi Ponnaiah

Ravi Ponnaiah 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).

  • Publication number: 20210139508
    Abstract: The invention provides synthetic intermediates and synthetic processes that are useful for preparing the antibacterial agent TXA709:
    Type: Application
    Filed: August 19, 2020
    Publication date: May 13, 2021
    Applicant: TAXIS PHARMACEUTICALS, INC.
    Inventors: Sanjeevani Ghone, Fu-An Kang, Nareshkumar Jain, Ajit K. Parhi, Ravi Ponnaiah, Anil Kumar Soni, Siva Rami Reddy Athunuri, Thrisulapani Korrakuti, Pullarao Seelam
  • Patent number: 10774093
    Abstract: The invention provides synthetic intermediates and synthetic processes that are useful for preparing the antibacterial agent TXA709:
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: September 15, 2020
    Assignee: Taxis Pharmaceuticals, Inc.
    Inventors: Sanjeevani Ghone, Fu-An Kang, Nareshkumar Jain, Ajit S. Parhi, Ravi Ponnaiah, Anil Kumar Soni, Siva Rami Reddy Athunuri, Thrisulapani Korrakuti, Pullarao Seelam
  • Patent number: 10774041
    Abstract: The present invention relates to an improved process for the preparation of Apremilast of formula (I).
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: September 15, 2020
    Inventors: Ravi Ponnaiah, Praveen Kumar Neela, Madanlal Anandkumar Lahoti, Srinivas Pardha Gavini Saradhi
  • Publication number: 20200055870
    Abstract: The invention provides synthetic intermediates and synthetic processes that are useful for preparing the antibacterial agent TXA709:
    Type: Application
    Filed: March 30, 2018
    Publication date: February 20, 2020
    Applicant: TAXIS PHARMACEUTICALS, INC.
    Inventors: Sanjeevani Ghone, Fu-An Kang, Nareshkumar Jain, Ajit S. Parhi, Ravi Ponnaiah, Anil Kumar Soni, Siva Rami Reddy Athunuri, Thrisulapani Korrakuti, Pullarao Seelam
  • Patent number: 10513528
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare a compound of formula (I): or a salt thereof.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: December 24, 2019
    Assignee: Taxis Pharmaceuticals, Inc.
    Inventors: Ravi Ponnaiah, Sudhakar Sunkari, Anil Kumar Soni, Savi Rami Reddy Athunuri, Thrisulapani Korrakuti, Pullarao Seelam, Ajit K. Parhi
  • Publication number: 20190071401
    Abstract: The present invention relates to an improved process for the preparation of Apremilast of formula (I).
    Type: Application
    Filed: January 27, 2017
    Publication date: March 7, 2019
    Inventors: Ravi PONNAIAH, Praveen Kumar NEELA, Madanlal Anandkumar LAHOTI, Srinivas Pardha Gavini SARADHI
  • Publication number: 20190048024
    Abstract: The invention provides synthetic processes and synthetic intermediates that can be used to prepare a compound of formula (I): or a salt thereof.
    Type: Application
    Filed: February 23, 2017
    Publication date: February 14, 2019
    Applicant: TAXIS PHARMACEUTICALS, INC.
    Inventors: Ravi Ponnaiah, Sudhakar Sunkari, Anil Kumar Soni, Savi Rami Reddy Athunuri, Thrisulapani Korrakuti, Pullarao Seelam, Ajit S. Parhi
  • Patent number: 9199916
    Abstract: The invention is a novel process for the preparation of lacosamide by employing novel intermediates of formula III and IV:
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: December 1, 2015
    Assignee: RAMAMOHAN RAO DAVULURI
    Inventors: Ramamohan Rao Davuluri, Guruswamy Batthini, Swetha Mustyala, Sudheer Kallepalli, Praveen Kumar Neela, Ravi Ponnaiah
  • Patent number: 9120876
    Abstract: A novel process for the preparation of 6-perdeoxy-6-per-halo Gamma cyclodextrin which is a useful intermediate in the synthesis of Sugammadex is disclosed in the invention. The process involves reacting Gamma cyclodextrin with phosphorous halide in the presence of organic solvent.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: September 1, 2015
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Ravi Kanth Sribhashyam, Nandkumar Mecherili Valsan, Naresh Dongari, Prasad Chlnv, Guruswamy Batthini
  • Patent number: 8940749
    Abstract: An improved process for the synthesis of 3-[2-[4-((6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]-pyrimidin-4-one (Paliperidone) and Paliperidone Palmitate through a novel intermediate (2-Chloroethyl)-6,7,8,9-tetrahydro-2-methyl-9-hydroxy-4H-pyrido [1,2-a]pyrimidine-4-one Palmitate ester.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: January 27, 2015
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Praveen Kumar Neela, Guruswamy Batthini, Telagareddy Venkata Narasimharao, Kosireddy Ravanababu, Kallepally Sudheer
  • Patent number: 8907083
    Abstract: The invention provides a novel process for the synthesis of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one, the process comprising of reacting the salicylic acid with salicylamide in the presence of p-toluenesulfonyl chloride, base and solvent. The use of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one in the preparation of Deferasirox is also disclosed in the invention.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: December 9, 2014
    Assignee: Ramamohan Rao Davuluri
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Guruswamy Batthni, Chandra Murthy V. R. Medida, Santhosh Dummu
  • Patent number: 8871945
    Abstract: The invention relates to a novel, industrially viable, cost effective process for the preparation of 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxamide commonly known as Rufinamide and intermediates thereof.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: October 28, 2014
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Sanjay Kumar Dehury, Selvaraju K., Deepthi VPSS, Dhanunjaya Naidu
  • Publication number: 20140221641
    Abstract: A novel process for the preparation of 6-perdeoxy-6-per-halo Gamma cyclodextrin which is a useful intermediate in the synthesis of Suggamadex is disclosed in the invention. The process involves by reacting Gamma cyclodextrin with phosphorous halide in presence of organic solvent.
    Type: Application
    Filed: August 23, 2011
    Publication date: August 7, 2014
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Ravi Kanth Sribhashyam, Nandkumar Mecherili Valsan, Naresh Dongari, Prasad Chlnv, Guruswamy Batthini
  • Publication number: 20140073787
    Abstract: An improved process for the synthesis of 3-[2-[4-((6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]-pyrimidin-4-one (Paliperidone) and Paliperidone Palmitate through a novel intermediate (2-Chloroethyl)-6,7,8,9-tetrahydro-2-methyl-9-hydroxy-4H-pyrido [1,2-a]pyrimidine-4-one Palmitate ester.
    Type: Application
    Filed: May 30, 2012
    Publication date: March 13, 2014
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Praveen Kumar Neela, Guruswamy Batthini, Telagareddy Venkata Narasimharao, Kosireddy Ravanababu, Kallepally Sudheer
  • Publication number: 20130338356
    Abstract: The invention provides a novel process for the synthesis of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one, the process comprising of reacting the salicylic acid with salicylamide in the presence of p-toluenesulfonyl chloride, base and solvent. The use of 2-(2-hydroxyphenyl)-benz[1,3]oxazin-4-one in the preparation of Deferasirox is also disclosed in the invention.
    Type: Application
    Filed: August 23, 2011
    Publication date: December 19, 2013
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Guruswamy Batthni, Chandra Murthy V. R. Medida, Santhosh Dummu
  • Publication number: 20130184469
    Abstract: The invention relates to a novel, industrially viable, cost effective process for the preparation of 1-(2,6-difluorobenzyl)-1H-1,2,3-triazole-4-carboxamide commonly known as Rufinamide and intermediates thereof.
    Type: Application
    Filed: August 23, 2011
    Publication date: July 18, 2013
    Inventors: Ramamohan Rao Davuluri, Ravi Ponnaiah, Sanjay Kumar Dehury, Selvaraju K., Deepthi VPSS, Dhanunjaya Naidu
  • Publication number: 20130137864
    Abstract: The present invention provides an improved process for the preparation of Linezolid of formula (D. The present invention relates to preparation of intermediate (R)—N-[[3-[3-fluoro-4-morpholinyl]phenyl|-2-oxo-5-oxazolidinyl]methanol of formula (II), Linezolid amine of formula (Ia) and their use in the preparation of Linezolid. The present invention further provides process for the preparation of Form I of Linezolid of formula (I).
    Type: Application
    Filed: December 9, 2010
    Publication date: May 30, 2013
    Inventors: Jayaraman Venkat Raman, Dhiraj Rathod, Irfan Vohra, Mangesh Chavan, Manoj Ahirrao, Ravi Ponnaiah
  • Publication number: 20120171490
    Abstract: The present invention provides a new polymorph Form I of Teriflunomide sodium and a process for preparation thereof. The present invention provides an amorphous form of Teriflunomide sodium and a process for preparation thereof. The present invention provides a new polymorph Form I of Teriflunomide potassium and a process for preparation thereof. The present invention provides an amorphous form of Teriflunomide potassium and a process for preparation thereof. The present invention also provides particle size of Teriflunomide and its salts.
    Type: Application
    Filed: June 22, 2010
    Publication date: July 5, 2012
    Applicant: ALEMBIC PHARMACEUTICALS LIMITED
    Inventors: Ravi Ponnaiah, Samir Patel, Snehal Dhol, Vishal Ray
  • Publication number: 20120095239
    Abstract: The present invention relates to a process for the preparation of Duloxetine hydrochloride of formula (I).
    Type: Application
    Filed: March 5, 2010
    Publication date: April 19, 2012
    Applicant: ALEMBIC PHARMACEUTICALS LIMITED
    Inventors: Ravi Ponnaiah, Ashok Prasad, Killol Patel, Hitarth Harshendu Acharya
  • Publication number: 20110306796
    Abstract: The present invention relates to an improved process for the preparation of 1-bromo-3,5-dimethyl adamantane of formula (III), which is an useful intermediate for synthesis of 1-amino-3,5-dimethyl adamantane of formula (I) or pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: November 30, 2009
    Publication date: December 15, 2011
    Applicant: ALEMBIC LIMITED
    Inventors: Ravi Ponnaiah, Ashok Prasad, Piyush Maheshbhai Rana, Kamlesh Shankarlal Kanzariya, Mitulkumar Bharatkumar Dolia