Patents by Inventor Srinivasulu Rangineni

Srinivasulu Rangineni 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: 20220204514
    Abstract: The present invention relates to novel crystalline forms of butanedioic acid 7-cyclopentyl-N,N-dimethyl-2-{[5-(piperazin-1-yl) pyridin-2-yl]amino}-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide of formula-la and process for preparation thereof. The present invention also relates to a process for the preparation of 7-cyclopentyl-N,N-dimethyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}-7H-pyrrolo[2,3-d] pyrimidine-6-carboxamide. Further, the present application also relates to acid addition salts of 7-cyclopentyl-N,N-dimethyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}-7H-pyrrolo[2,3-d] pyrimidine-6-carboxamide and process for the preparation thereof.
    Type: Application
    Filed: April 29, 2020
    Publication date: June 30, 2022
    Applicant: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Satyanarayana REVU, Rajeshwar Reddy SAGYAM, Srinivasulu RANGINENI, Ravichandran SRINIVASAN, Venkata Narasayya SALADI, Naveen RAGAM
  • Publication number: 20220144768
    Abstract: The present application provides novel polymorphic forms of siponimod, their processes, their use in purification of other crystalline polymorphic forms of siponimod, and pharmaceutical compositions containing them. The present application specifically provides crystalline Form S, Form S1 and Form S2 of siponimod, their preparative methods, their use in purification of other crystalline forms of siponimod and pharmaceutical compositions thereof.
    Type: Application
    Filed: February 26, 2020
    Publication date: May 12, 2022
    Inventors: Srividya RAMAKRISHNAN, Vamsi Krishna MUDAPAKA, Satyanarayana THIRUNAHARI, Srinivasulu RANGINENI
  • Patent number: 11236050
    Abstract: The present invention relates to novel polymorphs of 4-[3-chloro-4-(N?-cyclopropyl ureido) phenoxy]-7-methoxyquinoline-6-carboxamide methanesulfonate represented by following structural formula-1a and process for preparation thereof. Further, the present invention relates to an improved process for the preparation of 4-[3-chloro-4-(N?-cyclopropylureido) phenoxy]-7-methoxyquinoline-6-carboxamide compound of formula-1 or its salts and its intermediates thereof.
    Type: Grant
    Filed: December 8, 2018
    Date of Patent: February 1, 2022
    Assignee: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan Srinivasan, Eswaraiah Sajja, Venkata Panakala Rao Gogulapati, Rajeshwar Reddy Sagyam, Pavan Kumar Reddy Bandla, Srinivasulu Rangineni
  • Patent number: 11149026
    Abstract: The present invention relates to solid state forms of 5-chloro-6-[(2-iminopyrrolidin-1-yl)methyl]pyrimidine-2,4-(1H,3H)-dione hydrochloride compound of formula-1a and their processes for the preparation thereof and an improved process for the preparation of 5-chloro-6-[(2-iminopyrrolidin-1-yl)methyl]pyrimidine-2,4-(1H,3H)-dione hydrochloride. The present inventors also provides an amorphous polymorph of the combination drug consisting of 2?-deoxy-5-(trifluoromethyl) uridine and 5-chloro-6-[(2-iminopyrrolidin-1-yl)methyl]pyrimidine-2,4-(1H,3H)-dione monohydrochloride and its process for the preparation.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: October 19, 2021
    Assignee: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan Srinivasan, Eswaraiah Sajja, Venkat Reddy Ghojala, Rajeshwar Reddy Sagyam, Srinivasulu Rangineni, Rajashekar Kommera, Markandeya Bekkam
  • Publication number: 20210188778
    Abstract: The present invention relates to novel polymorphs of 4-[3-chloro-4-(N?-cyclopropyl ureido) phenoxy]-7-methoxyquinoline-6-carboxamide methanesulfonate represented by following structural formula-1a and process for preparation thereof. Further, the present invention relates to an improved process for the preparation of 4-[3-chloro-4-(N?-cyclopropylureido) phenoxy]-7-methoxyquinoline-6-carboxamide compound of formula-1 or its salts and its intermediates thereof.
    Type: Application
    Filed: December 8, 2018
    Publication date: June 24, 2021
    Applicant: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Venkata Panakala Rao GOGULAPATI, Rajeshwar Reddy SAGYAM, Pavan Kumar Reddy BANDLA, Srinivasulu RANGINENI
  • Publication number: 20200306225
    Abstract: The present invention related to stable N-((1R,2R)-1-(2,3-dihydrobenzo[b][1,4] dioxin-6-yl) -1-hydroxy-3-(pyrrolidin-1-yl)propan-2-yl) octanamide (2R,3R)-2,3-dihydroxysuccinate premix of formula (Ia) and its process for preparation thereof.
    Type: Application
    Filed: October 26, 2018
    Publication date: October 1, 2020
    Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Venkat Redby GHOJALA, Rajeshwar Reddy SAGYAM, Venkat Reddy MALLEPALLY, Ravinder reddy KOPPERA, Adilakshmi SINGAVARAPU, Srinivasulu RANGINENI
  • Publication number: 20200283413
    Abstract: The present invention relates to solid state forms of 5-chloro-6-[(2-iminopyrrolidin-1-yl)methyl]pyrimidine-2,4-(1H,3H)-dione hydrochloride compound of formula-1a and their processes for the preparation thereof and an improved process for the preparation of 5-chloro-6-[(2-iminopyrrolidin-1-yl)methyl]pyrimidine-2,4-(1H,3H)-dione hydrochloride. The present inventors also provides an amorphous polymorph of the combination drug consisting of 2?-deoxy-5-(trifluoromethyl) uridine and 5-chloro-6-[(2-iminopyrrolidin-1-yl)methyl]pyrimidine-2,4-(1H,3H)-dione monohydrochloride and its process for the preparation.
    Type: Application
    Filed: September 7, 2018
    Publication date: September 10, 2020
    Applicant: MSN LABORATORIES PRIVATE LIMITED, R&D CENTER
    Inventors: Thirumalai Rajan SRINIVASAN, Eswaraiah SAJJA, Venkat Reddy GHOJALA, Rajeshwar Reddy SAGYAM, Srinivasulu RANGINENI, Rajashekar KOMMERA, Markandeya BEKKAM
  • Patent number: 9216943
    Abstract: The present application provide processes for the preparation of fingolimod and its pharmaceutically acceptable salts, process for the purification of fingolimod hydrochloride and process for the preparation of amorphous fingolimod hydrochloride.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: December 22, 2015
    Assignee: DR. REDDY'S LABORATORIES LTD.
    Inventors: Srinivas Katkam, Rajeswar Reddy Sagyam, Raghavendar Rao Morthala, Babu Ireni, Krishna Vinigari, Suresh Kumar Ramdoss, Srinivasulu Rangineni, Arjunkumar Tummala, Javed Iqbal, Srinivas Oruganti, Bhaskar Kandagatla
  • Publication number: 20140235895
    Abstract: The present application provide processes for the preparation of fingolimod and its pharmaceutically acceptable salts, process for the purification of fingolimod hydrochloride and process for the preparation of amorphous fingolimod hydrochloride.
    Type: Application
    Filed: April 27, 2012
    Publication date: August 21, 2014
    Applicant: DR. REDDY'S LABORATORIES LTD.
    Inventors: Srinivas Katkam, Rajeswar Reddy Sagyam, Raghavendar Rao Morthala, Babu Ireni, Krishna Vinigari, Suresh Kumar Ramdoss, Srinivasulu Rangineni, Arjunkumar Tummala, Javed Iqbal, Srinivas Oruganti, Bhaskar Kandagatla
  • Publication number: 20140187538
    Abstract: The present invention relates to amorphous lorcaserin hydrochloride; amorphous solid dispersion comprising lorcaserin hydrochloride and one or more pharmaceutically acceptable carries; processes for preparation thereof; pharmaceutical compositions comprising amorphous lorcaserin hydrochloride and one or more pharmaceutically acceptable carries.
    Type: Application
    Filed: December 26, 2013
    Publication date: July 3, 2014
    Applicant: DR. REDDY'S LABORATORIES LTD.
    Inventors: Rajesham Boge, Arjun Kumar Tummala, Vishweshwar Peddy, Srinivasulu Rangineni, Vilas Hareshwar Dahanukar, Bandichhor Rakeshwar, Areveli Srinivas, Macharla Prabhakar, Varanasi Ganesh
  • Publication number: 20130172563
    Abstract: The present application relates to lenalidomide salts and solvates, and processes for the preparation thereof.
    Type: Application
    Filed: August 10, 2012
    Publication date: July 4, 2013
    Applicants: Dr. Reddy's Laboratories, Inc., Dr. Reddy's Laboratories Ltd.
    Inventors: Srinivasulu Rangineni, Nagakiran Duggirala, Vamsi Krishna Mudapaka, Rajasekhar Kadaboina, Veerender Murki, Amarendhar Manda, Venkata Rao Badisa, Naresh Vemula, Rama Seshagiri Rao Pulla
  • Publication number: 20110237802
    Abstract: The present application relates to lenalidomide salts and solvates, and processes for the preparation thereof.
    Type: Application
    Filed: May 17, 2011
    Publication date: September 29, 2011
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Srinivasulu Rangineni, Nagakiran Duggirala, Vamsi Krishna Mudapaka, Rajasekhar Kadaboina, Veerender Murki, Amarendhar Manda, Venkata Rao Badisa, Naresh Vemula, Rama Seshagiri Rao Pulla
  • Publication number: 20110218360
    Abstract: The present invention relates to processes for the preparation of rasagiline mesylate. Also provided is rasagiline mesylate having 90 volume percent of the particles (D90) with sizes less than about 6 ?m and processes for the preparation thereof.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 8, 2011
    Applicants: DR. REDDY'S LABORATORIES LTD., DR. REDDY'S LABORATORIES, INC.
    Inventors: Praveen Cherukupally, Venkata Reddy Vajrala, Vijaya Kumar Adla, Srinivasulu Rangineni, Sundaralakshmi Kanniah
  • Publication number: 20110213159
    Abstract: Celecoxib crystalline Form Ill substantially free of celecoxib crystalline Forms I and II and a process for its preparation.
    Type: Application
    Filed: February 28, 2011
    Publication date: September 1, 2011
    Inventors: Vamsee Krishna Muppidi, Srinivasulu Rangineni, Naga Kiran Duggirala, Srividya Ramakrishnan, Arjun Kumar Tummala
  • 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
  • Publication number: 20070197467
    Abstract: Intimate dispersions comprising zafirlukast and hydroxypropyl cellulose.
    Type: Application
    Filed: February 6, 2007
    Publication date: August 23, 2007
    Inventors: Srinivasulu Rangineni, Harshal Bhagwatwar, Surya Devarakonda, Sudeep Agarwal
  • Publication number: 20070098788
    Abstract: Pharmaceutical compositions comprising non-benzodiazepine hypnotic drugs or their pharmaceutically acceptable salts, solvates, enantiomers or mixtures and processes for preparing the same. The invention also includes immediate release and extended release pharmaceutical compositions comprising non-benzodiazepine hypnotic drugs, useful for sleep induction and sleep maintenance.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 3, 2007
    Inventors: Subhash Gore, Sudeep Agrawal, Abhijeet Upadhye, Srinivasulu Rangineni, Sivakumar Bommareddy, Srinivas Gade, Basappa Nagaraj, Gautam Bakshi, Surjit Das, Satish Jain, Surya Devarakonda, Bharath Deevireddy, Eswaraiah Sajja, Venkata Naga Kali Veturi, Sreenadhacharyulu Kandala, Gurvinder Singh, Indu Bhushan, Mailatur Mohan