Patents by Inventor Syam Kumar Unniaran

Syam Kumar Unniaran 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).

  • PROCESS FOR PREPARATION OF APREMILAST AND ITS INTERMEDIATES
    Publication number: 20180334429
    Abstract: Present application relates to the process for the preparation of 1-(3-Ethoxy-4-methoxy-phenyl)-2-methanesulf-onyl-ethylamine of the formula (II), its resolution and its use in preparation of Apremilast of formula (I), process for the preparation of crystalline form B of apremilast, process for preparation of amorphous form of apremilast and the crystalline form of (S)-1-(3-Eth-oxy-4-methoxy-phenyl)-2-methanesulfonyl-ethylamine of the formula (Va).
    Type: Application
    Filed: June 8, 2016
    Publication date: November 22, 2018
    Inventors: Sree Naga Venkata Lakshmi Vara Prasad VAKAMUDI, Syam Kumar Unniaran KUNHIMON, Soma Rani SARKAR, Babu IRENI, Amarnath Reddy LEKKALA, Gangadhara Chary RAPAKA, Srinivasa Rao MADARAPU, Ramesh Kumar NADGOUD, Sridhar CHAGANTI, Venkateswarlu MUVVA, Anna FRYSZKOWSKA, Martin FOX, Tamara Fanjul SOLARES, Vijay Kumar SHANGAPU, Nilesh HASTAK, Sunitha VYALA, Srininvasulu RANGINENI
  • CRYSTALLINE FORMS OF VILAZODONE HYDROCHLORIDE AND VILAZODONE FREE BASE
    Publication number: 20170217939
    Abstract: The present application relates to crystalline and amorphous Vilazodone hydrochloride. The present application further relates to amorphous solid dispersions of vilazodone hydrochloride with pharmaceutically acceptable carriers. The present application also relates to a process for the preparation of form I of vilazodone free base.
    Type: Application
    Filed: April 13, 2017
    Publication date: August 3, 2017
    Inventors: Javed IQBAL, Srinivas ORUGANTI, Rajesh Kumar RAPOLU, Vishweshwar PEDDY, Rajesham BOGE, Deepika PATHIVADA, Dharma Jagannadha Rao VELAGA, Sesha Reddy YARRAGUNTLA, Sudhakar Reddy BADDAM, Anitha NAREDLA, Kiran Kumar DONIPARTHI, Ramesh Kumar NADGOUD, Narasimha Rao PAGADALA, Syam Kumar UNNIARAN, Srividya RAMAKRISHNAN
  • Crystalline forms of pemetrexed tromethamine salts
    Patent number: 9688682
    Abstract: The present invention is directed to novel crystalline forms of pemetrexed tromethamine salts and processes for preparation thereof.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: June 27, 2017
    Assignee: DR. REDDY'S LABORATORIES LIMITED
    Inventors: Ramesh Kumar Nadgoud, Sridhar Vasam, Siva Reddy Makireddy, Goverdhan Gilla, Syam Kumar Unniaran Kunhimon, Sachin Sharma, Kumara Swamy Dornala
  • NOVEL CRYSTALLINE FORMS OF PEMETREXED TROMETHAMINE SALTS
    Publication number: 20160168153
    Abstract: The present invention is directed to novel crystalline forms of pemetrexed tromethamine salts and processes for preparation thereof.
    Type: Application
    Filed: July 15, 2014
    Publication date: June 16, 2016
    Inventors: Ramesh NADGOUD, Sridhar VASAM, Siva Reddy MAKIREDDY, Goverdhan GILLA, Syam Kumar Unniaran KUNHIMON, Sachin Sharma, Kumara Swamy DORNALA
  • Process for producing (S)-equol
    Patent number: 9051291
    Abstract: The present application relates to an improved process for the preparation of (S)-equol (1). The present application also relates to novel intermediates of formula (7), (7A), (8) and (9) and their use for the synthesis of (S)-equol.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: June 9, 2015
    Assignee: DR. REDDY'S LABORATORIES LIMITED
    Inventors: Vilas Hareshwar Dahanukar, Syam Kumar Unniaran Kunhimon, Upadhya Timmana, Abir Kumar Pal, Mahendar Macha, Venkata Madhubabu Meesala, Krishna Mohan Thalabathula, Shankar Ramanathan
  • CRYSTALLINE FORMS OF VILAZODONE HYDROCHLORIDE AND VILAZODONE FREE BASE
    Publication number: 20150126525
    Abstract: Provided are crystalline and amorphous vilazodone hydrochloride. Further provided are amorphous solid dispersions of vilazodone hydrochloride with pharmaceutically acceptable carries. Also provided is a process for the preparation of form I of vilazodone free base.
    Type: Application
    Filed: May 10, 2013
    Publication date: May 7, 2015
    Inventors: Javed Iqbal, Srinivas Oruganti, Rajesh Kumar Rapolu, Vishweshwar Peddy, Rajesham Boge, Deepika Pathivada, Dharma Jagannadha Rao Velaga, Sesha Reddy Yarraguntla, Sudhakar Reddy Baddam, Anitha Naredla, Kiran Kumar Doniparthi, Ramesh Kumar Nadgoud, Narasimha Rao Pagadala, Syam Kumar Unniaran, Srividya Ramakrishnan
  • PROCESS FOR PRODUCING (S)-EQUOL
    Publication number: 20150057456
    Abstract: The present application relates to an improved process for the preparation of (S)-equol (1). The present application also relates to novel intermediates of formula (7), (7A), (8) and (9) and their use for the synthesis of (5)-equol.
    Type: Application
    Filed: March 27, 2013
    Publication date: February 26, 2015
    Inventors: Vilas Hareshwar Dahanukar, Syam Kumar Unniaran Kunhimon, Upadhya Timmana, Abir Kumar Pal, Mahendar Macha, Venkata Madhubabu Meesala, Krishna Mohan Thalabathula, Shankar Ramanathan
  • PROCESS FOR PREPARATION OF PREGABALIN
    Publication number: 20140243412
    Abstract: Aspects of the present invention relate to improved process for preparation of (R)(?)-3-(carbamoylmethyl)-5-methylhexanoic acid (R-CMHA) of the formula (II) or its pharmaceutically acceptable salts in the presence of a lewis acid, process for preparation of pregabalin using R-CMHA of the formula (II) or its pharmaceutically acceptable salts prepared according to the present invention and process for preparation of pregabalin with low amount of undesired impurity.
    Type: Application
    Filed: February 27, 2014
    Publication date: August 28, 2014
    Applicant: Dr. Reddy's Laboratories Ltd.
    Inventors: Srinivas GANGULA, Uday Kumar NEELAM, Krishna VINIGARI, Vilas Hareshwar DAHANUKAR, Syam Kumar Unniaran KUNHIMON, Srinivas Reddy GADE
  • PROCESS FOR THE PREPARATION OF A SINGLE ENANTIOMER OF 3-AMINOPIPERIDINE DIHYDROCHLORIDE
    Publication number: 20130172562
    Abstract: A process comprising: (a) reduction of N-acetyl-3-aminopyridine (2): or its salt in the presence of hydrogen and a palladium catalyst deposited on solid support; (b) converting racemic N-acetyl-3-aminopiperidine (3) or its salt produced in step (a) to rac-3-aminopiperidine (rac-4) or its salt; (c) resolution of the racemic 3-aminopiperidine (rac-4) or its salt produced in step (b) with a chiral acid.
    Type: Application
    Filed: June 17, 2011
    Publication date: July 4, 2013
    Applicants: DR. REDDY'S LABORATORIES, INC., DR. REDDY'S LABORATORIES LTD.
    Inventors: Graham Andrew Meek, Syam Kumar Unniaran Purakkal Kunhimon, R Shankar, Vilas Hareshwar Dahanukar, TH. Krishna Mohan, Manoj Balu Wagh, Abir Kumar Pal, V. Madhu Babu Meesala, Sonmit Shrivastava