Patents by Inventor Durga Prasad Konakanchi

Durga Prasad Konakanchi 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).

  • Anhydrous lenalidomide form-I
    Patent number: 9108945
    Abstract: Anhydrous polymorphic form-I of anti cancer drug, Lenalidomide whose chemical name is 3-(4-amino-1-oxo-1,3-dihydro-isoindole-2-yl)-piperidine-2,6-dione, is disclosed. Alternate methods for making anhydrous polymorphic form-I of Lenalidomide are also disclosed.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: August 18, 2015
    Assignee: Natco Pharma Limited
    Inventors: Durga Prasad Konakanchi, Buchappa Gongalla, Kotayya Babu Sikha, Chandrasekar Kandaswamy, Kali Satya Bhujanga Rao Adibhatla, Venkaiah Chowdary Nannapaneni
  • Anhydrous lenalidomide form-I
    Patent number: 8877932
    Abstract: Anhydrous polymorphic form-I of anti cancer drug, Lenalidomide whose chemical name is 3-(4-amino-1-oxo-1, 3-dihydro-isoindole-2-yl)-piperidine-2,6-dione, is disclosed. Alternate methods for making anhydrous polymorphic form-I of Lenalidomide are also disclosed.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: November 4, 2014
    Assignee: Natco Pharma Limited
    Inventors: Durga Prasad Konakanchi, Buchappa Gongalla, Kotayya Babu Sikha, Chandrasekar Kandaswamy, Kali Satya Bhujanga Rao Adibhatla, Venkaiah Chowdary Nannapaneni
  • ANHYDROUS LENALIDOMIDE FORM-I
    Publication number: 20140121245
    Abstract: Anhydrous polymorphic form-I of anti cancer drug, Lenalidomide whose chemical name is 3-(4-amino-1-oxo-1,3-dihydro-isoindole-2-yl)-piperidine-2,6-dione, is disclosed. Alternate methods for making anhydrous polymorphic form-I of Lenalidomide are also disclosed.
    Type: Application
    Filed: January 9, 2014
    Publication date: May 1, 2014
    Applicant: Natco Pharma Limited
    Inventors: Durga Prasad Konakanchi, Buchappa Gongalla, Kotayya Babu Sikha, Chandrasekar Kandaswamy, Kali Satya Bhujanga Rao Adibhatla, Venkaiah Chowdary Nannapaneni
  • ANHYDROUS LENALIDOMIDE FORM-I
    Publication number: 20130059889
    Abstract: Anhydrous polymorphic form-I of anti cancer drug, Lenalidomide whose chemical name is 3-(4-amino-1-oxo-1,3-dihydro-isoindole-2-yl)-piperidine-2,6-dione, is disclosed. Alternate methods for making anhydrous polymorphic form-I of Lenalidomide are also disclosed.
    Type: Application
    Filed: March 8, 2010
    Publication date: March 7, 2013
    Applicant: NATCO PHARMA LIMITED
    Inventors: Durga Prasad Konakanchi, Buchappa Gongalla, Kotayya Babu Sikha, Chandrasekar Kandaswamy, Kali Satya Bhujanga Rao Adibhatla, Venkaiah Chowdary Nannapaneni
  • Pyrazolo [3,4-D] pyrimidine derivatives as anti-cancer agents
    Patent number: 8349847
    Abstract: The invention relates to substituted pyrazolo[3,4-d]pyrimidine derivatives of the Formula-(I), or pharmaceutically-acceptable salts thereof, which possess anti-proliferative activity such as anti-cancer activity and are accordingly useful in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of substituted pyrazolo[3,4-d]pyrimidine derivatives, to pharmaceutical compositions containing the compound and to its use in the manufacture of medicaments for the production of an anti-proliferative effect in a warm-blooded animal such as man.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: January 8, 2013
    Inventors: Durga Prasad Konakanchi, Subba Rao Pula, Lakshmi Ananthaneni, Ramakrishna Pilli, Muddasani Pulla Reddy, Bhujanga rao Adibhatla Satya, Nannapaneni Venkaiah Chowdary
  • NOVEL 4-(TETRAZOL-5-YL)-QUINAZOLINE DERIVATIVES AS ANTI CANCER AGENT
    Publication number: 20120172380
    Abstract: The invention relates to substituted 4-(tetrazol-5-yl)-quinazoline derivatives of the formula-I, or pharmaceutically acceptable salts thereof, which possess anti-proliferative activity such as anti-cancer activity and are accordingly useful in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of substituted 4-(tetrazol-5-yl)-quinazoline derivatives, to pharmaceutical compositions containing the compound and to its use in the manufacture of medicaments for the production of an anti-proliferative effect in a warm-blooded animal such as man.
    Type: Application
    Filed: December 19, 2011
    Publication date: July 5, 2012
    Applicant: Natco Pharma Limited
    Inventors: Durga prasad Konakanchi, Subba Rao Pula, Lakshmi Ananthaneni, Pulla Reddy Muddasani, Kali Satya Bhujanga Rao Adibhatla, Venkaiah Chowdary Nannapaneni
  • 4-(tetrazol-5-yl)-quinazoline derivatives as anti-cancer agent
    Patent number: 8080558
    Abstract: The invention relates to substituted 4-(tetrazol-5-yl)-quinazoline derivatives of the formula-I, or pharmaceutically-acceptable salts thereof, which possess anti-proliferative activity such as anti-cancer activity and are accordingly useful in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of substituted 4-(tetrazol-5-yl)-quinazoline derivatives, to pharmaceutical compositions containing the compound and to its use in the manufacture of medicaments for the production of an anti-proliferative effect in a warm-blooded animal such as man.
    Type: Grant
    Filed: October 28, 2008
    Date of Patent: December 20, 2011
    Assignee: Natco Pharma Limited
    Inventors: Durga Prasad Konakanchi, Subba Rao Pula, Lakshmi Ananthaneni, Muddasani Pulla Reddy, Bhujanga Rao Adibhatla Kali Satya, Nannapaneni Venkaiah Chowdary
  • NOVEL PYRAZOLO [3, 4 -D] PYRIMIDINE DERIVATIVES AS ANTI-CANCER AGENTS
    Publication number: 20100298351
    Abstract: The invention relates to substituted pyrazolo[3,4-d]pyrimidine derivatives of the Formula-(I), or pharmaceutically-acceptable salts thereof, which possess anti-proliferative activity such as anti-cancer activity and are accordingly useful in methods of treatment of the human or animal body. The invention also relates to processes for the manufacture of substituted pyrazolo[3,4-d]pyrimidine derivatives, to pharmaceutical compositions containing the compound and to its use in the manufacture of medicaments for the production of an anti-proliferative effect in a warm-blooded animal such as man.
    Type: Application
    Filed: January 12, 2009
    Publication date: November 25, 2010
    Applicant: Natco Pharma Limited
    Inventors: Durga Prasad Konakanchi, Subba Rao Pula, Lakshmi Ananthaneni, Ramakrishna Pilli, Muddasani Pulla Reddy, Bhujanga Rao Adibhatla Satya, Nannapaneni Venkaiah Chowdary