Patents by Inventor Bandi Vamsi Krishna

Bandi Vamsi Krishna 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 bendamustine hydrochloride
    Patent number: 9273010
    Abstract: The present invention provides a process for the preparation of 1H-benzimidazol-1-methyl-5-N,N-di(2-hydroxyethyl)-2-butanoic acid ethyl ester. The present invention also provides a process for the preparation of bendamustine hydrochloride. The present invention further provides a process for the purification of bendamustine hydrochloride.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: March 1, 2016
    Assignee: Hetero Research Foundation
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Bandi Vamsi Krishna
  • Rilpivirine hydrochloride
    Patent number: 9233935
    Abstract: The present invention provides a novel process for the preparation of rilpivirine. The present invention also provides a novel process for the preparation of rilpivirine hydrochloride. The present invention further provides a rilpivirine hydrochloride monohydrate, process for its preparation and pharmaceutical compositions comprising it.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: January 12, 2016
    Assignee: HETERO RESEARCH FOUNDATION
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Adulla Venkat Narsimha Reddy, Bandi Vamsi Krishna
  • Crystalline hydrochloride salt of darunavir
    Patent number: 9175005
    Abstract: The present invention provides novel crystalline hydrochloride salt of darunavir, process for its preparation and to pharmaceutical composition comprising it. The present invention also provides novel process for preparation of darunavir amorphous form and pharmaceutical composition comprising it.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: November 3, 2015
    Assignee: HETERO RESEARCH FOUNDATION
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Rapolu Raji Reddy, Bandi Vamsi Krishna, Kesireddy Subash Chander Reddy
  • NOVEL POLYMORPHS OF AZILSARTAN
    Publication number: 20150291574
    Abstract: The present invention provides a novel crystalline Form of azilsartan acid, process for its preparation and pharmaceutical compositions comprising it. The present invention also provides a novel crystalline Form of azilsartan medoxomil potassium, process for its preparation and pharmaceutical compositions comprising it.
    Type: Application
    Filed: July 8, 2013
    Publication date: October 15, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Matta Ramakrishna Reddy, Bandi Vamsi Krishna
  • LINAGLIPTIN SOLID DISPERSION
    Publication number: 20150290199
    Abstract: The present invention provides a novel amorphous solid dispersion of linagliptin in combination with a pharmaceutically acceptable carrier, process for its preparation and pharmaceutical compositions comprising it.
    Type: Application
    Filed: July 8, 2013
    Publication date: October 15, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Redd, Bandi Vamsi Krishna
  • Process for sorafenib tosylate polymorph III
    Patent number: 9156789
    Abstract: The present invention provides a novel process for the preparation of sorafenib tosylate polymorph III.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: October 13, 2015
    Assignee: HETERO RESEARCH FOUNDATION
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Thungathurthy Srinivasa Rao, Bandi Vamsi Krishna
  • Process for the preparation of pazopanib using novel intermediate
    Patent number: 9150547
    Abstract: The present invention provides a commercially viable process for preparing pazopanib and its pharmaceutically acceptable acid addition salts thereof in high yields using novel intermediate. The present invention also provides a process for the purification of pazopanib hydrochloride.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: October 6, 2015
    Assignee: HETERO RESEARCH FOUNDATION
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Thungathurthy Srinivasa Rao, Bandi Vamsi Krishna
  • Process for rilpivirine using novel intermediate
    Patent number: 9139535
    Abstract: The present invention provides a commercially viable process for preparing rilpivirine and its pharmaceutically acceptable acid addition salts thereof in high yields using novel intermediate.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: September 22, 2015
    Assignee: Hetero Research Foundation
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Adulla Venkat Narsimha Reddy, Bandi Vamsi Krishna
  • PROCESS FOR PRALATREXATE
    Publication number: 20150252045
    Abstract: The present invention provides a novel process for the purification of alpha-propargylhomoterephthalic acid dimethyl ester substantially free of homoterephthalic acid dimethyl ester. The present invention also provides a novel process for the purification of pralatrexate.
    Type: Application
    Filed: November 1, 2013
    Publication date: September 10, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Katham Srinivasa Reddy, Bandi Vamsi Krishna
  • Process for rilpivirine
    Patent number: 9126949
    Abstract: The present invention provides a novel process for the preparation of 4-(4-hydroxypyrimidin-2-ylamino)benzonitrile. The present invention also provides a novel process for the preparation of 4-iodo-2,6-dimethyl benzenamine. The present invention further provides an improved process for the preparation of rilpivirine. The present invention further provides a tosylate salt of rilpivirine, process for its preparation and pharmaceutical compositions comprising it.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: September 8, 2015
    Assignee: HETERO RESEARCH FOUNDATION
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Adulla Venkat Narsimha Reddy, Bandi Vamsi Krishna
  • Process for the resolution of omeprazole
    Patent number: 9115118
    Abstract: The present invention relates to process for the resolution of omeprazole. The present invention further provides a novel compound of enantiomers of omeprazole cyclic amine salt and a process for preparing it. The present invention also provides a solid of (R)- or (S)-omeprazole cyclic amine salt and a process for preparing it. The present invention also provides a process for the preparation of esomeprazole magnesium dehydrate substantially free of its trihydrate form. The present invention also provides a process for the preparation of recovery of chiral BINOL.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: August 25, 2015
    Assignee: Hetero Research Foundation
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Rapolu Raji Reddy, Dasari Muralidhara Reddy, Bandi Vamsi Krishna, Voggu Ramesh Reddy
  • Amorphous ritonavir co-precipitated
    Patent number: 9096556
    Abstract: The present invention relates to amorphous ritonavir co-precipitated on copovidone, process for its preparation and pharmaceutical compositions comprising it.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 4, 2015
    Assignee: HETERO RESEARCH FOUNDATION
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Bandi Vamsi Krishna
  • NOVEL POLYMORPHS OF AZILSARTAN MEDOXOMIL
    Publication number: 20150183767
    Abstract: The present invention provides a novel amorphous Form of azilsartan acid, process for its preparation and pharmaceutical compositions comprising it. The present invention also provides novel crystalline Forms of azilsartan medoxomil, processes for their preparations and pharmaceutical compositions comprising them. The present invention further provides a novel amorphous Form of azilsartan medoxomil potassium, process for its preparation and pharmaceutical compositions comprising it. The present invention further provides a novel process for the preparation of azilsartan medoxomil potassium crystalline Form II.
    Type: Application
    Filed: July 19, 2013
    Publication date: July 2, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Matta Ramakrishna Reddy, Bandi Vamsi Krishna
  • PROCESS FOR RILPIVIRINE USING NOVEL INTERMEDIATE
    Publication number: 20150183751
    Abstract: The present invention provides a commercially viable process for preparing rilpivirine and its pharmaceutically acceptable acid addition salts thereof in high yields using novel intermediate.
    Type: Application
    Filed: July 8, 2013
    Publication date: July 2, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Adulla Venkat Narsimha Reddy, Bandi Vamsi Krishna
  • RUFINAMIDE SOLID DISPERSION
    Publication number: 20150182458
    Abstract: The present invention provides a solid dispersion of rufinamide in combination with a pharmaceutically acceptable carrier, process for its preparation and pharmaceutical compositions comprising it.
    Type: Application
    Filed: July 18, 2013
    Publication date: July 2, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Reddy, Bandi Vamsi Krishna
  • ELVITEGRAVIR SOLID DISPERSION
    Publication number: 20150141457
    Abstract: The present invention provides a novel amorphous solid dispersion of elvitegravir in combination with a pharmaceutically acceptable carrier, process for its preparation and pharmaceutical compositions comprising it. In a preferred embodiment the process for the preparation of amorphous solid dispersion of elvitegravir in combination with a pharmaceutically acceptable carrier comprises: preparing a solution comprising a mixture of elvitegravir and one or more pharmaceutically acceptable carriers selected from copovidone, ethyl cellulose, hydroxypropyl methylcellulose, polyethylene glycol, span 20 or soluplus in a solvent; and removing the solvent from the solution obtained; adding hydrocarbon solvent to the residual solid; and isolating amorphous solid dispersion of elvitegravir in combination with a pharmaceutically acceptable carrier.
    Type: Application
    Filed: May 21, 2013
    Publication date: May 21, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Reddy, Bandi Vamsi Krishna
  • PROCESS FOR SORAFENIB TOSYLATE POLYMORPH III
    Publication number: 20150133670
    Abstract: The present invention provides a novel process for the preparation of sorafenib tosylate polymorph III.
    Type: Application
    Filed: May 21, 2013
    Publication date: May 14, 2015
    Applicant: HETERO RESEARCH FOUNDATION
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Thungathurthy Srinivasa Rao, Bandi Vamsi Krishna
  • Process for preparing tolvaptan intermediates
    Patent number: 9024015
    Abstract: The present invention provides a novel process for the preparation of 7-chloro-2,3,4,5-tetrahydro-1H-1-benzazepin-5-one. The present invention also provides an improved process for the preparation of 7-chloro-1-(2-methyl-4-nitrobenzoyl)-5-oxo-2,3,4,5-tetrahydro-1H-1-benzazepine. The present invention further provides an improved process for the preparation of 7-chloro-1-[2-methyl-4-[(2-methylbenzoyl)amino]benzoyl]-5-oxo-2,3,4,5-tetrahydro-1H-1-benzazepine.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: May 5, 2015
    Assignee: Hetero Research Foundation
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Maruthi Janakiram Reddy, Bandi Vamsi Krishna
  • AMORPHOUS FORM OF LOPINAVIR AND RITONAVIR MIXTURE
    Publication number: 20150080420
    Abstract: The present invention relates to a novel amorphous Form of lopinavir and ritonavir mixture in the ratio of 3.8:1.2 to 4.2:0.8, process for its preparation and pharmaceutical compositions comprising it.
    Type: Application
    Filed: June 30, 2014
    Publication date: March 19, 2015
    Inventors: Bandi Parthasaradhi Reddy, Kura Rathnakar Reddy, Dasari Muralidhara Reddy, Kesireddy Subash Chander Reddy, Bandi Vamsi Krishna
  • CRYSTALLINE HYDROCHLORIDE SALT OF DARUNAVIR
    Publication number: 20150080589
    Abstract: The present invention provides novel crystalline hydrochloride salt of darunavir, process for its preparation and to pharmaceutical composition comprising it. The present invention also provides novel process for preparation of darunavir amorphous form and pharmaceutical composition comprising it.
    Type: Application
    Filed: July 8, 2014
    Publication date: March 19, 2015
    Inventors: Bandi PARTHASARADHI REDDY, Kura RATHNAKAR REDDY, Dasari MURALIDHARA REDDY, Rapolu RAJI REDDY, Bandi VAMSI KRISHNA, Kesireddy SUBASH CHANDER REDDY