Patents by Inventor Jammula Vera Venkata Krishna Kishore

Jammula Vera Venkata Krishna Kishore 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 the preparation of Carvedilol Form II
    Patent number: 8058453
    Abstract: A cost-effective, industrially feasible process for the manufacture of crystalline Carvedilol Form-II using novel Carvedilol salts comprises the steps of reacting 4-(2,3-epoxy propoxy)carbazole (II) with 2-(2-methoxy phenoxy)ethyl amine (III) followed by acidification with mineral acid in presence of an organic solvent to yield acid addition salts, treatment of the said salts with base(s) in presence of organic solvent(s), water and isolation from the organic solvent(s) followed by crystallization from ethyl acetate.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: November 15, 2011
    Assignee: Matrix Laboratories Ltd.
    Inventors: Gorantla Seeta Ramanjaneyulu, Indukuri Venkata Sunil Kumar, Ketavarapu Narasimha Rao, Jammula Vera Venkata Krishna Kishore
  • PROCESS FOR THE PREPARATION OF CARVEDILOL FORM II
    Publication number: 20090286991
    Abstract: A cost-effective, industrially feasible process for the manufacture of crystalline Carvedilol Form-II using novel Carvedilol salts comprises the steps of reacting 4-(2,3-epoxy propoxy)carbazole (II) with 2-(2-methoxy phenoxy)ethyl amine (III) followed by acidification with mineral acid in presence of an organic solvent to yield acid addition salts, treatment of the said salts with base(s) in presence of organic solvent(s), water and isolation from the organic solvent(s) followed by crystallization from ethyl acetate.
    Type: Application
    Filed: December 22, 2008
    Publication date: November 19, 2009
    Inventors: GORANTLA SEETA RAMANJANEYULU, Indukuri Venkata Sunil Kumar, Katavarapu Narasimha Rao, Jammula Vera Venkata Krishna Kishore
  • Process for the preparation of carvedilol form-II
    Patent number: 7468442
    Abstract: The present invention provides a cost-effective, industrially feasible process for the manufacture of crystalline Carvedilol Form-II using novel Carvedilol salts comprising a step of reacting 4-(2,3-epoxy propoxy)carbazole (II) with 2-(2-methoxy phenoxy)ethyl amine (III) followed by acidification with mineral acid in presence of an organic solvent to yield acid addition salts, treatment of the said salts with base(s) in presence of organic solvent(s), water and isolation from the organic solvent(s) followed by crystallization from ethyl acetate.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: December 23, 2008
    Assignee: Matrix Laboratories Ltd.
    Inventors: Gorantla Seeta Ramanjaneyulu, Indukuri Venkata Sunil Kumar, Ketavarapu Narasimha Rao, Jammula Vera Venkata Krishna Kishore