Patents by Inventor Ramdas Chavakula

Ramdas Chavakula 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 almotriptan
    Patent number: 7943784
    Abstract: The present invention encompasses a method for the preparation of Almotriptan and its pharmaceutically acceptable salts comprises, i) Methylation of 3-[5-(1-Pyrrolidinyl sulfonyl methyl)1H-indol-yl]ethane amine ii) Treating crude Almotriptan with a hydroxy benzoic acid yields hydroxy benzoic acid addition salt of Almotriptan iii) Converting Almotriptan hydroxy benzoic acid addition salt to Almotriptan and iv) Salification of Almotriptan to its pharmaceutically acceptable salts.
    Type: Grant
    Filed: July 21, 2006
    Date of Patent: May 17, 2011
    Assignee: Matrix Laboratories Limited
    Inventors: Satyanarayana Chava, Seeta Ramanjaneyulu Gorantla, Ramdas Chavakula, Babu Rao Konudula
  • CRYSTALLINE FORM OF ATORVASTATIN HEMI-CALCIUM
    Publication number: 20090240064
    Abstract: The present invention relates to a new crystalline form of Atorvastatin hemi-calcium and also relates to a process for preparation of the same by treating Atorvastatin hemi-calcium amorphous form or form-I or mixture of amorphous and crystalline forms with methanol.
    Type: Application
    Filed: February 20, 2007
    Publication date: September 24, 2009
    Inventors: Venkata Panakala Rao Gogulapati, Ramdas Chavakula, Mohan Bandari, Seeta Ramanjaneyulu Gorantla
  • Process for the Preparation of Almotriptan
    Publication number: 20080234495
    Abstract: The present invention encompasses a method for the preparation of Almotriptan and its pharmaceutically acceptable salts comprises, i) Methylation of 3-[5-(1-Pyrrolidinyl sulfonyl methyl) 1H-indol-yl]ethane amine ii) Treating crude Almotriptan with a hydroxy benzoic acid yields hydroxy benzoic acid addition salt of Almotriptan iii) Converting Almotriptan hydroxy benzoic acid addition salt to Almotriptan and iv) Salification of Almotriptan to its pharmaceutically acceptable salts
    Type: Application
    Filed: July 21, 2006
    Publication date: September 25, 2008
    Inventors: Satyanarayana Chava, Seeta Ramanjaneyulu Gorantla, Ramdas Chavakula, Babu Rao Konudula