Patents by Inventor Srinivasu Kasa

Srinivasu Kasa 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 HIGH PURE ERIBULIN AND ITS MESYLATE SALT
    Publication number: 20220089607
    Abstract: The present invention relates to a process for the preparation of high pure Eribulin and Eribulin Mesylate. The present invention involves preparation of high pure Eribulin and its mesylate salt involving chiral acid addition salts of Eribulin.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 24, 2022
    Inventors: Prabhakar DIVYA, Srinivasu KASA, Durga Prasad KONAKANCHI, Ramesh DANDALA, Pulla Reddy MUDDASANI, Venkaiah Chowdary NANNAPANENI
  • PROCESS FOR THE PREPARATION OF BOSENTAN MONOHYDRATE
    Publication number: 20130245259
    Abstract: The invention relates to improved processes for the preparation of bosentan monohydrate which provide higher yield and purity.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 19, 2013
    Applicant: Natco Pharma Limited
    Inventors: Amala Kishan Kompella, Srinivasu Kasa, Veera Swamy Balina, Subhash Kusumba, Kali Satya Bhujanga Rao Adibhatla, Venkaiah Chowdary Nannapaneni
  • PROCESS TO PREPARE S-2-HYDROXY-3-METHOXY-3,3-DIPHENYL PROPIONIC ACID
    Publication number: 20130184490
    Abstract: Disclosed is a process for the preparation of S-2-Hydroxy-3-methoxy-3,3-diphenylpropionic acid (I) the key intermediate for the preparation of Ambrisentan [(+)-2(S)-(4,6-Dimethylpyrimidin-2-yloxy)-3-methoxy-3,3-diphenylpropionic acid]. Ambrisentan of the formula (IA) is approved under the trademark “Letairis ®” by the US Food and Drug Administration for the treatment of Pulmonary artery hypertension (PAH).
    Type: Application
    Filed: August 4, 2010
    Publication date: July 18, 2013
    Applicant: NATCO PHARMA LIMITED
    Inventors: Amala Kompella, Kali Satya Bhujanga Rao Adibhatla, Veera Swamy Balina, Srinivasu Kasa, Venkaiah Chowdary Nannapaneni
  • PROCESS FOR THE PREPARATION OF HIGHLY PURE AMBRISENTAN
    Publication number: 20130060031
    Abstract: The present invention relates to an improved and novel process for the preparation of highly pure (>99.8%) (+)-2(S)-(4,6-dimethylpyrimidin-2-yloxy)-3-methoxy-3,3-diphenylpropionic acid (Ambrisentan) of formula (I).
    Type: Application
    Filed: March 15, 2010
    Publication date: March 7, 2013
    Applicant: Natco Pharma Limited
    Inventors: Amala Kompella, Kali Satya Bhujanga Ra Adibhatla, Veera Swamy Balina, Srinivasu Kasa, Venkaiah Chowdary Nannapaneni