Patents by Inventor Rajesh Kumar Keshava Prasad Singh

Rajesh Kumar Keshava Prasad Singh 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 synthesis of Losartan potassium
    Patent number: 7345071
    Abstract: Improved processes using primary, secondary and tertiary alcohols and with safer mode of introduction of the reagent and reaction conditions are described. Further, the process of manufacture of Losartan potassium by use of alkali metal salt such as Potassium carbonate is disclosed. A process for preparation of the polymorphic Form I of Losartan potassium is also disclosed herein.
    Type: Grant
    Filed: August 5, 2004
    Date of Patent: March 18, 2008
    Assignee: IPCA Laboratories Limited
    Inventors: Ashok Kumar, Rajesh Kumar Keshava Prasad Singh, Nalinakshya Balaram Panda, Abhay Atmaram Upare, Manmohan Madhavrao Nimbalkar, Satish Rajanikant Soudagar, Ashvini Kumar Nand Kishore Saxena
  • Process for the synthesis of losartan potassium
    Publication number: 20050070586
    Abstract: Improved processes using primary, secondary and tertiary alcohols and with safer mode of introduction of the reagent and reaction conditions are described. Further, the process of manufacture of Losartan potassium by use of alkali metal salt such as Potassium carbonate is disclosed. A process for preparation of the polymorphic Form I of Losartan potassium is also disclosed herein.
    Type: Application
    Filed: August 5, 2004
    Publication date: March 31, 2005
    Inventors: Ashok Kumar, Rajesh Kumar Keshava Prasad Singh, Nalinakshya Panda, Abhay Upare, Manmohan Nimbalkar, Satish Soudagar, Ashvini Kumar Nand Kishore Saxena