Patents by Inventor Rama Krishna Pilli

Rama Krishna Pilli 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).

  • 7-(morpholinyl)-2-(N-piperazinyl) methyl thieno [2, 3-C] pyridine derivatives as anticancer drugs
    Patent number: 10106554
    Abstract: The present invention relates to novel series of substituted 7-(morpholinyl)-2-(N-piperazinyl)-methyl thieno [2, 3-c] pyridines of the following structure of formula I. Where in R1, R2, R3 and R4 are defined.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: October 23, 2018
    Assignee: NATCO PHARMA LIMITED
    Inventors: Durga Prasad Konakanchi, Subba Rao Pula, Rama Krishna Pilli, Lakshmana Viswa Venkata Pavan Kumar Maddula, Srinivasa Krishna Murthy Konduri, Janaki Rama Rao Ravi, Naga Vasanta Srinivasu Vuppalapati, Sandeep Kumar Thoota, Pulla Reddy Muddasani, Kali Satya Bhujanga Rao Adibhatla, Venkaiah Chowdary Nannapaneni
  • 7-(MORPHOLINYL)-2-(N-PIPERAZINYL) METHYL THIENO [2, 3-C] PYRIDINE DERIVATIVES AS ANTICANCER DRUGS
    Publication number: 20170320891
    Abstract: The present invention relates to novel series of substituted 7-(morpholinyl)-2-(N-piperazinyl)-methyl thieno [2, 3-c] pyridines of the following structure of formula I. Where in R1, R2, R3 and R4 are defined.
    Type: Application
    Filed: December 11, 2014
    Publication date: November 9, 2017
    Inventors: Durga Prasad KONAKANCHI, Subba Rao PULA, Rama Krishna PILLI, Lakshmana Viswa Venkata Pavan Kumar MADDULA, Srinivasa Krishna Murthy KONDURI, Janaki Rama Rao RAVI, Naga Vasanta Srinivasu VUPPALAPATI, Sandeep Kumar THOOTA, Pulla Reddy MUDDASANI, Kali Satya Bhujanga Rao ADIBHATLA, Venkaiah Chowdary NANNAPANENI
  • Process for the preparation of Tenofovir
    Patent number: 8049009
    Abstract: The present invention relates to novel Tenofovir disoproxil hemifumarate salt, which is prepared by dealkylation of Phosphonate esters by using mineral acids followed by esterification and crystallization to give crystalline Tenofovir disoproxil. The Tenofovir disoproxil is further converted to fumarate salts with improved yield.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: November 1, 2011
    Assignee: Matrix Laboratories Ltd.
    Inventors: Uma Maheswer Rao Vasireddy, Siva Rama Prasad Vellanki, Raja Babu Balusu, Naga Durga Rao Bandi, Pavan Kumar Jujjavarapu, Sambasiva Rao Ginjupalli, Rama Krishna Pilli
  • PROCESS FOR THE PREPARTION OF TENOFOVIR
    Publication number: 20090286981
    Abstract: The present invention relates to novel Tenofovir disoproxil hemifumarate salt, which is prepared by dealkylation of Phosphonate esters by using mineral acids followed by esterification and crystallization to give crystalline Tenofovir disoproxil. The Tenofovir disoproxil is further converted to fumarate salts with improved yield.
    Type: Application
    Filed: January 12, 2009
    Publication date: November 19, 2009
    Inventors: Uma Maheswer Rao Vasireddy, Siva Rama Prasad Vellanki, Raja Babu Balusu, Naga Durga Rao Bandi, Pavan Kumar Jujjavarapu, Sambasiva Rao Ginjupalli, Rama Krishna Pilli