Patents by Inventor Vasireddy Umamaheswara-Rao

Vasireddy Umamaheswara-Rao 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).

  • Crystalline forms of Nelfinavir mesylate
    Patent number: 8367832
    Abstract: The present invention provides novel crystalline forms of Nelfinavir mesylate, Form-A, Form-B, Form-C, Form-D and the process for their preparation without the use of any special equipment such as a spray drier, avoiding the use of highly flammable solvents such as ethers. The crystalline form can be tailored with the selection of the ante solvent and appropriate conditions for the process.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: February 5, 2013
    Assignee: Mylan Laboratories Limited
    Inventors: Chava Satyanarayana, Vasireddy Umamaheswara-Rao, Vellanki Siva Ram Prasad, Balusu Rajababu
  • QUINOLINE CARBOXYLIC ACID-O,O BIS-ACYLOXY BORATE AND PROCESS OF MAKING
    Publication number: 20090259041
    Abstract: The intermediate (4aS-Cis)-1-cyclopropyl-7-(2,8-diazabicyclo[4.3.0]non-8-yl)-6-fluoro-8-me-thoxy-4-oxo-1,4-dihydro-3-quinoline carboxylic acid-O3,O4)bis(acyloxy-0) borate and a method of preparation. The intermediate is useful in an improved process for the preparation of moxifloxacin hydrochloride from ethyl 1-cyclopropyl 6,7-difluoro-8-methoxy-4-oxo-1,4-dihydro-3-quinolinecarboxylate.
    Type: Application
    Filed: January 30, 2009
    Publication date: October 15, 2009
    Inventors: CHAVA SATYANARAYANA, GORANTLA SEETA RAMANJANEYULU, VASIREDDY UMAMAHESWARA RAO, DAMMALAPATI VENKATA LAKSHMI NARASIMHARAO
  • Novel Crystalline Forms Of Nelfinavir Mesylate
    Publication number: 20080312445
    Abstract: The present invention provides novel crystalline forms of Nelfinavir mesylate, Form-A, Form-B, Form-C, Form-D and the process for their preparation without the use of any special equipment such as a spray drier, avoiding the use of highly flammable solvents such as ethers. The crystalline form can be tailored with the selection of the ante solvent and appropriate conditions for the process.
    Type: Application
    Filed: August 23, 2004
    Publication date: December 18, 2008
    Inventors: Chava Satyanarayana, Vasireddy Umamaheswara-Rao, Vellanki Siva Ram Prasad, Balusu Rajababu