Patents by Inventor Thota Giridhar

Thota Giridhar 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 SEPARATION OF ENANTIOMERICALLY PURE COMPOUNDS
    Publication number: 20110230666
    Abstract: The present patent application relates to an improved process for the separation of enantiomerically pure compounds. Specifically it relates to separation of enantiomerically enriched Rivastigmine, Duloxetine, Escitalopram and their intermediates in high yields.
    Type: Application
    Filed: February 5, 2009
    Publication date: September 22, 2011
    Applicant: SHODHANA LABORATORIES LIMITED
    Inventors: Thota Giridhar, Gudipati Srinivasulu, Kotaru Srinivasa Rao
  • Preparation of Escitalopram, Its Salts and Intermediates
    Publication number: 20110092719
    Abstract: The present patent application relates to an improved process for the preparation of escitalopram, its salts and intermediates. It also relates to a novel crystalline form S of citalopram diol intermediate, process for preparation and its use in the preparation of citalopram, escitalopram and their salts.
    Type: Application
    Filed: May 28, 2009
    Publication date: April 21, 2011
    Applicant: SHODHANA LABORATORIES LIMITED
    Inventors: Thota Giridhar, Gudipati Srinivasulu, Kotaru Srinivasa Rao
  • Methods for the preparation of polymorphs of doxazosin mesylate
    Patent number: 6399775
    Abstract: Form D of doxazosin mesylate and a process for preparing Form D of doxazosin mesylate is described. The process is (a) dissolving doxazosin base and methane sulfonic acid in an alcohol having 1 to 8 carbon atoms; (b) precipitating Form D of doxazosin mesylate from the resulting solution; and (c) separating the Form D of doxazosin mesylate.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: June 4, 2002
    Inventors: Thota Giridhar, Reguri Buchi Reddy, Chakka Ramesh
  • Methods for the preparation of polymorphs of doxazosin mesylate
    Publication number: 20020065287
    Abstract: Methods for the preparation of polymorphic forms of doxazosin mesylate are provided.
    Type: Application
    Filed: October 31, 2001
    Publication date: May 30, 2002
    Inventors: Thota Giridhar, Reguri Buchi Reddy, Chakka Ramesh