Patents by Inventor Dilip Ramdas Birari

Dilip Ramdas Birari 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 an ace inhibitor
    Publication number: 20090069574
    Abstract: A process for the synthesis of trandolapril which comprises condensing N-[I-(S)-ethoxycarbonyl-3-phenylpropyl]-L-alanine N-carboxyanhydride with trans octahydro-1H-indole-2-carboxylic acid in a first organic solvent comprising a water immiscible inert organic solvent and in the presence of a base, and isolating trandolapril from a second organic solvent. N-[1-(S)-ethoxycarbonyl-3-phenylpropyl]-L-alanine N-carboxyanhydride may also be condensed with (2S,3aR,7aS) octahydro-1H-indole-2-carboxylic acid in a first organic solvent and in the presence of a base, and trandolapril isolated. There is also provided a process for the resolution of racemic trans octahydro-1H-indole-2-carboxylc acid.
    Type: Application
    Filed: July 5, 2006
    Publication date: March 12, 2009
    Inventors: Rajendra Narayanrao Kankan, Dharmaraj Ramachandra Rao, Manjinder Singh Phull, Ashwini Sawant, Dilip Ramdas Birari
  • Fexofenadine polymorphs and processes of preparing the same
    Patent number: 7470789
    Abstract: Anhydrous crystalline fexofenadine hydrochloride Form C, crystalline fexofenadine acetate monohydrate Form D, crystalline fexofenadine acetate dihydrate Form E and crystalline fexofenadine free base monohydrate Form F, processes of preparing the same, pharmaceutical compositions thereof, therapeutic uses thereof and methods of treatment therewith.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: December 30, 2008
    Assignee: Cipla Limited
    Inventors: Dharmaraj Ramachandra Rao, Rajendra Narayanrao Kankan, Manish Gopaldas Gangrade, Dilip Ramdas Birari