Patents by Inventor Manne Satyanarayana Reddy

Manne Satyanarayana Reddy 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).

  • Forms of dutasteride and methods for preparation thereof
    Publication number: 20040077673
    Abstract: A crystalline Form II of 17&bgr;-N-[2,5-bis (trifluoromethyl)phenyl]carbamoyl-4-aza-5-&agr;-androst-1-en-3-one (dutasteride) is provided. The preferred crystalline Form II of dutasteride has an X-ray powder diffraction pattern, expressed in terms of d-spacing (in ° A), with peaks at about 13.42, 6.96, 6.13, 5.27, 4.77, 4.70, 4.58, 4.46 and 3.82. A process for preparation of a crystalline Form II of dutasteride is also provided and includes dissolving a crude form of dutasteride in an alcoholic solvent having from 1 to 5 carbon atoms; removing the alcoholic solvent to obtain a residue; adding an ester solvent to the residue; and filtering the resulting separated solids. The processes of the invention are believed to be simple, eco-friendly, and commercially viable.
    Type: Application
    Filed: July 17, 2003
    Publication date: April 22, 2004
    Applicants: DR. REDDY'S LABORATORIES LIMITED, DR. REDDY'S LABORATORIES, INC.
    Inventors: Manne Satyanarayana Reddy, Chakilam Nagaraju, Gudipati Srinivasulu, Mandava Venkata Naga Brahmeshwar Rao, Bojja Ramachandra Reddy