Patents by Inventor Parimal Hasmukh Desai

Parimal Hasmukh Desai 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 preparation of optically pure R (?) salbutamol and its pharmaceutically acceptable salts
    Patent number: 8063251
    Abstract: A process for the preparation of optically pure R (?) salbutamol of formula (6) and its pharmaceutically acceptable salts by using a (+) 4-nitro tartranilic acid as the resolving agent and a binary solvent system comprising alkyl acetate and C1 to C4 branched or normal chain alcohol for dissolution of the racemic mixture and resolving agent and purification of the 4-nitro tartranilic acid salt of R (?) salbutamol. 4-nitro tartranilic acid salt of R (?) salbutamol is converted into formic acid salt of R (?) 4-benzyl salbutamol followed by basification and debenzylation to form optically pure R (?) salbutamol. Optically pure (R)-salbutamol is obtained in good yield and high purity. The optically pure R (?) salbutamol is optionally converted into pharmaceutically acceptable salts.
    Type: Grant
    Filed: September 25, 2006
    Date of Patent: November 22, 2011
    Assignee: Aarti Healthcare Limited
    Inventors: Parimal Hasmukh Desai, Narendra Jagannath Salvi, Bharatkumar Surendra Patravale, Subramanian Seetharaman, Dilip Jibhau Patil, Khandu Shankar Ghogare