Patents by Inventor Subhash P. Upadhyaya

Subhash P. Upadhyaya 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).

  • Optimized procedures for the manufacture of paroxetine salts
    Publication number: 20030032809
    Abstract: Described herein are methods for manufacturing amorphous paroxetine hydrochloride by mixing a carboxylic acid salt of paroxetine with hydrogen chloride and isolating the amorphous paroxetine hydrochloride. Also described herein are methods for manufacturing substantially pure paroxetine free base and methods for obtaining paroxetine salts such as paroxetine acetate, paroxetine trifluoroacetate, and paroxetine formate. Also described are methods for preparing paroxetine carbonate, paroxetine phosphate, paroxetine sulfate, and analogous salts thereof. The paroxetine salts may be formulated for the treatment of medical disorders as described.
    Type: Application
    Filed: April 25, 2002
    Publication date: February 13, 2003
    Inventors: Subhash P. Upadhyaya, Bruce Ronsen, Bryant Wojcik
  • Process for preparing arylpiperidine carbinol intermediates and derivatives
    Publication number: 20010053862
    Abstract: A process for the synthesis of arylpiperidine carbinol intermediates and derivatives is disclosed.
    Type: Application
    Filed: March 22, 2001
    Publication date: December 20, 2001
    Inventors: Bruce Ronsen, Subhash P. Upadhyaya