Patents by Inventor Uppala Rao

Uppala Rao 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).

  • Ziprasidone process
    Publication number: 20060089502
    Abstract: A process for preparing ziprasidone having low levels of keto ziprasidone and hydroxy ziprasidone impurities.
    Type: Application
    Filed: October 26, 2005
    Publication date: April 27, 2006
    Inventors: Sundaram Venkataraman, Uppala Rao, Venkateswarlu Muvva, Vijayawardhan Chitta
  • Process for the preparation of 5-(2-(4-(1,2-benzisothiazol-3-yl)-1piperazinyl) ethyl)-6-chloro-1, 3-dihydro-2h-indol-2-one hydrochloride (ziprasidone hydrochloride) and its intermediate
    Publication number: 20050049295
    Abstract: The present invention relates to improved processes for the preparation of 5-(2-(4-(1,2-benzisothiazol-3-yl)-1-piperazinyl) ethyl)-6-chloro-1,3-dihydro-2H-indol-2-one and its hydrochloride, which is known as Ziprasidone hydrochloride of Formula (I) and 5-(2-Chloro acetyl)-6-chloro oxindole of Formula (IV), which is an intermediate for the preparation of 5-(2-chloro ethyl)-6-chloro oxindole of Formula (V). Ziprasidone hydrochloride of Formula (I) of the present invention is depicted by the following structure.
    Type: Application
    Filed: June 14, 2004
    Publication date: March 3, 2005
    Inventors: Manne Reddy, Sundaram Venkatraman, Srinivasan Rajan, Sharat Narsapur, Manoj Kharkar, Surya Devarkonda, Yarraguntla Reddy, Rangineni Srinivasulu, Deepak Shukla, Pushkar Lakhekar, Uppala Rao, Mummadi Venkatesh