Patents by Inventor Krishna Challa

Krishna Challa 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).

  • SOLID FORMS OF (±)-O-DESMETHYLVENLAFAXINE SALTS
    Publication number: 20110046231
    Abstract: The present invention relates to solid forms of (±)-O-desmethylvenlafaxine salts, processes for preparation, pharmaceutical compositions, and method of treating thereof. More particularly, the present invention provides solid forms of acid addition salts of (±)-O-desmethylvenlafaxine wherein the acid counter ion is provided by an acid selected from the group consisting of oxalic acid, benzoic acid and lactic acid.
    Type: Application
    Filed: October 21, 2008
    Publication date: February 24, 2011
    Applicant: ACTAVIS GROUP PTC EHF
    Inventors: Sonny Sebastian, Raman Buddhavarapu Pattabhi, Krishna Challa, Nitin Sharadchandra Pradhan, Jon Valgeirsson
  • O-desmethylvenlafaxine Cocrystals
    Publication number: 20090246284
    Abstract: Disclosed herein are co-crystals comprising O-desmethylvenlafaxine and succinic acid, process for the preparation, pharmaceutical compositions, and method of treating thereof.
    Type: Application
    Filed: March 31, 2009
    Publication date: October 1, 2009
    Applicant: ACTAVIS GROUP PTC EHF
    Inventors: Sonny Sebastian, Krishna Challa, Nitin Sharadchandra Pradhan, Jon Valgeirsson