Patents by Inventor Ravi Naidu Rayapati

Ravi Naidu Rayapati 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).

  • Pharmaceutical process and intermediates 714
    Patent number: 8227622
    Abstract: The invention relates to compounds of formula (X), and salts thereof, and their use as intermediates in improved manufacturing processes for the synthesis of pharmaceutical compound (I): X is ?O, ?N—OH or ?N—OC(O)Me; Y is hydrogen, PhS- or p-chlorophenylsulfanyl; Z is hydrogen or —CH2COOR1 wherein R1 is selected from hydrogen, optionally substituted hydrocarbyl and optionally substituted heterocyclyl.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: July 24, 2012
    Assignee: AstraZeneca AB
    Inventors: Debra Ainge, Eric Merifield, Colin Thomson, Michael Butters, Ravi Ramakrishnan, Ravi Naidu Rayapati, Parhalad Ray Sharma
  • Pharmaceutical Process and Intermediates 714
    Publication number: 20110046394
    Abstract: The invention relates to compounds of formula (X), and salts thereof, and their use as intermediates in improved manufacturing processes for the synthesis of pharmaceutical compound (I): X is ?O, ?N—OH or ?N—OC(O)Me; Y is hydrogen, PhS- or p-chlorophenylsulfanyl; Z is hydrogen or —CH2COOR1 wherein R1 is selected from hydrogen, optionally substituted hydrocarbyl and optionally substituted heterocyclyl.
    Type: Application
    Filed: July 6, 2010
    Publication date: February 24, 2011
    Inventors: Debra Ainge, Eric Merifield, Colin Thomson, Michael Butters, Ravi Ramakrishnan, Ravi Naidu Rayapati, Parhalad Ray Sharma