Patents by Inventor Ryan R. Huddleston

Ryan R. Huddleston 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 production of piperidine derivatives
    Patent number: 7235665
    Abstract: The present invention relates to processes for preparing certain piperidine derivatives, including fexofenadine (F), the active ingredient in the non-sedating antihistamine sold in the U.S. under the designation “Allegra®”. This invention also relates to novel synthetic intermediates useful in the processes of the present invention.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: June 26, 2007
    Assignee: Sanofi-Aventis Deutschland GmbH
    Inventors: Collin H. Schroeder, Ryan R. Huddleston, Richard H. Charles
  • Process for the production of piperidine derivatives
    Publication number: 20040198983
    Abstract: The present invention relates to processes for preparing certain piperidine derivatives, including fexofenadine (F), the active ingredient in the non-sedating antihistamine sold in the U.S. under the designation “Allegra®”. This invention also relates to novel synthetic intermediates useful in the processes of the present invention.
    Type: Application
    Filed: April 22, 2004
    Publication date: October 7, 2004
    Applicant: Aventis Pharma Deutschland GmbH
    Inventors: Collin H. Schroeder, Ryan R. Huddleston, Richard H. Charles