Patents by Inventor Michael D. Groaning

Michael D. Groaning 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).

  • Derivatives of unsaturated, cyclic organic acids
    Patent number: 7473798
    Abstract: The present invention relates to technology for preparing derivatives of unsaturated, cyclic, organic acids and salts, thereof. Shikimic acid is an example of such an acid. More particularly, the present invention relates to preparing derivatives of these acids or salts thereof that are esterified, ketalized, functionalized with a leaving group, and/or provided with epoxide functionality. Preferred aspects may be used in the synthesis of Oseltamivir Phosphate starting from shikimic acid.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: January 6, 2009
    Assignee: Roche Palo Alto LLC
    Inventors: Richard A. Gabel, Michael D. Groaning, David A. Johnston