Patents by Inventor Robert E. Woodward

Robert E. Woodward 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 manufacture of enol derivatives
    Patent number: 4550162
    Abstract: The invention concerns a process for the manufacture of 7.beta.-amino-3-cephem-3-ol-4-carboxylic acid compounds by ring closure of esters of 2-[4-(substituted-thio)-3-acylamino-2-oxoazetidin-1-yl]-3-substituted-amin o-crotonic acids and solvolysing the enamine group in the resulting 7.beta.-acylamino-3-substituted-amino-cephem-4-carboxylic acid esters.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: October 29, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert E. Woodward, Hans Bickel