Patents by Inventor Ferdinand Fraunberger

Ferdinand Fraunberger 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 preparation of 3-cyano-4-aminoacetophenones
    Patent number: 4581177
    Abstract: A new process is disclosed for preparing 3-cyano-4-aminoacetophenone which, starting from 3-cyano-4-acetamidoacetophenone, enables this compound to be produced on an industrial scale in high yields.3-Cyano-4-aminoacetophenone is an intermediate product for the preparation of 2-amino-5-[1-hydroxy-2-(alkyl- or dialkyl-amino)ethyl]benzonitriles which show .beta..sub.2 -mimetic activities and may be used as feed additives.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: April 8, 1986
    Assignee: Dr. Karl Thomae GmbH
    Inventors: Wolfgang Resemann, Ferdinand Fraunberger