Patents by Inventor Peter Fahrni

Peter Fahrni 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).

  • Rearrangement process
    Patent number: 5041563
    Abstract: A process for the manufacture of ascorbic acid from 2-ketogulonic acid esters (KGAE) utilizing amine salts of the latter is disclosed.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: August 20, 1991
    Assignee: Hoffman-La Roche Inc.
    Inventors: Peter Fahrni, Theodor Siegfried