Patents by Inventor Christof AELLIG

Christof AELLIG 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).

  • Method for preparation of 5-fluoro-2-methyl-3-nitrobenzoic acid and its methyl ester
    Patent number: 11001552
    Abstract: The invention discloses a method for preparation of 5-fluoro-2-methyl-3-nitrobenzoic acid and its methyl ester by conversion of 5-fluoro-2-methylbenzoic acid with fuming nitric acid and oleum and subsequent conversion with methanol.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: May 11, 2021
    Assignee: LONZA LTD
    Inventors: Michael Bersier, Anna Kulesza, Paul Hanselmann, Christof Aellig, Sarah Filliger
  • METHOD FOR PREPARATION OF 5-FLUORO-2-METHYL-3-NITROBENZOIC ACID AND ITS METHYL ESTER
    Publication number: 20210078933
    Abstract: The invention discloses a method for preparation of 5-fluoro-2-methyl-3-nitrobenzoic acid and its methyl ester by conversion of 5-fluoro-2-methylbenzoic acid with fuming nitric acid and oleum and subsequent conversion with methanol.
    Type: Application
    Filed: July 16, 2018
    Publication date: March 18, 2021
    Inventors: Michael BERSIER, Anna KULESZA, Paul HANSELMANN, Christof AELLIG, Sarah FILLIGER