Patents by Inventor Jan Schostag

Jan Schostag 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).

  • Reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid
    Patent number: 11111201
    Abstract: The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: September 7, 2021
    Assignee: Solvay SA
    Inventors: Jean-Marie Blaude, Benoit Gosselin, Alain Lambert, Matthias Marek, Harald Krueger, Jan Schostag, Miriam Heyd
  • REDUCTION OF CONTENT OF CARBOXYLIC ACIDS AND DERIVATIVES THEREOF IN OLEUM, DISULFURIC ACID OR CONCENTRATED SULFURIC ACID
    Publication number: 20200223778
    Abstract: The present invention concerns a process for the reduction of content of carboxylic acids and derivatives thereof in oleum, disulfuric acid or concentrated sulfuric acid. The invention further concerns a process for the manufacture of carboxylic acid anhydrides comprising the process for the reduction of content of carboxylic acids and derivatives thereof from oleum, disulfuric acid or concentrated sulfuric acid.
    Type: Application
    Filed: April 25, 2018
    Publication date: July 16, 2020
    Inventors: Jean-Marie BLAUDE, Benoit GOSSELIN, Alain LAMBERT, Mathias MAREK, Harald KRUEGER, Jan Schostag, Miriam Heyd