Patents by Inventor Matthias Marek

Matthias Marek 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
  • Purification of sulfuryl fluoride
    Patent number: 7014831
    Abstract: Sulfuryl fluoride, which is useful as a fumigant, may be contaminated with sulfur dioxide and possibly other impurities such as sulfuryl chloride, depending on the way it is produced. According to the invention, sulfur dioxide and, if applicable, sulfuryl chloride fluoride are removed from a contaminated sulfuryl fluoride product by using aluminum oxide as an adsorbing agent. The method of the invention is highly advantageous because it eliminates the need to use activated carbon as an additional adsorbent.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: March 21, 2006
    Assignee: Solway Fluor und Derivate GmbH
    Inventors: Johannes Eicher, Matthias Marek, Lore Hirsch