Patents by Inventor Joseph Johannes Heijen

Joseph Johannes Heijen 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 preparing dicarboxylic acids employing fungal cells
    Patent number: 9624514
    Abstract: The present invention relates to a process for producing a dicarboxylic acid comprising fermenting a fungal cell in a vessel comprising a suitable fermentation medium, comprising adding a gas flow which comprises 20 to 35 v/v % of oxygen and less than 0.1 v/v % of carbon dioxide to the fermentation medium, and maintaining an average partial carbon dioxide pressure of at least about 0.35 bar in the fermentation medium, and producing the dicarboxylic acid.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: April 18, 2017
    Assignee: DSM IP ASSETS B.V.
    Inventors: Mickel Leonardus August Jansen, Joseph Johannes Heijen, René Verwaal