Patents by Inventor Hugo H.J.M. Liefooghe

Hugo H.J.M. Liefooghe 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 the thermal after-treatment of cleavage product from the acid-catalyzed cleavage of cumene hydroperoxide
    Patent number: 6555719
    Abstract: The cleavage product from the acid-catalyzed cleavage of cumene hydroperoxide into phenol and acetone is subjected to thermal after-treatment by a process, which comprises heating the cleavage product in a reactor, wherein the heat supplied for the thermal treatment is the heat generated by at least one exothermic reaction which occurs in the reactor. The exothermic reaction which proceeds in the cleavage product is preferably the cleavage of cumene hydroperoxide.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: April 29, 2003
    Assignee: Phenolchemie GmbH & Co. KG
    Inventors: Reinhard Sigg, Uwe Tanger, Manfred Weber, Otto Schnurr, Hugo H.J.M. Liefooghe