Patents by Inventor Edmund Dikow

Edmund Dikow 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).

  • Reactive rectification
    Patent number: 7071283
    Abstract: The invention relates to a method for producing polycarbonate according to the method for the transesterification of molten mass whereby bis-(hydroxyaryl) compounds (bisphenols) and diaryl carbonates are reacted by means of reactive rectification.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: July 4, 2006
    Assignee: Bayer MaterialScience AG
    Inventors: Gerald John, Edmund Dikow, Christine Mendoza-Frohn, Georg Ronge, Rolf Bachmann, Lutz Gottschalk, Michael Prein
  • Reactive rectification
    Publication number: 20040039151
    Abstract: The invention relates to a method for producing polycarbonate according to the method for the transesterification of molten mass whereby bis-(hydroxyaryl) compounds (bisphenols) and diaryl carbonates are reacted by means of reactive rectification.
    Type: Application
    Filed: June 30, 2003
    Publication date: February 26, 2004
    Inventors: Gerald John, Edmund Dikow, Christine Mendoza-Frohn, Georg Ronge, Rolf Bachmann, Lutz Gottschalk, Michael Prein
  • Reactive rectification
    Publication number: 20020099163
    Abstract: A process for producing polycarbonate is disclosed. Accordingly a pre-reaction mixture containing a bis(hydroxyaryl) compound and a diaryl carbonate is formed and introduced through the top of a reactive rectification column under condition calculated to bring about a reaction. The resulting hydroxyaryl is eliminated and diaryl carbonate in vapor form is introduced at the bottom of the reactive rectification column.
    Type: Application
    Filed: August 21, 2001
    Publication date: July 25, 2002
    Inventors: Gerald John, Edmund Dikow, Christine Mendoza-Frohn, Georg Ronge, Rolf Bachmann, Lutz Gottschalk, Michael Prein