Patents by Inventor Peter Snobl

Peter Snobl 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).

  • Inhibition of catalytically active impurities in polycarbonate by the melt transesterification process
    Patent number: 7250483
    Abstract: An improvement to the melt transesterification process for the preparation of polycarbonate is disclosed. The improvement entails adding to the process between its medium viscosity reactor and a high viscosity reactor at least one bridged ester of organic sulphur-containing acid.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: July 31, 2007
    Assignee: Bayer MaterialScience AG
    Inventors: Helmut-Werner Heuer, Melanie Möthrath, Peter Snobl, Lothar Bunzel, Thomas Pfingst, Marc Buts, Lydia Simon
  • Inhibition of catalytically active impurities in polycarbonate by the melt transesterification process
    Publication number: 20060004178
    Abstract: An improvement to the melt transesterification process for the preparation of polycarbonate is disclosed. The improvement entails adding to the process between its medium viscosity reactor and a high viscosity reactor at least one bridged ester of organic sulphur-containing acid.
    Type: Application
    Filed: June 28, 2005
    Publication date: January 5, 2006
    Inventors: Helmut-Werner Heuer, Melanie Mothrath, Peter Snobl, Lothar Bunzel, Thomas Pfingst, Marc Buts, Lydia Simon