Patents by Inventor Thad URQUHART

Thad URQUHART 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 de-polymerization of styrenic monomer-containing polymers and for retrieval of styrenic monomers
    Patent number: 11999686
    Abstract: The invention relates to an improved process for providing purified styrenic monomers, such as styrene, from styrene-containing polymer waste. Styrene-containing waste is depolymerized in a suitable reactor, and the depolymerization products are condensed and separated in a three-step distillation process.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: June 4, 2024
    Assignee: INEOS STYROLUTION GROUP GMBH
    Inventors: Norbert Niessner, Bianca Wilhelmus, Hannes Kerschbaumer, Michiel Verswyvel, Petra Inghelbrecht, Thomas W. Cochran, KyungHo Shon, Mohammed Abboud, Ricardo Cuetos, Hans-Dieter Schwaben, Jens Kathmann, Thad Urquhart, Timothy A. Brown, Tim Wong, Walter De Vet, Hans-Werner Schmidt, Andreas Schedl, Tristan Kolb
  • PROCESS FOR DE-POLYMERIZATION OF STYRENIC MONOMER-CONTAINING POLYMERS AND FOR RETRIEVAL OF STYRENIC MONOMERS
    Publication number: 20220081372
    Abstract: The invention relates to an improved process for providing purified styrenic monomers, such as styrene, from styrene-containing polymer waste. Styrene-containing waste is depolymerized in a suitable reactor, and the depolymerization products are condensed and separated in a three-step distillation process.
    Type: Application
    Filed: January 7, 2020
    Publication date: March 17, 2022
    Inventors: Norbert NIESSNER, Bianca WILHELMUS, Hannes KERSCHBAUMER, Michiel VERSWYVEL, Petra INGHELBRECHT, Thomas W. COCHRAN, KyungHo SHON, Mohammed ABBOUD, Ricardo CUETOS, Hans-Dieter SCHWABEN, Jens KATHMANN, Thad URQUHART, Timothy A. BROWN, Tim WONG, Walter DE VET, Hans-Werner SCHMIDT, Andreas SCHEDL, Tristan KOLB