Granted Patent
Utility
US 6,175,049 · App. 09/375,896
Process for the production of 1, 2-butadiene
Inventors:
Arnd Stuwe, Jurgen Linnemann, Jens Herwig, Christian Gabel, Bernd Hohmann, Joachim Grub
Patented Case
View Patent ↗
Granted: Jan 16, 2001
Filed: Aug 17, 1999
Inventors
Arnd Stuwe
Jurgen Linnemann
Jens Herwig
Christian Gabel
Bernd Hohmann
Joachim Grub
Assignee (at issue)
EC Erdolchemie GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.