Granted Patent
Utility
US 6,512,131 · App. 09/694,405
Process for carrying out multi-phase reactions according to the counter current principle of a liquid and gaseous phase and apparatus for carrying out the process
Inventors:
Bernd Best, Karlheinz Brunner, Rainer Frische, Dirk Kilian, Joachim Seemann
Patented Case
View Patent ↗
Granted: Jan 28, 2003
Filed: Oct 22, 2000
Inventors
Bernd Best
Karlheinz Brunner
Rainer Frische
Dirk Kilian
Joachim Seemann
Assignee (at issue)
Dr. Frische 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.