Granted Patent
Utility
US 5,866,721 · App. 08/885,043
Process for separating the product gas mixture from the catalytic synthesis of methyl mercaptan
Inventors:
Willi Hofen, Wolfgang Boeck, Stephan Rautenberg, Joerg Sauer, Dietrich Arntz, Ralf Goedecke, Wolfgang Taugner, Raymund Sonnenschein
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Jun 30, 1997
Inventors
Willi Hofen
Wolfgang Boeck
Stephan Rautenberg
Joerg Sauer
Dietrich Arntz
Ralf Goedecke
Wolfgang Taugner
Raymund Sonnenschein
Assignee (at issue)
Degussa AG
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.