Granted Patent
Utility
US 6,793,777 · App. 10/009,507
Method for separating and purifying an aqueous mixture that mainly consists of acetic acid and formic acid
Inventors:
Christoph Rüdinger, Harald Voit, Michael Hallmann, Mehmet Gunaltay, Barbara Reil, Hans-Jurgen Eberle
Patented Case
View Patent ↗
Granted: Sep 21, 2004
Filed: Dec 5, 2001
Inventors
Christoph Rüdinger
Harald Voit
Michael Hallmann
Mehmet Gunaltay
Barbara Reil
Hans-Jurgen Eberle
Assignee (at issue)
Consortium für elektrochemische Industrie 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.