Granted Patent
Utility
US 6,743,928 · App. 09/913,280
Process for the manufacture of furfural
Inventor:
Karl J. Zeitsch
Patented Case
View Patent ↗
Granted: Jun 1, 2004
Filed: Mar 4, 2002
Inventor
Karl J. Zeitsch
Assignee (at issue)
International Furan Technology (Pty) Limited
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.