Granted Patent
Utility
US 6,673,329 · App. 09/885,983
Process for preparing fluorosulfonic acid having low contents of low-boiling compounds
Inventors:
Andreas Bulan, Michael Batz, Dieter Heinz, Kasper Hallenberger
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Jun 20, 2001
Inventors
Andreas Bulan
Michael Batz
Dieter Heinz
Kasper Hallenberger
Assignee (at issue)
Bayer Aktiengesellschaft
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.