Granted Patent
Utility
US 5,690,899 · App. 08/687,742
Process for removing sulphur dioxide from flue gas
Inventors:
Navid Makkinejad, Mathias Kuper, Hildemar Bohm
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Jul 26, 1996
Inventors
Navid Makkinejad
Mathias Kuper
Hildemar Bohm
Assignee (at issue)
Lentjes Bischoff 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.