Granted Patent
Utility
US 5,993,765 · App. 08/980,716
Process for the dry desulfurization of a combustion gas
Inventors:
Hans Beisswenger, Bernhard Thone, Wolfram Klee
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Dec 1, 1997
Inventors
Hans Beisswenger
Bernhard Thone
Wolfram Klee
Assignee (at issue)
Metallgesellschaft 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.