Granted Patent
Utility
US 5,659,110 · App. 08/375,634
Process of purifying combustion exhaust gases
Inventors:
Hansjoerg Herden, Gernot Mayer-Schwinning, Guenter Boening
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Jan 20, 1995
Inventors
Hansjoerg Herden
Gernot Mayer-Schwinning
Guenter Boening
Assignee (at issue)
Metallgesellschar Aktiengeselschaft
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.