Granted Patent
Utility
US 5,401,471 · App. 08/166,436
Fluidized bed reactor comprising a nozzle grate
Inventors:
Wolfgang Scheler, Jurgen Emmel, Wladyslaw Lewandowski
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Dec 14, 1993
Inventors
Wolfgang Scheler
Jurgen Emmel
Wladyslaw Lewandowski
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.