Granted Patent
Utility
US 5,215,042 · App. 07/645,379
Fluidized bed reactor
Inventors:
Hans Beisswenger, Rainer Reimer, Karel Vydra
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Jan 18, 1991
Inventors
Hans Beisswenger
Rainer Reimer
Karel Vydra
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.