Granted Patent
Utility
US 6,481,385 · App. 09/701,124
Fluidized bed combustion system with steam generation
Inventors:
Peter Gummel, Werner-Friedrich Staab
Patented Case
View Patent ↗
Granted: Nov 19, 2002
Filed: Nov 17, 2000
Inventors
Peter Gummel
Werner-Friedrich Staab
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.