Granted Patent
Utility
US 6,260,492 · App. 09/171,012
Method and apparatus for burning fuel in the free board of a pressurized fluidized bed with solids recirculation
Inventors:
Christopher Adams, Jim Anderson, Mats Andersson, Roine Brannstrom, John Weatherby
Patented Case
View Patent ↗
Granted: Jul 17, 2001
Filed: Dec 22, 1998
Inventors
Christopher Adams
Jim Anderson
Mats Andersson
Roine Brannstrom
John Weatherby
Assignee (at issue)
ABB Carbon AB
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.