Granted Patent
Utility
US 5,642,676 · App. 08/533,570
Ash control valve for a circulating fluidized bed combustor
Inventors:
Yoram Schaker, Joseph D. Dombrowski, Raymond C. Germain
Patented Case
View Patent ↗
Granted: Jul 1, 1997
Filed: Sep 25, 1995
Inventors
Yoram Schaker
Joseph D. Dombrowski
Raymond C. Germain
Assignee (at issue)
Combustion Engineering, Inc.
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.