Granted Patent
Utility
US 6,640,752 · App. 10/383,931
Boiler and regenerative air preheater arrangement to enhance SO3 capture
Inventor:
Wayne S. Counterman
Patented Case
View Patent ↗
Granted: Nov 4, 2003
Filed: Mar 7, 2003
Inventor
Wayne S. Counterman
Assignee (at issue)
ALSTOM (Switzerland) Ltd
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.