Granted Patent
Utility
US 5,425,850 · App. 08/148,242
CFB black liquor gasification system operating at low pressures
Inventors:
Michael C. Tanca, Erik Dahlquist, Sune Flink
Patented Case
View Patent ↗
Granted: Jun 20, 1995
Filed: Nov 8, 1993
Inventors
Michael C. Tanca
Erik Dahlquist
Sune Flink
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.