Granted Patent
Utility
US 4,284,494 · App. 05/901,346
Control of emissions in FCC regenerator flue gas
Inventors:
David B. Bartholic, John W. Byrne
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: May 1, 1978
Inventors
David B. Bartholic
John W. Byrne
Assignee (at issue)
Engelhard Minerals & Chemicals Corporation
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.