Granted Patent
Utility
US 4,284,833 · App. 05/862,242
Catalyst regeneration
Inventors:
Robert J. Blake, Guy W. Roy
Patented Case
View Patent ↗
Granted: Aug 18, 1981
Filed: Dec 19, 1977
Inventors
Robert J. Blake
Guy W. Roy
Assignee (at issue)
Stauffer Chemical Company
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.