Granted Patent
Utility
US 4,871,710 · App. 07/039,070
Agglomerate absorbents comprising copper and zinc for sulphur compounds removal
Inventors:
Patrick J. Denny, Peter Wood
Patented Case
View Patent ↗
Granted: Oct 3, 1989
Filed: Apr 16, 1987
Inventors
Patrick J. Denny
Peter Wood
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.