Granted Patent
Utility
US 5,159,153 · App. 07/851,114
Emulsion that is compatible with reactive sulfide/pyrite ores
Inventors:
Don H. Cranney, Blake T. Maxfield
Patented Case
View Patent ↗
Granted: Oct 27, 1992
Filed: Mar 16, 1992
Inventors
Don H. Cranney
Blake T. Maxfield
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.