Granted Patent
Utility
US 4,659,682 · App. 06/752,697
Recovery of noble metal values from carbonylation residues
Inventor:
Joseph Pugach
Patented Case
View Patent ↗
Granted: Apr 21, 1987
Filed: Jul 8, 1985
Inventor
Joseph Pugach
Assignee (at issue)
The Halcon SD Group, 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.