Granted Patent
Utility
US 4,579,596 · App. 06/667,335
In-situ removal of oily deposits from the interior surfaces of conduits
Inventor:
Patrick J. Murzyn
Patented Case
View Patent ↗
Granted: Apr 1, 1986
Filed: Nov 1, 1984
Inventor
Patrick J. Murzyn
Assignee (at issue)
Union Carbide 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.