Granted Patent
Utility
US 5,260,220 · App. 07/794,278
Method and apparatus for monitoring impurities in a liquified hydrocarbon stream
Inventors:
W. Richard Dougherty, Donald J. Skahan
Patented Case
View Patent ↗
Granted: Nov 9, 1993
Filed: Nov 19, 1991
Inventors
W. Richard Dougherty
Donald J. Skahan
Assignee (at issue)
Arco Chemical Technology, L.P.
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.