Granted Patent
Utility
US 5,312,549 · App. 08/017,122
Method and apparatus for extracting organic liquids from an organic liquid solute/solvent mixture
Inventors:
Darrell String, Arun Lakhani
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Feb 12, 1993
Inventors
Darrell String
Arun Lakhani
Assignee (at issue)
Clean Harbors, 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.