Granted Patent
Utility
US 4,354,852 · App. 06/257,435
Phase separation of hydrocarbon liquids using liquid vortex
Inventor:
Paul H. Kydd
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Apr 24, 1981
Inventor
Paul H. Kydd
Assignee (at issue)
Hydrocarbon Research, 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.