Granted Patent
Utility
US 5,372,716 · App. 07/929,727
Supercritical fluid extraction coupled to analytical chromatography system
Inventors:
Joseph Levy, Raymond K. Houck
Patented Case
View Patent ↗
Granted: Dec 13, 1994
Filed: Aug 13, 1992
Inventors
Joseph Levy
Raymond K. Houck
Assignee (at issue)
Suprex 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.