Granted Patent
Utility
US 5,116,508 · App. 07/483,870
Supercritical fluid extraction from liquids
Inventors:
M. Lalith Kumar, Joseph L. Hedrick
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Feb 23, 1990
Inventors
M. Lalith Kumar
Joseph L. Hedrick
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.