Granted Patent
Utility
US 5,932,095 · App. 08/609,345
Multi-chambered supercritical fluid extraction cartridge
Inventors:
Henry L. Walters, Dale Messer, Dale L. Clay, Robert W. Allington
Patented Case
View Patent ↗
Granted: Aug 3, 1999
Filed: Mar 1, 1996
Inventors
Henry L. Walters
Dale Messer
Dale L. Clay
Robert W. Allington
Assignee (at issue)
Isco, 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.