Granted Patent
Utility
US 5,094,741 · App. 07/525,964
Decoupled flow and pressure setpoints in an extraction instrument using compressible fluids
Inventors:
Lenore R. Frank, Christoper M. Wurm, Paul C. Dryden, Steven J. Engel, Mark Nickerson, Ernest H. Zerenner
Patented Case
View Patent ↗
Granted: Mar 10, 1992
Filed: May 18, 1990
Inventors
Lenore R. Frank
Christoper M. Wurm
Paul C. Dryden
Steven J. Engel
Mark Nickerson
Ernest H. Zerenner
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.