Granted Patent
Utility
US 5,346,622 · App. 08/026,385
Hydrocarbon class separation and quantitation by split column effluent analysis
Inventors:
Matthew S. Klee, Mu Zou Wang
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Mar 4, 1993
Inventors
Matthew S. Klee
Mu Zou Wang
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.