Granted Patent
Utility
US 5,658,413 · App. 08/482,245
Miniaturized planar columns in novel support media for liquid phase analysis
Inventors:
Patrick Kaltenbach, Sally A. Swedberg, Klaus Witt, Fritz Bek, Laurie S. Mittelstadt
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Jun 7, 1995
Inventors
Patrick Kaltenbach
Sally A. Swedberg
Klaus Witt
Fritz Bek
Laurie S. Mittelstadt
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.