Granted Patent
Utility
US 5,804,022 · App. 08/914,297
Method for making 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: Sep 8, 1998
Filed: Aug 18, 1997
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.