Granted Patent
Utility
US 5,736,036 · App. 08/381,294
Column for liquid chromatography
Inventors:
Paul E. Upchurch, Hans Schick
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Jan 31, 1995
Inventors
Paul E. Upchurch
Hans Schick
Assignee (at issue)
Upchurch Scientific, 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.