Granted Patent
Utility
US 6,280,616 · App. 08/894,130
Column for chromatography
Inventor:
Conny Pettersson
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Aug 13, 1997
Inventor
Conny Pettersson
Assignee (at issue)
Pharmacia Biotech AB
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.