Granted Patent
Utility
US 6,581,441 · App. 10/061,612
Capillary column chromatography process and system
Inventor:
Carlton H. Paul
Patented Case
View Patent ↗
Granted: Jun 24, 2003
Filed: Feb 1, 2002
Inventor
Carlton H. Paul
Assignee (at issue)
PerSeptive Biosystems 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.