Granted Patent
Utility
US 6,287,461 · App. 09/397,457
Tandem system for adsorptive separation
Inventors:
Wolfgang Demmer, Dietmar Nussbaumer, Abdul Weiss
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Sep 16, 1999
Inventors
Wolfgang Demmer
Dietmar Nussbaumer
Abdul Weiss
Assignee (at issue)
Sartorius AG
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.