Granted Patent
Utility
US 6,440,747 · App. 09/429,475
Stabilization of biological fluids by addition of sterol esters
Inventor:
Harald Althaus
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: Oct 29, 1999
Inventor
Harald Althaus
Assignee (at issue)
Dade Behring Marburg GmbH
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.