Granted Patent
Utility
US 6,383,380 · App. 09/592,306
Purification of biological substances
Inventor:
Henry B. Kopf
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: Jun 13, 2000
Inventor
Henry B. Kopf
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.