Granted Patent
Utility
US 5,609,771 · App. 08/398,432
Method of separating red blood cells from a volume of blood
Inventor:
John P. Pelmulder
Patented Case
View Patent ↗
Granted: Mar 11, 1997
Filed: Mar 3, 1995
Inventor
John P. Pelmulder
Assignee (at issue)
International Remote Imaging Systems, 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.