Granted Patent
Utility
US 5,646,004 · App. 08/299,468
Methods for enriching fetal cells from maternal body fluids
Inventor:
Peter Van Vlasselaer
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Aug 31, 1994
Inventor
Peter Van Vlasselaer
Assignee (at issue)
Activated Cell Therapy, 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.