Granted Patent
Utility
US 4,889,808 · App. 07/907,004
Method of enchancing t-PA and SCU-PA production
Inventor:
Ruth Rappaport
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Sep 17, 1986
Inventor
Ruth Rappaport
Assignee (at issue)
Amerimas Home Products, 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.