Granted Patent
Utility
US 4,892,817 · App. 07/099,062
Stable phosphatase substrate composition
Inventor:
Jan Pawlak
Patented Case
View Patent ↗
Granted: Jan 9, 1990
Filed: Sep 21, 1987
Inventor
Jan Pawlak
Assignee (at issue)
BioGenex Laboratories, 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.