Granted Patent
Utility
US 5,141,850 · App. 07/475,486
Porous strip form assay device method
Inventors:
Francis X. Cole, Eric C. Sigillo, Paul C. MacDonnell, Nancy J. Cicia
Patented Case
View Patent ↗
Granted: Aug 25, 1992
Filed: Feb 7, 1990
Inventors
Francis X. Cole
Eric C. Sigillo
Paul C. MacDonnell
Nancy J. Cicia
Assignee (at issue)
Hygeia Sciences, 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.