Granted Patent
Utility
US 4,366,143 · App. 06/189,942
Assay for the free portion of substances in biological fluids
Inventors:
John E. Midgley, Terence A. Wilkins
Patented Case
View Patent ↗
Granted: Dec 28, 1982
Filed: Sep 22, 1980
Inventors
John E. Midgley
Terence A. Wilkins
Assignee (at issue)
Amersham International Public Limited Company
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.