Granted Patent
Utility
US 5,622,871 · App. 08/102,313
Capillary immunoassay and device therefor comprising mobilizable particulate labelled reagents
Inventors:
Keith May, Michael Evans Prior, Ian Richards
Patented Case
View Patent ↗
Granted: Apr 22, 1997
Filed: Jul 15, 1993
Inventors
Keith May
Michael Evans Prior
Ian Richards
Assignee (at issue)
Unilever Patent Holdings B.V.
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.