Granted Patent
Utility
US 6,673,562 · App. 09/938,270
Differential immunoassay
Inventor:
Qinwei Shi
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Aug 23, 2001
Inventor
Qinwei Shi
Assignee (at issue)
Spectral Diagnostics, 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.