Granted Patent
Utility
US 4,444,880 · App. 06/402,452
Periodate removal of ascorbate interference in dipsticks for immunoassays
Inventor:
Henry Tom
Patented Case
View Patent ↗
Granted: Apr 24, 1984
Filed: Jul 27, 1982
Inventor
Henry Tom
Assignee (at issue)
Syva 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.