Granted Patent
Utility
US 4,581,337 · App. 06/511,751
Polyether polyamines as linking agents for particle reagents useful in immunoassays
Inventors:
William A. Frey, Donald M. Simons
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Jul 7, 1983
Inventors
William A. Frey
Donald M. Simons
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.