Granted Patent
Utility
US 4,997,928 · App. 07/244,982
Fluorescent reagents for the preparation of 5'-tagged oligonucleotides
Inventor:
Frank W. Hobbs, Jr.
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: Sep 15, 1988
Inventor
Frank W. Hobbs, Jr.
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.