Granted Patent
Utility
US 5,625,081 · App. 08/181,284
Fluorescent dye intermediates
Inventor:
George L. Trainor
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Jan 13, 1994
Inventor
George L. Trainor
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.