Granted Patent
Utility
US 5,378,272 · App. 08/112,399
Uintaite-derived toners and printing inks
Inventors:
Enrique E. Romagosa, John F. Cooper, Michael Nuzzolo, Michael H. Lane
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Aug 26, 1993
Inventors
Enrique E. Romagosa
John F. Cooper
Michael Nuzzolo
Michael H. Lane
Assignee (at issue)
AMERICAN GILSONITE 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.