Granted Patent
Utility
US 5,809,181 · App. 08/678,947
Color conversion apparatus
Inventor:
James Robert Metcalfe
Patented Case
View Patent ↗
Granted: Sep 15, 1998
Filed: Jul 12, 1996
Inventor
James Robert Metcalfe
Assignees (at issue)
Canon Information Systems Research Australia Pty. Ltd.
CANON KABUSHIKI KAISHA
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.