Granted Patent
Utility
US 5,222,154 · App. 07/714,414
System and method for spot color extraction
Inventors:
James J. Graham, David W. Boyd
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jun 12, 1991
Inventors
James J. Graham
David W. Boyd
Assignee (at issue)
Hewlett-Packard Company, L.P.
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.