Granted Patent
Utility
US 5,168,552 · App. 07/784,498
Color separation in ink jet color graphics printing
Inventors:
Ronald J. Vaughn, John R. Matthews
Patented Case
View Patent ↗
Granted: Dec 1, 1992
Filed: Oct 29, 1991
Inventors
Ronald J. Vaughn
John R. Matthews
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.