Granted Patent
Utility
US 5,280,367 · App. 07/705,838
Automatic separation of text from background in scanned images of complex documents
Inventor:
Oscar Zuniga
Patented Case
View Patent ↗
Granted: Jan 18, 1994
Filed: May 28, 1991
Inventor
Oscar Zuniga
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.