Granted Patent
Utility
US 6,093,447 · App. 08/910,577
Mordanting substrates and agents
Inventors:
Edward J. Johnson, Donald R. Allred
Patented Case
View Patent ↗
Granted: Jul 25, 2000
Filed: Jul 18, 1997
Inventors
Edward J. Johnson
Donald R. Allred
Assignee (at issue)
Iris Graphics, Inc.
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.