Granted Patent
Utility
US 5,368,974 · App. 08/067,459
Lithographic printing plates having a hydrophilic barrier layer comprised of a copolymer of vinylphosphonic acid and acrylamide overlying an aluminum support
Inventors:
John E. Walls, Paul R. West
Patented Case
View Patent ↗
Granted: Nov 29, 1994
Filed: May 25, 1993
Inventors
John E. Walls
Paul R. West
Assignee (at issue)
EASTMAN KODAK COMPANY
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.