Granted Patent
Utility
US 5,728,503 · App. 08/566,759
Lithographic printing plates having specific grained and anodized aluminum substrate
Inventors:
Major S. Dhillon, Gerhard Sprintschnik, Jose G. Gonzales
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Dec 4, 1995
Inventors
Major S. Dhillon
Gerhard Sprintschnik
Jose G. Gonzales
Assignee (at issue)
Bayer Aktiengesellschaft
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.