Granted Patent
Utility
US 4,868,091 · App. 07/103,366
Photopolymerizable recording material, in particular for the production of printing plates and relief plates
Inventors:
Andreas Boettcher, Bernd Bronstert, Gerhard Hoffmann
Patented Case
View Patent ↗
Granted: Sep 19, 1989
Filed: Oct 1, 1987
Inventors
Andreas Boettcher
Bernd Bronstert
Gerhard Hoffmann
Assignee (at issue)
BASF SE
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.