Granted Patent
Utility
US 5,223,375 · App. 07/729,976
Flexographic printing plate comprising photosensitive elastomer polymer composition
Inventors:
Arthur L. Berrier, Rustom Sam Kanga
Patented Case
View Patent ↗
Granted: Jun 29, 1993
Filed: Jul 15, 1991
Inventors
Arthur L. Berrier
Rustom Sam Kanga
Assignee (at issue)
W.R. Grace & Co. Conn.
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.