Granted Patent
Utility
US 5,290,663 · App. 07/662,699
Photocurable polyurethane-acrylate ionomer compositions for aqueous developable printing plates
Inventor:
Truc-Chi Huynh-Tran
Patented Case
View Patent ↗
Granted: Mar 1, 1994
Filed: Mar 1, 1991
Inventor
Truc-Chi Huynh-Tran
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.