Granted Patent
Utility
US 5,374,694 · App. 08/055,392
Curable blends of cyanate esters and polyarylsulphones
Inventors:
Paul Mackenzie, Robin Maskell
Patented Case
View Patent ↗
Granted: Dec 20, 1994
Filed: May 3, 1993
Inventors
Paul Mackenzie
Robin Maskell
Assignee (at issue)
ICI Composites Inc.
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.