Granted Patent
Utility
US 4,604,452 · App. 06/789,678
Metal carboxylate/alkylphenol curing catalyst for polycyanate esters of polyhydric phenols
Inventor:
David A. Shimp
Patented Case
View Patent ↗
Granted: Aug 5, 1986
Filed: Oct 21, 1985
Inventor
David A. Shimp
Assignee (at issue)
Celanese GmbH
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.