Granted Patent
Utility
US 4,490,273 · App. 06/552,568
Stable blends of N,N-diglycidyl amines and polyglycidyl ethers of polyhydric phenols
Inventor:
David A. Shimp
Patented Case
View Patent ↗
Granted: Dec 25, 1984
Filed: Nov 16, 1983
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.