Granted Patent
Utility
US 4,487,948 · App. 06/477,993
Polyglycidyl hindered aromatic amines
Inventors:
David A. Shimp, Richard B. Graver
Patented Case
View Patent ↗
Granted: Dec 11, 1984
Filed: Mar 23, 1983
Inventors
David A. Shimp
Richard B. Graver
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.