Granted Patent
Utility
US 4,894,431 · App. 07/197,479
Accelerated curing systems for epoxy resins
Inventors:
Robert F. Armbruster, Rajan Eadara, William L. Miller
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: May 23, 1988
Inventors
Robert F. Armbruster
Rajan Eadara
William L. Miller
Assignee (at issue)
Ciba-Geigy
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.