Granted Patent
Utility
US 5,521,261 · App. 08/250,125
Epoxy resin mixtures containing advancement catalysts
Inventors:
Arnold Hofer, Hildegard Schneider, Nikolaus Siegenthaler
Patented Case
View Patent ↗
Granted: May 28, 1996
Filed: May 27, 1994
Inventors
Arnold Hofer
Hildegard Schneider
Nikolaus Siegenthaler
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.