Granted Patent
Utility
US 4,798,848 · App. 07/190,326
Hot-foamable, thermosetting epoxy resin mixture
Inventor:
Hermann Diethelm
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: May 5, 1988
Inventor
Hermann Diethelm
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.