Granted Patent
Utility
US 5,424,373 · App. 08/268,091
Oligomeric cyanoguanidines hardeners for epoxy resins
Inventors:
Peter Flury, Martin Roth, Sameer H. Eldin
Patented Case
View Patent ↗
Granted: Jun 13, 1995
Filed: Jun 28, 1994
Inventors
Peter Flury
Martin Roth
Sameer H. Eldin
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.