Granted Patent
Utility
US 4,857,607 · App. 07/195,312
Epoxidized polycycloacetals
Inventors:
Jacques-Alain Cotting, Alfred Renner
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: May 18, 1988
Inventors
Jacques-Alain Cotting
Alfred Renner
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.