Granted Patent
Utility
US 4,695,599 · App. 06/783,804
Use of dipiperidine-di-carbamates as stabilizers for synthetic polymers
Inventor:
Giuseppe Cantatore
Patented Case
View Patent ↗
Granted: Sep 22, 1987
Filed: Oct 4, 1985
Inventor
Giuseppe Cantatore
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.