Granted Patent
Utility
US 5,194,496 · App. 07/774,515
Compositions of polyphenylene oxide or mixtures of polyphenylene oxide stabilized with compounds containing a triple acetylenic bond
Inventors:
Andrea Casarini, Giorgio D. Fortuna, Giovanni Zannotti
Patented Case
View Patent ↗
Granted: Mar 16, 1993
Filed: Oct 8, 1991
Inventors
Andrea Casarini
Giorgio D. Fortuna
Giovanni Zannotti
Assignee (at issue)
ECP Enichem Polimeri S.r.l.
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.