Granted Patent
Utility
US 5,508,330 · App. 08/333,677
Barrier property enhancement of films and molded articles
Inventors:
Gregory R. Coughlin, Robert A. Falk
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Nov 3, 1994
Inventors
Gregory R. Coughlin
Robert A. Falk
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.