Granted Patent
Utility
US 5,403,907 · App. 08/104,048
Prepolymers having imide groups
Inventors:
Daniel Beziers, Yves Camberlin, Evelyne Chataignier, Patrice Dourthe
Patented Case
View Patent ↗
Granted: Apr 4, 1995
Filed: Aug 11, 1993
Inventors
Daniel Beziers
Yves Camberlin
Evelyne Chataignier
Patrice Dourthe
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.