Granted Patent
Utility
US 5,637,675 · App. 08/433,205
Ferromagnetic crystalline compounds of copolymers of naphthylamine derivatives and aminoaromatic compounds
Inventors:
Alain Le Mehaute, Stanislas Galaj, Denis Cottevieille, François Tsobnang, François Lefort
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: May 2, 1995
Inventors
Alain Le Mehaute
Stanislas Galaj
Denis Cottevieille
François Tsobnang
François Lefort
Assignee (at issue)
Alcatel Alsthom Compagnie Generale d'Electricite
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.