Granted Patent
Utility
US 6,478,867 · App. 09/555,378
Metal fibre concrete, cementitious matrix and pre-mixes for preparing matrix and concrete
Inventors:
Marcel Cheyrezy, Jerome Dugat, Bernard Clavaud, Gilles Orange, Laurent Frouin
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Jun 28, 2000
Inventors
Marcel Cheyrezy
Jerome Dugat
Bernard Clavaud
Gilles Orange
Laurent Frouin
Assignees (at issue)
BOUYGUES TRAVAUX PUBLICS
LAFARGE
RHODIA CHIMIE
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.