Granted Patent
Utility
US 6,723,162 · App. 09/700,388
Concrete comprising organic fibres dispersed in a cement matrix, concrete cement matrix and premixes
Inventors:
Marcel Cheyrezy, Jerome Dugat, Sandra Boivin, Gilles Orange, Laurent Froin
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Mar 16, 2001
Inventors
Marcel Cheyrezy
Jerome Dugat
Sandra Boivin
Gilles Orange
Laurent Froin
Assignees (at issue)
Bouygues
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.