FD

Francis Demangeon

EF Elf France: 1 patents #8 of 33Top 25%
📍 Dardilly, FR: #2 of 3 inventorsTop 70%
Overall (1989): #115,038 of 140,708Top 85%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4879326 Cationic emulsions of bituminous binders of the type bitumen/polymer and cationic emulsifying system preferably utilizable for obtaining said emulsions Emile Lopez 1989-11-07