LAFARGE CANADA INC.
21Patents
5Active
21Granted
37Portfolio score
Filing activity: Dec 9, 1991 → Sep 17, 2014 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6402833B1 | Binder for mine tailings | Emerging Cross-Sectional Technologies | 75 | Expired |
| US6755905B2 | Use of high carbon coal ash | Emerging Cross-Sectional Technologies | 72 | Expired |
| US5849075A | Cementitious composition containing bottom ash as pozzolan and concretes and mortars therefrom | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5223035A | Pozzolan blends | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5928420A | Cement composition for alkali-reactive aggregate and for sulphate resistance | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5837052A | Process for producing cement clinker containing coal ash | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5976243A | Process for producing cement clinker containing blast furnace slag | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5735947A | Cement with air-cooled slag and silica fume | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6783585B2 | Carbon removal through partial carbon burn-out from coal ash used in concrete | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5656766A | Underground drain tank | Physics | 10 | Expired |
| US7837412B2 | Binder for mine tailings, alluvial sand and the like | Emerging Cross-Sectional Technologies | 10 | Active |
| US6391105B1 | Enhancement of cement clinker yield | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6835244B2 | Use of organic carbon-containing minerals | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5650005A | Process for high free lime content in cement clinker | Chemistry; Metallurgy | 5 | Expired |
| US6764544B2 | Process for incorporating coal ash into cement clinker | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8863455B2 | Unitized precast grillage foundation and method for manufacturing the same | Fixed Constructions | 4 | Active |
| US5944861A | Process and apparatus for making expanded slag | Chemistry; Metallurgy | 2 | Expired |
| US9194095B2 | Unitized precast grillage foundation and method for manufacturing the same | Fixed Constructions | 2 | Active |
| US9231394B2 | Cementitious fibre reinforced composite cross arm | Electricity | 2 | Active |
| US8177908B2 | Binder for mine tailings, alluvial sand and the like | Emerging Cross-Sectional Technologies | 0 | Active |
| US7610801B2 | Flow device and method | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.