Dosco Overseas Engineering Ltd.
17Patents
0Active
17Granted
31Portfolio score
Filing activity: Sep 5, 1975 → Aug 9, 1993
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4838614A | Method of excavation and apparatus therefor | Fixed Constructions | 25 | Expired |
| US4755002A | Mining machine | Fixed Constructions | 25 | Expired |
| US4838615A | Apparatus for excavating a recess | Fixed Constructions | 22 | Expired |
| US5393937A | Vehicle control system | Physics | 14 | Expired |
| US4367144A | Fluid strainer or filter | Performing Operations; Transporting | 11 | Expired |
| US5332247A | Articulated joint | Performing Operations; Transporting | 10 | Expired |
| US5253727A | Steering mechanism for an articulated vehicle | Performing Operations; Transporting | 8 | Expired |
| US5387073A | Shuttlecar unloading device | Fixed Constructions | 6 | Expired |
| US4047762A | Gathering arms for a mining machine | Fixed Constructions | 6 | Expired |
| US5244072A | Articulation joint | Performing Operations; Transporting | 5 | Expired |
| US5301787A | Articulated shuttlecar | Performing Operations; Transporting | 4 | Expired |
| US4047761A | Mining machine | Fixed Constructions | 4 | Expired |
| US4746170A | Mining machinery | Fixed Constructions | 4 | Expired |
| US4106815A | Mining machines | Fixed Constructions | 3 | Expired |
| US5323666A | Transmission system with parallel input and concentric outputs | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4285546A | Tunnel profile control | Fixed Constructions | 3 | Expired |
| US5261617A | Cable reeler | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.