PEI Company
7Patents
1Active
7Granted
30Portfolio score
Filing activity: Jun 10, 1976 → Dec 6, 2011
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4073351A | Burners for flame jet drill | Fixed Constructions | 85 | Expired |
| US4550945A | Truck bed closure | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4051909A | Turbine drill for drilling at great depths | Fixed Constructions | 10 | Expired |
| US8410439B2 | X-ray detector for electron microscope | Electricity | 8 | Active |
| US4066137A | Flame jet tool for drilling cross-holes | Fixed Constructions | 7 | Expired |
| US7150811B2 | Ion beam for target recovery | Electricity | 3 | Expired |
| US4099584A | Flame jet tool for drilling to great depths | Fixed Constructions | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.