ENSCO, INC.
71Patents
32Active
71Granted
53Portfolio score
Filing activity: Apr 13, 1977 → Dec 7, 2023 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4450531A | Broadcast signal recognition system and method | Physics | 481 | Expired |
| US6525658B2 | Method and device for event detection utilizing data from a multiplicity of sensor sources | Physics | 191 | Expired |
| US6236709A | Continuous high speed tomographic imaging system and method | Physics | 189 | Expired |
| US6999021B2 | Method and apparatus for detecting, mapping and locating underground utilities | Physics | 150 | Expired |
| US6825793B2 | System and method for detecting and locating underground objects | Physics | 84 | Expired |
| US7755660B2 | Video inspection system for inspection of rail components and method thereof | Performing Operations; Transporting | 83 | Active |
| US6826478B2 | Inertial navigation system for mobile objects with constraints | Performing Operations; Transporting | 63 | Expired |
| US4198164A | Proximity sensor and method and apparatus for continuously measuring rail gauge | Physics | 60 | Expired |
| US5791063A | Automated track location identification using measured track data | Fixed Constructions | 58 | Expired |
| US4447123A | Fiber optic security system including a fiber optic seal and an electronic verifier | Emerging Cross-Sectional Technologies | 58 | Expired |
| US4297699A | Radar drill guidance system | Physics | 50 | Expired |
| US4602357A | Coded acoustic alarm transmitter/receiver system | Physics | 48 | Expired |
| US5452222A | Fast-risetime magnetically coupled current injector and methods for using same | Physics | 45 | Expired |
| US6405141B1 | Dynamic track stiffness measurement system and method | Physics | 45 | Expired |
| US6634112B2 | Method and apparatus for track geometry measurement | Physics | 41 | Expired |
| US4218678A | Synthetic pulse radar including a microprocessor based controller | Physics | 37 | Expired |
| US5233932A | Shredder/compactor auger system | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7334219B2 | Method and system for object level software testing | Physics | 25 | Expired |
| US4602245A | General purpose modular acoustic signal generator | Physics | 24 | Expired |
| US5022328A | Shredder/compactor auger system | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4415979A | Method and apparatus for detecting the presence of an animate body in an inanimate mobile structure | Physics | 22 | Expired |
| US6725782B1 | Railroad test vehicle comprising a railroad measurement axle suspension | Fixed Constructions | 21 | Expired |
| US4520741A | Waste disposal | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US8345099B2 | Optical path protection device and method for a railroad track inspection system | Physics | 20 | Active |
| US5036594A | Method and apparatus for gauging the corsslevel and warp of railroad tracks | Fixed Constructions | 20 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.