Kenneth E. Stephenson
52Patents
17h-index
52Co-inventors
87Inventor score
Filing activity: Apr 29, 1985 → Feb 12, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6755086B2 | Flow meter for multi-phase mixtures | Physics | 91 | Expired |
| US6253847A | Downhole power generation | Electricity | 78 | Expired |
| US6075611A | Methods and apparatus utilizing a derivative of a fluorescene signal for measuring the characteristics of a multiphase fluid flow in a hydrocarbon well | Physics | 62 | Expired |
| US6590647B2 | Physical property determination using surface enhanced raman emissions | Physics | 53 | Expired |
| US6016191A | Apparatus and tool using tracers and singles point optical probes for measuring characteristics of fluid flow in a hydrocarbon well and methods of processing resulting signals | Physics | 47 | Expired |
| US5680431A | X-ray generator | Electricity | 44 | Expired |
| US5689540A | X-ray water fraction meter | Physics | 44 | Expired |
| US5539225A | Accelerator-based methods and apparatus for measurement-while-drilling | Physics | 37 | Expired |
| US6776054B1 | Flow meter for multi-phase mixtures | Physics | 35 | Expired |
| US6612171B1 | Gravity measuring apparatus | Physics | 34 | Expired |
| US6490916B1 | Method and system of fluid analysis and control in a hydrocarbon well | Physics | 31 | Expired |
| US6216532A | Gas flow rate measurement | Physics | 28 | Expired |
| US7960687B1 | Sourceless downhole X-ray tool | Physics | 28 | Active |
| US5523939A | Borehole logging tool including a particle accelerator | Electricity | 21 | Expired |
| US6854341B2 | Flow characteristic measuring apparatus and method | Physics | 20 | Expired |
| US5543617A | Method of measuring flow velocities using tracer techniques | Physics | 19 | Expired |
| USRE36012E | Accelerator-based methods and apparatus for measurement-while-drilling | General | 19 | Expired |
| US5325284A | Electrostatic particle accelerator having linear axial and radial fields | Electricity | 17 | Expired |
| US5191517A | Electrostatic particle accelerator having linear axial and radial fields | Electricity | 16 | Expired |
| US6988547B2 | Method and system of fluid analysis and control in hydrocarbon well | Fixed Constructions | 16 | Expired |
| US7366615B2 | Methods and apparatus using both nuclear capture and inelastic spectroscopy in deriving elemental concentrations | Physics | 14 | Active |
| US5515259A | Inductively charged coaxial capacitor accelerator | Electricity | 10 | Expired |
| US5532482A | Method and apparatus for well logging using an accelerator neutron source | Physics | 10 | Expired |
| US8742328B2 | Logging-while-drilling tool incorporating electronic radiation generator and method for using same | Physics | 9 | Active |
| US8785841B1 | Scintillation detector package having radioactive window therein | Physics | 7 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.