Douglas W. Grant
15Patents
6h-index
41Co-inventors
62Inventor score
Filing activity: Apr 29, 2003 → Dec 7, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7278480B2 | Apparatus and method for sensing downhole parameters | Fixed Constructions | 34 | Expired |
| US7140436B2 | Apparatus and method for controlling the pressure of fluid within a sample chamber | Fixed Constructions | 30 | Expired |
| US7683613B2 | High pressure/high temperature magnetic resonance tool | Physics | 21 | Active |
| US8910514B2 | Systems and methods of determining fluid properties | Fixed Constructions | 14 | Active |
| US7198105B2 | Apparatus and method for controlling the pressure of fluid within a sample chamber | Fixed Constructions | 12 | Expired |
| US7624794B2 | Non-conductive and non-magnetic flowline for electromagnetic measurements on reservoir fluids at high pressures | Physics | 7 | Active |
| US8586913B2 | Fluidic density measurements based on beta particles detection | Physics | 5 | Active |
| US8708049B2 | Downhole mixing device for mixing a first fluid with a second fluid | Fixed Constructions | 4 | Active |
| US9459330B2 | System and method for obtaining nuclear magnetic resonance measurements on reservoir fluids for prediction of fluid properties | Physics | 3 | Active |
| US8561698B2 | Downhole fluid injection | Fixed Constructions | 2 | Active |
| US8471560B2 | Measurements in non-invaded formations | Fixed Constructions | 2 | Active |
| US8807228B2 | Friction reduction mechanism for a downhole release assembly | Fixed Constructions | 2 | Active |
| US9097106B2 | Apparatus, method and system for measuring formation pressure and mobility | Fixed Constructions | 0 | Active |
| US10487652B2 | Downhole sampling tool with check valve piston | Fixed Constructions | 0 | Active |
| US10669847B2 | Double Rod Lock System | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.