Harald Grimmer
28Patents
10h-index
39Co-inventors
75Inventor score
Filing activity: Jan 5, 2001 → Jan 6, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9057247B2 | Measurement of downhole component stress and surface conditions | Fixed Constructions | 160 | Active |
| US6981561B2 | Downhole cutting mill | Fixed Constructions | 66 | Expired |
| US7174975B2 | Control systems and methods for active controlled bottomhole pressure systems | Fixed Constructions | 61 | Expired |
| US7806203B2 | Active controlled bottomhole pressure system and method with continuous circulation system | Fixed Constructions | 47 | Active |
| US7114581B2 | Active controlled bottomhole pressure system & method | Fixed Constructions | 44 | Expired |
| US7096975B2 | Modular design for downhole ECD-management devices and related methods | Fixed Constructions | 43 | Expired |
| US7721822B2 | Control systems and methods for real-time downhole pressure management (ECD control) | Fixed Constructions | 42 | Active |
| US7353887B2 | Control systems and methods for active controlled bottomhole pressure systems | Fixed Constructions | 32 | Expired |
| US8011450B2 | Active bottomhole pressure control with liner drilling and completion systems | Fixed Constructions | 22 | Active |
| US8888474B2 | Downhole motors and pumps with asymmetric lobes | Emerging Cross-Sectional Technologies | 18 | Active |
| US6907944B2 | Apparatus and method for minimizing wear and wear related measurement error in a logging-while-drilling tool | Physics | 10 | Expired |
| US6543540B2 | Method and apparatus for downhole production zone | Fixed Constructions | 10 | Expired |
| US9091264B2 | Apparatus and methods utilizing progressive cavity motors and pumps with rotors and/or stators with hybrid liners | Mechanical Engineering; Lighting; Heating | 8 | Active |
| US6957698B2 | Downhole activatable annular seal assembly | Fixed Constructions | 6 | Expired |
| US11421480B2 | Drilling apparatus using a sealed self-adjusting deflection device for drilling directional wells | Fixed Constructions | 3 | Active |
| US11459828B2 | Drilling apparatus using a self-adjusting deflection device and deflection sensors for drilling directional wells | Fixed Constructions | 2 | Active |
| US10920493B2 | Method of forming stators for downhole motors | Emerging Cross-Sectional Technologies | 1 | Active |
| US8800688B2 | Downhole motors with a lubricating unit for lubricating the stator and rotor | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US11428047B2 | Drilling assembly using a self-adjusting tilt device and sensors for drilling directional wellbores | Fixed Constructions | 1 | Active |
| US9080435B2 | Upgoing drainholes for reducing liquid-loading in gas wells | Fixed Constructions | 0 | Active |
| US10738600B2 | One run reservoir evaluation and stimulation while drilling | Physics | 0 | Active |
| US8925652B2 | Lateral well drilling apparatus and method | Fixed Constructions | 0 | Active |
| US8973676B2 | Active equivalent circulating density control with real-time data connection | Fixed Constructions | 0 | Active |
| US10385615B2 | Vibrationless moineau system | Fixed Constructions | 0 | Active |
| US11319753B2 | Method of forming stators for downhole motors | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.