Helmut Winnacker
14Patents
7h-index
12Co-inventors
63Inventor score
Filing activity: Oct 31, 1974 → Dec 9, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5182731A | Well bore data transmission apparatus | Fixed Constructions | 61 | Expired |
| US6636159B1 | Borehole logging apparatus for deep well drillings with a device for transmitting borehole measurement data | Fixed Constructions | 59 | Expired |
| US4745276A | Device for the detection of fluorescent substances on the surface of the earth | Physics | 27 | Expired |
| US6850463B2 | Borehole logging apparatus for deep well drilling | Fixed Constructions | 18 | Expired |
| US3939391A | Apparatus for charging a hermetically sealed electrical energy source | Electricity | 13 | Expired |
| US4153357A | Underwater camera | Physics | 11 | Expired |
| US8092147B2 | Turbine for power generation in a drill string | Emerging Cross-Sectional Technologies | 9 | Active |
| US4184758A | Deep sea underwater camera | Physics | 7 | Expired |
| US4035816A | Housing assembly for an underwater camera with a flash device | Physics | 6 | Expired |
| US8042572B2 | Controllable pressure-reducing valve and device for the generation of pressure change signals | Emerging Cross-Sectional Technologies | 4 | Active |
| US6864593B2 | Device for producing of electric energy and of signal transmitting pressure pulses | Electricity | 4 | Expired |
| US4580049A | Probe for locating mineral deposits | Physics | 2 | Expired |
| US8109721B2 | Bearing arrangement for a turbine rotor of a drill string turbine | Emerging Cross-Sectional Technologies | 1 | Active |
| US8585349B2 | Turbine for driving a generator in a drill string | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.