Flowtec AG
16Patents
0Active
16Granted
30Portfolio score
Filing activity: Sep 20, 1978 → Feb 1, 1991
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4801897A | Arrangement for generating natural resonant oscillations of a mechanical oscillating system | Physics | 101 | Expired |
| US5052230A | Method and arrangement for flow rate measurement by means of ultrasonic waves | Physics | 92 | Expired |
| US4410926A | Arrangement for generating DC magnetic fields of alternating polarity for the magnetic-inductive flow measurement | Electricity | 71 | Expired |
| US4768384A | Mass flow meter operating by the Coriolis principle | Physics | 63 | Expired |
| US4793191A | Mass flow meter operating by the cariolis principle | Physics | 45 | Expired |
| US4743837A | Circuit for measuring capacitance by charging and discharging capacitor under test and its shield | Physics | 44 | Expired |
| US5131279A | Sensing element for an ultrasonic volumetric flowmeter | Physics | 36 | Expired |
| US4949583A | Method of mass flow measurement by the coriolis principle and mass flow meter operating by the coriolis principle | Physics | 34 | Expired |
| US4704908A | Method for compensating interference voltages in the electrode circuit in magnetic-inductive flow measurement | Physics | 20 | Expired |
| US4716770A | Vortex flow meter | Physics | 19 | Expired |
| US4932268A | Electromagnetic flow measuring arrangement | Physics | 16 | Expired |
| US4210022A | Method for the inductive measurement of fluid flow | Physics | 16 | Expired |
| US5020380A | Mass flow operating by the coriolis principle | Physics | 11 | Expired |
| US4422337A | Method of compensating the interference DC voltages in the electrode circuit in magnetic-conductive flow measurement | Physics | 9 | Expired |
| US4382387A | Method of compensating the interference DC voltages in the electrode circuit in magnetic-conductive flow measurement | Physics | 6 | Expired |
| US4922759A | Vortex frequency flow meter | Physics | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.