KROHNE AG
160Patents
109Active
160Granted
52Portfolio score
Filing activity: Jul 18, 1990 → May 25, 2021 · 27 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6041665A | Mass flow meter which operates according to the coriolos principle | Physics | 56 | Expired |
| US7261001B2 | Magnetoinductive flowmeter and method for producing a magnetoinductive flowmeter | Physics | 37 | Expired |
| US5365794A | Mass flow meter | Physics | 32 | Expired |
| US6397685B1 | Mass flowmeter | Physics | 28 | Expired |
| US5987997A | Ultrasound flow measurement method | Physics | 23 | Expired |
| US7819020B2 | Integral flowmeter and valve assembly | Physics | 23 | Active |
| US5476013A | Mass flow meter | Physics | 22 | Expired |
| US6519828B1 | Method for mounting a metal body on the measuring tube of a coriolis mass flowmeter | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6400648B1 | Ultrasonic waveguide | Physics | 16 | Expired |
| US6170339A | Coriolis mass flowmeter | Physics | 15 | Expired |
| US5804742A | Mass flow meter | Physics | 14 | Expired |
| US6404288B1 | Time base generator | Electricity | 13 | Expired |
| US6516674B1 | Mass flow measuring instrument | Physics | 13 | Expired |
| US7647841B2 | Process for operation of a Coriolis mass flow rate measurement device | Physics | 13 | Active |
| US7971494B2 | Coriolis mass flowmeter having a reinforcing bridge between two end connection plates | Physics | 11 | Active |
| US7810399B2 | Ultrasonic flowmeter | Physics | 10 | Active |
| US8286502B2 | Electromagnet flowmeter having a measuring tube with a varying cross section | Physics | 10 | Active |
| US9134157B2 | Ultrasonic transducer | Physics | 9 | Active |
| US6557422B1 | Mass flow rate measuring device | Physics | 9 | Expired |
| US7963176B2 | Clamp-on ultrasonic flow rate measuring device having a guide frame for guiding the ultrasonic transducer | Human Necessities | 9 | Active |
| US7500402B2 | Ultrasonic flow rate measuring device | Human Necessities | 8 | Active |
| US6799475B2 | Flowmeter | Performing Operations; Transporting | 8 | Expired |
| US8286503B2 | Electromagnetic flowmeter having a measuring tube with varying cross section and wall thickness | Physics | 8 | Active |
| US5291792A | Mass flow meter | Physics | 8 | Expired |
| US6189389A | Ultrasonic flowmeter | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.