Endress+Hauser Inc.
172Patents
4Active
172Granted
43Portfolio score
Filing activity: Oct 6, 1975 → Dec 22, 2020 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6205855A | Device for monitoring a predetermined level in a container | Physics | 294 | Expired |
| US6088001A | Device for fastening an excitation element in a metal waveguide of an antenna and for electrically connecting the same to a coaxial line arranged outside the waveguide | Electricity | 222 | Expired |
| US5757104A | Method of operating an ultransonic piezoelectric transducer and circuit arrangement for performing the method | Electricity | 77 | Expired |
| US6389891B1 | Method and apparatus for establishing and/or monitoring the filling level of a medium in a container | Physics | 68 | Expired |
| US6216172A | Automatic can address allocation method | Electricity | 55 | Expired |
| US5792957A | Capacitive pressure sensors with high linearity by optimizing electrode boundaries | Physics | 46 | Expired |
| US5737963A | Ultrasonic transducer | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5755136A | Device for monitoring a predetermined level of a liquid in a container | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5836192A | Device for monitoring a predetermined level of a liquid in a container | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6122602A | Method and arrangement for electromagnetic wave distance measurement by the pulse transit time method | Physics | 39 | Expired |
| US5614911A | Radar-based method of level measurement | Physics | 37 | Expired |
| US5594449A | Tank-contents level measuring assembly | Physics | 36 | Expired |
| US5689265A | Device for measuring a level of material using microwaves | Physics | 34 | Expired |
| US6229476A | Liquid level meter | Physics | 33 | Expired |
| US5665921A | Gas tight pressure sensor sealed with flexible metallic adaptor and having ceramic sensor element | Physics | 33 | Expired |
| US6078280A | Periodic probe mapping | Physics | 32 | Expired |
| US4347741A | Control system for a capacitive level sensor | Physics | 31 | Expired |
| US6559657B1 | Probe mapping diagnostic methods | Physics | 31 | Expired |
| US5339687A | Flowmeter | Physics | 31 | Expired |
| US5664456A | Ultrasonic transducer | Physics | 30 | Expired |
| US5294756A | Conveyor belt scale apparatus | Physics | 28 | Expired |
| US5866815A | Fill-level indicator | Physics | 27 | Expired |
| US6415660B1 | Method and apparatus for the highly accurate determination of the filling level of a product in a container | Physics | 27 | Expired |
| US5661251A | Sensor apparatus for process measurement | Physics | 27 | Expired |
| US5659321A | Radar distance measuring device | Physics | 27 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.