HYDROMETER GMBH
16Patents
12Active
16Granted
43Portfolio score
Filing activity: Jun 17, 1982 → Jun 17, 2014 · 4 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8904881B2 | Ultrasound transducer assembly and ultrasound flowmeter | Electricity | 13 | Active |
| US6848303B2 | Water meter with a measuring insert, sealed towards the outside | Physics | 13 | Expired |
| US7698958B2 | Differential pressure means for a gas meter arrangement, comprising an improved flow geometry | Physics | 11 | Active |
| US8443842B2 | Flow straightener for a flowmeter, in particular an ultrasonic metering device | Physics | 8 | Active |
| US8424392B2 | Housing arrangement for ultrasound flow meter and ultrasound flow meter | Physics | 7 | Active |
| US7287437B2 | Flow meter for fluid or gas-like media | Physics | 7 | Expired |
| US5831158A | Combination water meter | Physics | 7 | Expired |
| US9032790B2 | Gas meter | Physics | 4 | Active |
| US7819021B2 | Fluid meter | Physics | 3 | Active |
| US7360447B2 | Flow meter having a reflector with spherical-concave surface | Physics | 3 | Active |
| US8516901B2 | Retrofit ultrasonic insertion type flow meter | Physics | 3 | Active |
| US8499648B2 | Gas meter | Emerging Cross-Sectional Technologies | 2 | Active |
| US4487217A | Reversing valve for combination meter | Emerging Cross-Sectional Technologies | 2 | Expired |
| US9784604B2 | Method for determining at least one gas parameter of a flowing gas | Physics | 1 | Active |
| US7366057B2 | Converter control with LC filtering | Physics | 1 | Active |
| US9719823B2 | Gas meter | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.