Dwyer Instruments, LLC
80Patents
31Active
80Granted
44Portfolio score
Filing activity: Dec 11, 1975 → May 19, 2023 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5183983A | Flow switch assembly for fluid flow monitoring | Electricity | 58 | Expired |
| US6089098A | Differential pressure switch having an isolated hall effect sensor | Electricity | 44 | Expired |
| US4725700A | Airflow switch for air ducts | Electricity | 31 | Expired |
| US4537068A | Thermal anemometer | Physics | 30 | Expired |
| USD287456S | Hexagonal installation key for a flow meter | General | 29 | Expired |
| US4347744A | Diaphragm type differential pressure gauge with overpressure relief protection | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4827095A | Differential pressure switch assembly with high static pressure use characteristics | Electricity | 23 | Expired |
| US4154101A | Air velocity gauge | Physics | 23 | Expired |
| US4030365A | Differential pressure gauge | Physics | 22 | Expired |
| US6905242B2 | Sensor temperature control in a thermal anemometer | Physics | 21 | Expired |
| US4385525A | Strain gauge pressure transducer | Physics | 19 | Expired |
| US5373746A | Flowmeter with snap fit mount end caps | Physics | 19 | Expired |
| US4841782A | Target fluid flow indicator gauge | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4559834A | Multipurpose flowmeter arrangement | Physics | 18 | Expired |
| US6981421B2 | Pressure gage and switch | Physics | 17 | Expired |
| US9395386B2 | Electronic tilt compensation for diaphragm based pressure sensors | Physics | 17 | Active |
| US6789434B2 | Fluid flowmeter having a hall effect sensor with an internal magnet | Physics | 17 | Expired |
| US4890497A | Differential pressure gauge transmitter | Physics | 15 | Expired |
| US4011759A | Differential pressure gauge | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4374475A | Differential pressure gauge | Physics | 14 | Expired |
| US4860583A | Air velocity transmitter device | Physics | 14 | Expired |
| US5061832A | Field settable differential pressure switch assembly for low fluid pressure applications | Electricity | 13 | Expired |
| USD514007S1 | Pressure gauge | General | 12 | Expired |
| US7073385B2 | Pressure sensor with a radially tensioned metal diaphragm | Physics | 12 | Expired |
| US7249517B2 | Pressure transmitter with power cycled hall effect sensor | Physics | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.